1 | <!DOCTYPE html> |
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2 | <html lang="es"> |
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3 | <head> |
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4 | <meta charset="UTF-8"> |
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5 | <title>Firma electrónica con Web Crypto API</title> |
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6 | <body> |
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7 | |
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8 | <main> |
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9 | <form enctype="multipart/form-data" method="post" id="firmar" name="SignFormat"> |
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10 | <h1>Firmar un PDF con un pkcs12 y Murachí REST</h1> |
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11 | <p>Seleccione el archivo que va a firmar electrónicamente</p> |
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12 | <input id="file-sign" class="file" type="file" data-min-file-count="1" name="upload" accept=".pdf" > |
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13 | <input id="inputCertificadoPKCS12" type="file" name="inputinputCertificadoPKCS12" /> |
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14 | <button type="button" name="buttonsubmit3" id="buttonsubmit3">Firmar</button> |
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15 | </form> |
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16 | <section id="resultados"> |
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17 | <div id="seccion1"></div> |
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18 | <div id="seccion2"></div> |
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19 | <div id="seccion3"></div> |
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20 | <div id="seccion4"></div> |
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21 | </section> |
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22 | </main> |
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23 | |
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24 | <!-- Forge 0.7.0 --> |
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25 | <script src="./forge.min.js"></script> |
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26 | <script src="./jquery.min.js"></script> |
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27 | <script> |
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28 | |
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29 | // Variables globales |
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30 | var |
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31 | reader = new FileReader(), |
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32 | certificado = "", |
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33 | password = "123456", |
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34 | inputCertificadoPKCS12 = document.querySelector("#inputCertificadoPKCS12"), |
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35 | buttonsubmit3 = document.querySelector("#buttonsubmit3"), |
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36 | decodificado = null, |
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37 | certP12bag = null, |
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38 | certificadoHexadecimal = null, |
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39 | privateKeyRSASSAPKCS1v1_5 = null, |
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40 | privateKeyRSAPSS = null, |
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41 | publicKeyRSAPSS = null, |
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42 | importarLlave = null; |
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43 | |
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44 | |
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45 | |
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46 | /* ----- Funciones ----- */ |
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47 | // Función para convertir el certificado de ArrayBuffer a String |
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48 | function convertirArrayBufferAString ( buffer ) { |
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49 | let _certificadoEnString = ''; |
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50 | let _bytes = new Uint8Array( buffer ); |
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51 | let _longitudDeCadena = _bytes.byteLength; |
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52 | for (let i = 0; i < _longitudDeCadena; i++) { |
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53 | _certificadoEnString += String.fromCharCode( _bytes[ i ] ); |
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54 | } |
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55 | return _certificadoEnString; |
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56 | } |
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57 | |
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58 | // Función para convertir el certificado de String a ArrayBuffer |
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59 | function convertirStringArrayBuffer ( data ) { |
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60 | let _arrayBuffer = new ArrayBuffer ( data.length ); |
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61 | let writer = new Uint8Array ( _arrayBuffer ); |
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62 | for (let i = 0, len = data.length; i < len; i++) { |
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63 | writer[i] = data.charCodeAt ( i ); |
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64 | } |
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65 | return _arrayBuffer; |
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66 | } |
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67 | |
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68 | // Función para decodificar el .p12 convertido en string |
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69 | function decodificarPKCS12 ( stringBase64 ) { |
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70 | let pkcs12Asn1 = forge.asn1.fromDer( stringBase64 ); |
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71 | let pkcs12 = forge.pkcs12.pkcs12FromAsn1( pkcs12Asn1, false, password ); |
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72 | return pkcs12; |
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73 | } |
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74 | |
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75 | // Función para buscar la llave publica del PKCS#12 |
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76 | function buscarLlavePublica ( pkcs12 ) { |
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77 | for ( var sci = 0; sci < pkcs12.safeContents.length; ++sci ) { |
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78 | var safeContents = pkcs12.safeContents[ sci ]; |
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79 | |
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80 | for ( var sbi = 0; sbi < safeContents.safeBags.length; ++sbi ) { |
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81 | var safeBag = safeContents.safeBags[sbi]; |
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82 | if (safeBag.cert != undefined) { |
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83 | console.log("antes de llamar safeBag.cert.publicKey") |
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84 | var publicKey = safeBag.cert.publicKey; |
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85 | console.log("**** publickey ****"); |
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86 | console.log(publicKey); |
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87 | console.log("**** publickey ****"); |
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88 | var publickeyPem = forge.pki.publicKeyToPem(publicKey); |
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89 | console.log("**** publickeyPem ****"); |
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90 | console.log(publickeyPem); |
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91 | console.log("**** publickeyPem ****"); |
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92 | var publickeyBytesHex = forge.util.bytesToHex(publickeyPem); |
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93 | console.log("**** publickeyBytesHex ****"); |
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94 | console.log(publickeyBytesHex); |
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95 | console.log("**** publickeyBytesHex ****"); |
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96 | return publicKey; |
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97 | } |
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98 | } |
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99 | } |
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100 | } |
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101 | |
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102 | // Función para buscar la llave privada del PKCS#12 |
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103 | function buscarLlavePrivada ( pkcs12 ) { |
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104 | for ( var sci = 0; sci < pkcs12.safeContents.length; ++sci ) { |
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105 | var safeContents = pkcs12.safeContents[ sci ]; |
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106 | |
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107 | for ( var sbi = 0; sbi < safeContents.safeBags.length; ++sbi ) { |
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108 | var safeBag = safeContents.safeBags[sbi]; |
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109 | //if (safeBag.cert != undefined) { |
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110 | //console.log("antes de llamar safeBag.cert.publicKey") |
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111 | //var publicKey = safeBag.cert.publicKey; |
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112 | //console.log("**** publickey ****"); |
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113 | //console.log(publicKey); |
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114 | //console.log("**** publickey ****"); |
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115 | //} |
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116 | |
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117 | if ( safeBag.type === forge.pki.oids.keyBag ) { |
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118 | privateKey = safeBag.key; |
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119 | } else if ( safeBag.type === forge.pki.oids.pkcs8ShroudedKeyBag ) { |
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120 | privateKey = safeBag.key; |
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121 | } |
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122 | } |
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123 | } |
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124 | return privateKey; |
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125 | } |
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126 | //var rsaPublicKey = pki.publicKeyToAsn1(publicKey); |
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127 | |
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128 | // Función para convertir la llave publica a PKCS#8 |
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129 | function publicKeyToPkcs8 ( publicKeyP12 ) { |
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130 | var rsaPublicKey = forge.pki.publicKeyToAsn1(publicKeyP12); |
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131 | //var publicKeyInfo = forge.pki.wrapRsaPrivateKey(rsaPublicKey); |
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132 | var publicKeyInfoDer = forge.asn1.toDer(rsaPublicKey).getBytes(); |
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133 | var publicKeyInfoDerBuff = convertirStringArrayBuffer(publicKeyInfoDer); |
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134 | return publicKeyInfoDerBuff; |
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135 | } |
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136 | |
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137 | // Función para convertir la llave privada a PKCS#8 |
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138 | function privateKeyToPkcs8 ( privateKeyP12 ) { |
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139 | console.log("function privateKeyToPkcs8 ( privateKeyP12 ) {"); |
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140 | console.log(privateKeyP12); |
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141 | console.log("function privateKeyToPkcs8 ( privateKeyP12 ) {"); |
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142 | var rsaPrivateKey = forge.pki.privateKeyToAsn1(privateKeyP12); |
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143 | var privateKeyInfo = forge.pki.wrapRsaPrivateKey(rsaPrivateKey); |
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144 | var privateKeyInfoDer = forge.asn1.toDer(privateKeyInfo).getBytes(); |
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145 | var privateKeyInfoDerBuff = convertirStringArrayBuffer(privateKeyInfoDer); |
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146 | return privateKeyInfoDerBuff; |
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147 | } |
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148 | |
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149 | // Función para convertir un Array Buffer a Hexadecimal |
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150 | function buf2hex ( buffer ) { |
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151 | return Array.prototype.map.call(new Uint8Array(buffer), x => ('00' + x.toString(16)).slice(-2)).join(''); |
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152 | } |
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153 | |
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154 | // Función para importar la llave privada with RSASSA-PKCS1-v1_5 |
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155 | /* |
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156 | function importarLlavePrivada ( llavePrivada ) { |
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157 | var qweasd = crypto.subtle.importKey( |
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158 | "pkcs8", //can be "jwk" (public or private), "spki" (public only), or "pkcs8" (private only) |
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159 | llavePrivada, |
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160 | { //these are the algorithm options |
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161 | name: "RSASSA-PKCS1-v1_5", |
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162 | hash: { name: "SHA-256" }, //can be "SHA-1", "SHA-256", "SHA-384", or "SHA-512" |
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163 | }, |
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164 | false, //whether the key is extractable (i.e. can be used in exportKey) |
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165 | ["sign"] //"verify" for public key import, "sign" for private key imports |
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166 | ).then(function(publicKey){ |
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167 | //returns a publicKey (or privateKey if you are importing a private key) |
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168 | console.log(publicKey); |
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169 | privateKeyRSASSAPKCS1v1_5 = publicKey; |
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170 | }) |
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171 | .catch(function(err){ |
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172 | console.error(err); |
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173 | }); |
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174 | } |
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175 | |
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176 | |
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177 | */ |
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178 | // Función para importar la llave privada with RSA-PSS |
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179 | function importarLlavePrivada ( llavePrivada ) { |
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180 | console.log("Clave privada"); |
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181 | console.log(llavePrivada); |
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182 | console.log("Clave privada"); |
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183 | var qweasd = crypto.subtle.importKey( |
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184 | "pkcs8", //can be "jwk" (public or private), "spki" (public only), or "pkcs8" (private only) |
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185 | llavePrivada, |
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186 | { //these are the algorithm options |
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187 | name: "RSA-PSS", |
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188 | hash: { name: "SHA-256" }, //can be "SHA-1", "SHA-256", "SHA-384", or "SHA-512" |
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189 | }, |
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190 | false, //whether the key is extractable (i.e. can be used in exportKey) |
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191 | ["sign"] //"verify" for public key import, "sign" for private key imports |
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192 | ).then(function(publicKey){ |
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193 | //returns a publicKey (or privateKey if you are importing a private key) |
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194 | console.log(publicKey); |
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195 | privateKeyRSAPSS = publicKey; |
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196 | }) |
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197 | .catch(function(err){ |
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198 | console.error(err); |
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199 | }); |
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200 | } |
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201 | |
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202 | // Función para importar la llave publica with RSA-PSS |
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203 | function importarLlavePublica ( llavePublica ) { |
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204 | console.log("importarLlavePublica llavePublica"); |
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205 | console.log(llavePublica); |
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206 | console.log("importarLlavePublica llavePublica"); |
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207 | var qweasd = crypto.subtle.importKey( |
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208 | "spki", //can be "jwk" (public or private), "spki" (public only), or "pkcs8" (private only) |
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209 | llavePublica, |
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210 | { //these are the algorithm options |
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211 | name: "RSA-PSS", |
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212 | hash: { name: "SHA-256" }, //can be "SHA-1", "SHA-256", "SHA-384", or "SHA-512" |
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213 | }, |
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214 | false, //whether the key is extractable (i.e. can be used in exportKey) |
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215 | ["verify"] //"verify" for public key import, "sign" for private key imports |
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216 | ).then(function(publicKey){ |
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217 | //returns a publicKey (or privateKey if you are importing a private key)} |
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218 | console.log("llavePublica importada"); |
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219 | console.log(publicKey); |
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220 | console.log("llavePublica importada"); |
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221 | publicKeyRSAPSS = publicKey; |
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222 | }) |
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223 | .catch(function(err){ |
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224 | console.error(err); |
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225 | }); |
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226 | } |
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227 | // Función para convertir el certificado .p12 en hexadecimal |
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228 | function convertirPKCS12aHexadecimal ( pkcs12 ) { |
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229 | for ( var sci = 0; sci < pkcs12.safeContents.length; ++sci ) { |
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230 | var safeContents = pkcs12.safeContents[sci]; |
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231 | for(var sbi = 0; sbi < safeContents.safeBags.length; ++sbi) { |
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232 | var safeBag = safeContents.safeBags[sbi]; |
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233 | if(safeBag.type === forge.pki.oids.keyBag) { |
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234 | privateKey = safeBag.key; |
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235 | } else if(safeBag.type === forge.pki.oids.pkcs8ShroudedKeyBag) { |
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236 | privateKey = safeBag.key; |
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237 | } else if(safeBag.type === forge.pki.oids.certBag) { |
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238 | if(certP12bag == null) { |
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239 | certP12bag = safeBag.cert; |
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240 | var certpem = forge.pki.certificateToPem(certP12bag); |
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241 | var certBytesHex = forge.util.bytesToHex(certpem); |
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242 | } |
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243 | } |
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244 | } |
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245 | } |
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246 | return certBytesHex; |
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247 | } |
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248 | |
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249 | |
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250 | // Función para leer el .p12 luego de cargarlo |
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251 | function leerCertificadoPKCS12 () { |
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252 | let archivoAdjuntado = this.files[0]; |
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253 | |
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254 | reader.onload = function(e) { |
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255 | var |
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256 | contents = e.target.result, |
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257 | pkcs12Der = convertirArrayBufferAString( contents ), |
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258 | pkcs12B64 = forge.util.encode64( pkcs12Der ); |
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259 | decodificado = decodificarPKCS12( pkcs12Der ); |
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260 | certificadoHexadecimal = convertirPKCS12aHexadecimal(decodificado); |
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261 | var |
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262 | llavePrivada = buscarLlavePrivada(decodificado), |
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263 | llavePublica = buscarLlavePublica(decodificado), |
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264 | convertirAPKCS8 = privateKeyToPkcs8(llavePrivada), |
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265 | convertirAPuKCS8 = publicKeyToPkcs8(llavePublica); |
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266 | |
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267 | importarLlavePrivada(convertirAPKCS8); |
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268 | importarLlavePublica(convertirAPuKCS8); |
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269 | } |
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270 | reader.readAsArrayBuffer(archivoAdjuntado); |
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271 | } |
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272 | |
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273 | /* ----- Eventos ----- */ |
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274 | // 1. Al adjuntar el archivo .p12 se ejecuta la función que lo lee y se extrae su información |
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275 | inputCertificadoPKCS12.addEventListener('change', leerCertificadoPKCS12, false); |
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276 | /* ----- Eventos ----- */ |
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277 | |
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278 | |
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279 | |
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280 | |
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281 | function convertStringToArrayBufferView(str) |
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282 | { |
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283 | var bytes = new Uint8Array(str.length); |
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284 | for (var iii = 0; iii < str.length; iii++) |
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285 | { |
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286 | bytes[iii] = str.charCodeAt(iii); |
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287 | } |
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288 | |
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289 | return bytes; |
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290 | } |
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291 | |
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292 | var crypto = window.crypto || window.msCrypto; |
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293 | |
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294 | var promise_key = null; |
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295 | |
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296 | var private_key_object = null; |
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297 | var public_key_object = null; |
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298 | |
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299 | //var data = "QNimate"; |
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300 | var data = "7a42eea172776c7a6de6d57aa9958d9654410934f5cfbf483b6135a24543f51c"; |
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301 | |
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302 | var encrypted_hash = null; |
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303 | var encrypt_promise = null; |
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304 | |
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305 | var signature = null; |
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306 | |
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307 | var decrypt_promise = null; |
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308 | |
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309 | // Usando el algoritmo RSA-PSS |
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310 | |
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311 | if(crypto.subtle) |
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312 | { |
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313 | console.log("Antes del alert"); |
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314 | alert("Cryptography API Supported"); |
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315 | |
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316 | promise_key = crypto.subtle.generateKey({name: "RSA-PSS", modulusLength: 2048, publicExponent: new Uint8Array([0x01, 0x00, 0x01]), hash: {name: "SHA-256"}}, false, ["sign", "verify"]); |
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317 | |
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318 | promise_key.then(function(key){ |
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319 | private_key_object = key.privateKey; |
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320 | console.log("******// public_key_object //******"); |
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321 | console.log(public_key_object); |
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322 | console.log("******// public_key_object //******"); |
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323 | public_key_object = key.publicKey; |
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324 | console.log("****.. antes del encrypt_data()..****"); |
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325 | encrypt_data(); |
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326 | }); |
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327 | |
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328 | promise_key.catch = function(e){ |
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329 | |
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330 | console.log(e.message); |
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331 | } |
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332 | |
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333 | |
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334 | } |
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335 | else |
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336 | { |
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337 | alert("Cryptography API not Supported"); |
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338 | } |
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339 | |
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340 | function encrypt_data() |
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341 | { |
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342 | console.log("function encrypt_data()"); |
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343 | console.log("*** inicio private_key_object ***"); |
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344 | console.log(private_key_object); |
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345 | console.log("*** fin private_key_object ***"); |
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346 | console.log("*** inicio privatekey ***"); |
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347 | console.log(privateKeyRSAPSS); |
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348 | console.log("*** fin privatekey ***"); |
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349 | |
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350 | if(privateKeyRSAPSS==null) { |
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351 | encrypt_promise = crypto.subtle.sign({name: "RSA-PSS", saltLength: 128, }, private_key_object, convertStringToArrayBufferView(data)); |
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352 | |
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353 | encrypt_promise.then( |
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354 | function(result_signature){ |
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355 | signature = result_signature; //signature generated |
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356 | console.log("**************************************"); |
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357 | console.log(signature); |
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358 | console.log("**************************************"); |
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359 | console.log("****.. antes del decrypt_data()..****"); |
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360 | decrypt_data(); |
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361 | }, |
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362 | function(e){ |
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363 | console.log(e); |
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364 | } |
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365 | ); |
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366 | } |
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367 | else { |
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368 | |
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369 | encrypt_promise = crypto.subtle.sign({name: "RSA-PSS", saltLength: 128, }, privateKeyRSAPSS, convertStringToArrayBufferView(data)); |
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370 | |
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371 | encrypt_promise.then( |
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372 | function(result_signature){ |
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373 | signature = result_signature; //signature generated |
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374 | console.log("**************************************"); |
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375 | console.log(signature); |
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376 | console.log("**************************************"); |
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377 | console.log("****.. antes del decrypt_data()..****"); |
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378 | decrypt_data(); |
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379 | }, |
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380 | function(e){ |
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381 | console.log(e); |
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382 | } |
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383 | ); |
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384 | } |
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385 | } |
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386 | |
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387 | function decrypt_data() |
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388 | { |
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389 | if(publicKeyRSAPSS == null) { |
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390 | console.log("function decrypt_data()"); |
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391 | console.log("******// public_key_object decrypt_data() //******"); |
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392 | console.log(public_key_object); |
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393 | console.log("******// public_key_object decrypt_data() //******"); |
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394 | decrypt_promise = crypto.subtle.verify({name: "RSA-PSS", saltLength: 128, }, public_key_object, signature, convertStringToArrayBufferView(data)); |
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395 | |
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396 | decrypt_promise.then( |
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397 | function(result){ |
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398 | console.log(result);//true or false |
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399 | }, |
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400 | function(e){ |
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401 | console.log(e.message); |
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402 | } |
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403 | ); |
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404 | } |
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405 | else { |
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406 | console.log("function decrypt_data()"); |
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407 | console.log("******// publicKeyRSAPSS decrypt_data() //******"); |
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408 | console.log(publicKeyRSAPSS); |
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409 | console.log("******// publicKeyRSAPSS decrypt_data() //******"); |
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410 | decrypt_promise = crypto.subtle.verify({name: "RSA-PSS", saltLength: 128, }, publicKeyRSAPSS, signature, convertStringToArrayBufferView(data)); |
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411 | decrypt_promise.then( |
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412 | function(result){ |
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413 | console.log(result);//true or false |
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414 | }, |
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415 | function(e){ |
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416 | console.log(e.message); |
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417 | } |
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418 | ); |
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419 | |
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420 | } |
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421 | |
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422 | } |
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423 | /* |
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424 | // Usando el algoritmo RSASSA-PKCS1-v1_5 |
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425 | if(crypto.subtle) |
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426 | { |
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427 | console.log("Antes del alert"); |
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428 | alert("Cryptography API Supported"); |
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429 | |
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430 | promise_key = crypto.subtle.generateKey({name: "RSASSA-PKCS1-v1_5", modulusLength: 2048, publicExponent: new Uint8Array([1, 0, 1]), hash: {name: "SHA-256"}}, false, ["sign", "verify"]); |
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431 | |
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432 | promise_key.then(function(key){ |
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433 | private_key_object = key.privateKey; |
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434 | public_key_object = key.publicKey; |
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435 | console.log("****.. antes del encrypt_data()..****"); |
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436 | encrypt_data(); |
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437 | }); |
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438 | |
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439 | promise_key.catch = function(e){ |
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440 | |
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441 | console.log(e.message); |
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442 | } |
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443 | } |
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444 | else |
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445 | { |
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446 | alert("Cryptography API not Supported"); |
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447 | } |
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448 | |
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449 | function encrypt_data() |
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450 | { |
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451 | console.log("function encrypt_data()"); |
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452 | //encrypt_promise = crypto.subtle.sign({name: "RSASSA-PKCS1-v1_5"}, private_key_object, convertStringToArrayBufferView(data)); |
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453 | console.log("*** inicio private_key_object ***"); |
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454 | console.log(private_key_object); |
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455 | console.log("*** fin private_key_object ***"); |
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456 | console.log("*** inicio privatekey ***"); |
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457 | console.log(privateKeyRSASSAPKCS1v1_5); |
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458 | console.log("*** fin privatekey ***"); |
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459 | |
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460 | if(privateKeyRSASSAPKCS1v1_5 == null) { |
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461 | encrypt_promise = crypto.subtle.sign({name: "RSASSA-PKCS1-v1_5"}, private_key_object, convertStringToArrayBufferView(data)); |
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462 | |
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463 | encrypt_promise.then( |
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464 | function(result_signature){ |
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465 | signature = result_signature; //signature generated |
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466 | console.log("**************************************"); |
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467 | console.log(signature); |
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468 | console.log("**************************************"); |
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469 | console.log("****.. antes del decrypt_data()..****"); |
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470 | decrypt_data(); |
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471 | }, |
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472 | function(e){ |
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473 | console.log(e); |
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474 | } |
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475 | ); |
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476 | } else { |
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477 | console.log("privateKey != Null"); |
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478 | encrypt_promise = crypto.subtle.sign({name: "RSASSA-PKCS1-v1_5"}, privateKeyRSASSAPKCS1v1_5, convertStringToArrayBufferView(data)); |
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479 | |
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480 | encrypt_promise.then( |
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481 | function(result_signature){ |
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482 | signature = result_signature; //signature generated |
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483 | console.log("**************************************"); |
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484 | console.log(signature); |
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485 | console.log("**************************************"); |
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486 | console.log("****.. antes del decrypt_data()..****"); |
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487 | decrypt_data(); |
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488 | }, |
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489 | function(e){ |
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490 | console.log(e); |
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491 | } |
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492 | ); |
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493 | } |
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494 | } |
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495 | |
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496 | function decrypt_data() |
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497 | { |
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498 | console.log("function decrypt_data()"); |
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499 | decrypt_promise = crypto.subtle.verify({name: "RSASSA-PKCS1-v1_5"}, public_key_object, signature, convertStringToArrayBufferView(data)); |
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500 | |
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501 | decrypt_promise.then( |
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502 | function(result){ |
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503 | console.log(result);//true or false |
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504 | }, |
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505 | function(e){ |
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506 | console.log(e.message); |
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507 | } |
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508 | ); |
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509 | } |
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510 | */ |
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511 | |
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512 | buttonsubmit3.addEventListener('click', function() { |
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513 | encrypt_data(); |
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514 | }, true); |
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515 | |
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516 | </script> |
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517 | </body> |
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518 | </html> |
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