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stdbWeb/jwt/pkcs5pkey-1.0.js

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/*! pkcs5pkey-1.0.6.js (c) 2013-2014 Kenji Urushima | kjur.github.com/jsrsasign/license
*/
/*
* pkcs5pkey.js - reading passcode protected PKCS#5 PEM formatted RSA private key
*
* Copyright (c) 2013-2014 Kenji Urushima (kenji.urushima@gmail.com)
*
* This software is licensed under the terms of the MIT License.
* http://kjur.github.com/jsrsasign/license
*
* The above copyright and license notice shall be
* included in all copies or substantial portions of the Software.
*/
/**
* @fileOverview
* @name pkcs5pkey-1.0.js
* @author Kenji Urushima kenji.urushima@gmail.com
* @version pkcs5pkey 1.0.6 (2014-Apr-16)
* @since jsrsasign 2.0.0
* @license <a href="http://kjur.github.io/jsrsasign/license/">MIT License</a>
*/
/**
* @name PKCS5PKEY
* @class class for PKCS#5 and PKCS#8 private key
* @deprecated Since jsrsasign 4.1.3. Please use KEYUTIL class.
* @description
* <br/>
* {@link PKCS5PKEY} class has following features:
* <ul>
* <li>read and parse PEM formatted encrypted PKCS#5 private key
* <li>generate PEM formatted encrypted PKCS#5 private key
* <li>read and parse PEM formatted plain PKCS#8 private key
* <li>read and parse PEM formatted encrypted PKCS#8 private key by PBKDF2/HmacSHA1/3DES
* </ul>
* Currently supports only RSA private key and
* following symmetric key algorithms to protect private key.
* <ul>
* <li>DES-EDE3-CBC</li>
* <li>AES-256-CBC</li>
* <li>AES-192-CBC</li>
* <li>AES-128-CBC</li>
* </ul>
*
* <h5>METHOD SUMMARY</h5>
* <dl>
* <dt><b>PKCS8 PRIVATE KEY METHODS</b><dd>
* <ul>
* <li>{@link PKCS5PKEY.getRSAKeyFromPlainPKCS8PEM} - convert plain PKCS8 PEM to RSAKey object</li>
* <li>{@link PKCS5PKEY.getRSAKeyFromPlainPKCS8Hex} - convert plain PKCS8 hexadecimal data to RSAKey object</li>
* <li>{@link PKCS5PKEY.getRSAKeyFromEncryptedPKCS8PEM} - convert encrypted PKCS8 PEM to RSAKey object</li>
* <li>{@link PKCS5PKEY.getPlainPKCS8HexFromEncryptedPKCS8PEM} - convert encrypted PKCS8 PEM to plain PKCS8 Hex</li>
* </ul>
* <dt><b>PKCS5 PRIVATE KEY METHODS</b><dd>
* <ul>
* <li>{@link PKCS5PKEY.getRSAKeyFromEncryptedPKCS5PEM} - convert encrypted PKCS5 PEM to RSAKey object</li>
* <li>{@link PKCS5PKEY.getEncryptedPKCS5PEMFromRSAKey} - convert RSAKey object to encryped PKCS5 PEM</li>
* <li>{@link PKCS5PKEY.newEncryptedPKCS5PEM} - generate RSAKey and its encrypted PKCS5 PEM</li>
* </ul>
* <dt><b>PKCS8 PUBLIC KEY METHODS</b><dd>
* <ul>
* <li>{@link PKCS5PKEY.getKeyFromPublicPKCS8PEM} - convert encrypted PKCS8 PEM to RSAKey/ECDSA object</li>
* <li>{@link PKCS5PKEY.getKeyFromPublicPKCS8Hex} - convert encrypted PKCS8 Hex to RSAKey/ECDSA object</li>
* <li>{@link PKCS5PKEY.getRSAKeyFromPublicPKCS8PEM} - convert encrypted PKCS8 PEM to RSAKey object</li>
* <li>{@link PKCS5PKEY.getRSAKeyFromPublicPKCS8Hex} - convert encrypted PKCS8 Hex to RSAKey object</li>
* </ul>
* <dt><b>UTITILIY METHODS</b><dd>
* <ul>
* <li>{@link PKCS5PKEY.getHexFromPEM} - convert PEM string to hexadecimal data</li>
* <li>{@link PKCS5PKEY.getDecryptedKeyHexByKeyIV} - decrypt key by sharedKey and IV</li>
* </ul>
* </dl>
*
* @example
* Here is an example of PEM formatted encrypted PKCS#5 private key.
* -----BEGIN RSA PRIVATE KEY-----
* Proc-Type: 4,ENCRYPTED
* DEK-Info: AES-256-CBC,40555967F759530864FE022E257DE34E
*
* jV7uXajRw4cccDaliagcqiLOiQEUCe19l761pXRxzgQP+DH4rCi12T4puTdZyy6l
* ...(snip)...
* qxLS+BASmyGm4DME6m+kltZ12LXwPgNU6+d+XQ4NXSA=
*-----END RSA PRIVATE KEY-----
*/
var PKCS5PKEY = function() {
// *****************************************************************
// *** PRIVATE PROPERTIES AND METHODS *******************************
// *****************************************************************
// shared key decryption ------------------------------------------
var decryptAES = function(dataHex, keyHex, ivHex) {
return decryptGeneral(CryptoJS.AES, dataHex, keyHex, ivHex);
};
var decrypt3DES = function(dataHex, keyHex, ivHex) {
return decryptGeneral(CryptoJS.TripleDES, dataHex, keyHex, ivHex);
};
var decryptGeneral = function(f, dataHex, keyHex, ivHex) {
var data = CryptoJS.enc.Hex.parse(dataHex);
var key = CryptoJS.enc.Hex.parse(keyHex);
var iv = CryptoJS.enc.Hex.parse(ivHex);
var encrypted = {};
encrypted.key = key;
encrypted.iv = iv;
encrypted.ciphertext = data;
var decrypted = f.decrypt(encrypted, key, { iv: iv });
return CryptoJS.enc.Hex.stringify(decrypted);
};
// shared key decryption ------------------------------------------
var encryptAES = function(dataHex, keyHex, ivHex) {
return encryptGeneral(CryptoJS.AES, dataHex, keyHex, ivHex);
};
var encrypt3DES = function(dataHex, keyHex, ivHex) {
return encryptGeneral(CryptoJS.TripleDES, dataHex, keyHex, ivHex);
};
var encryptGeneral = function(f, dataHex, keyHex, ivHex) {
var data = CryptoJS.enc.Hex.parse(dataHex);
var key = CryptoJS.enc.Hex.parse(keyHex);
var iv = CryptoJS.enc.Hex.parse(ivHex);
var msg = {};
var encryptedHex = f.encrypt(data, key, { iv: iv });
var encryptedWA = CryptoJS.enc.Hex.parse(encryptedHex.toString());
var encryptedB64 = CryptoJS.enc.Base64.stringify(encryptedWA);
return encryptedB64;
};
// other methods and properties ----------------------------------------
var ALGLIST = {
'AES-256-CBC': { 'proc': decryptAES, 'eproc': encryptAES, keylen: 32, ivlen: 16 },
'AES-192-CBC': { 'proc': decryptAES, 'eproc': encryptAES, keylen: 24, ivlen: 16 },
'AES-128-CBC': { 'proc': decryptAES, 'eproc': encryptAES, keylen: 16, ivlen: 16 },
'DES-EDE3-CBC': { 'proc': decrypt3DES, 'eproc': encrypt3DES, keylen: 24, ivlen: 8 }
};
var getFuncByName = function(algName) {
return ALGLIST[algName]['proc'];
};
var _generateIvSaltHex = function(numBytes) {
var wa = CryptoJS.lib.WordArray.random(numBytes);
var hex = CryptoJS.enc.Hex.stringify(wa);
return hex;
};
var _parsePKCS5PEM = function(sPKCS5PEM) {
var info = {};
if (sPKCS5PEM.match(new RegExp("DEK-Info: ([^,]+),([0-9A-Fa-f]+)", "m"))) {
info.cipher = RegExp.$1;
info.ivsalt = RegExp.$2;
}
if (sPKCS5PEM.match(new RegExp("-----BEGIN ([A-Z]+) PRIVATE KEY-----"))) {
info.type = RegExp.$1;
}
var i1 = -1;
var lenNEWLINE = 0;
if (sPKCS5PEM.indexOf("\r\n\r\n") != -1) {
i1 = sPKCS5PEM.indexOf("\r\n\r\n");
lenNEWLINE = 2;
}
if (sPKCS5PEM.indexOf("\n\n") != -1) {
i1 = sPKCS5PEM.indexOf("\n\n");
lenNEWLINE = 1;
}
var i2 = sPKCS5PEM.indexOf("-----END");
if (i1 != -1 && i2 != -1) {
var s = sPKCS5PEM.substring(i1 + lenNEWLINE * 2, i2 - lenNEWLINE);
s = s.replace(/\s+/g, '');
info.data = s;
}
return info;
};
var _getKeyAndUnusedIvByPasscodeAndIvsalt = function(algName, passcode, ivsaltHex) {
//alert("ivsaltHex(2) = " + ivsaltHex);
var saltHex = ivsaltHex.substring(0, 16);
//alert("salt = " + saltHex);
var salt = CryptoJS.enc.Hex.parse(saltHex);
var data = CryptoJS.enc.Utf8.parse(passcode);
//alert("salt = " + salt);
//alert("data = " + data);
var nRequiredBytes = ALGLIST[algName]['keylen'] + ALGLIST[algName]['ivlen'];
var hHexValueJoined = '';
var hLastValue = null;
//alert("nRequiredBytes = " + nRequiredBytes);
for (;;) {
var h = CryptoJS.algo.MD5.create();
if (hLastValue != null) {
h.update(hLastValue);
}
h.update(data);
h.update(salt);
hLastValue = h.finalize();
hHexValueJoined = hHexValueJoined + CryptoJS.enc.Hex.stringify(hLastValue);
//alert("joined = " + hHexValueJoined);
if (hHexValueJoined.length >= nRequiredBytes * 2) {
break;
}
}
var result = {};
result.keyhex = hHexValueJoined.substr(0, ALGLIST[algName]['keylen'] * 2);
result.ivhex = hHexValueJoined.substr(ALGLIST[algName]['keylen'] * 2, ALGLIST[algName]['ivlen'] * 2);
return result;
};
/*
* @param {String} privateKeyB64 base64 string of encrypted private key
* @param {String} sharedKeyAlgName algorithm name of shared key encryption
* @param {String} sharedKeyHex hexadecimal string of shared key to encrypt
* @param {String} ivsaltHex hexadecimal string of IV and salt
* @param {String} hexadecimal string of decrypted private key
*/
var _decryptKeyB64 = function(privateKeyB64, sharedKeyAlgName, sharedKeyHex, ivsaltHex) {
var privateKeyWA = CryptoJS.enc.Base64.parse(privateKeyB64);
var privateKeyHex = CryptoJS.enc.Hex.stringify(privateKeyWA);
var f = ALGLIST[sharedKeyAlgName]['proc'];
var decryptedKeyHex = f(privateKeyHex, sharedKeyHex, ivsaltHex);
return decryptedKeyHex;
};
/*
* @param {String} privateKeyHex hexadecimal string of private key
* @param {String} sharedKeyAlgName algorithm name of shared key encryption
* @param {String} sharedKeyHex hexadecimal string of shared key to encrypt
* @param {String} ivsaltHex hexadecimal string of IV and salt
* @param {String} base64 string of encrypted private key
*/
var _encryptKeyHex = function(privateKeyHex, sharedKeyAlgName, sharedKeyHex, ivsaltHex) {
var f = ALGLIST[sharedKeyAlgName]['eproc'];
var encryptedKeyB64 = f(privateKeyHex, sharedKeyHex, ivsaltHex);
return encryptedKeyB64;
};
// *****************************************************************
// *** PUBLIC PROPERTIES AND METHODS *******************************
// *****************************************************************
return {
// -- UTILITY METHODS ------------------------------------------
/**
* decrypt private key by shared key
* @name version
* @memberOf PKCS5PKEY
* @property {String} version
* @description version string of PKCS5PKEY class
*/
version: "1.0.5",
/**
* get hexacedimal string of PEM format
* @name getHexFromPEM
* @memberOf PKCS5PKEY
* @function
* @param {String} sPEM PEM formatted string
* @param {String} sHead PEM header string without BEGIN/END
* @return {String} hexadecimal string data of PEM contents
* @since pkcs5pkey 1.0.5
*/
getHexFromPEM: function(sPEM, sHead) {
var s = sPEM;
if (s.indexOf("BEGIN " + sHead) == -1) {
throw "can't find PEM header: " + sHead;
}
s = s.replace("-----BEGIN " + sHead + "-----", "");
s = s.replace("-----END " + sHead + "-----", "");
var sB64 = s.replace(/\s+/g, '');
var dataHex = b64tohex(sB64);
return dataHex;
},
/**
* decrypt private key by shared key
* @name getDecryptedKeyHexByKeyIV
* @memberOf PKCS5PKEY
* @function
* @param {String} encryptedKeyHex hexadecimal string of encrypted private key
* @param {String} algName name of symmetric key algorithm (ex. 'DES-EBE3-CBC')
* @param {String} sharedKeyHex hexadecimal string of symmetric key
* @param {String} ivHex hexadecimal string of initial vector(IV).
* @return {String} hexadecimal string of decrypted privated key
*/
getDecryptedKeyHexByKeyIV: function(encryptedKeyHex, algName, sharedKeyHex, ivHex) {
var f1 = getFuncByName(algName);
return f1(encryptedKeyHex, sharedKeyHex, ivHex);
},
/**
* parse PEM formatted passcode protected PKCS#5 private key
* @name parsePKCS5PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} sEncryptedPEM PEM formatted protected passcode protected PKCS#5 private key
* @return {Hash} hash of key information
* @description
* Resulted hash has following attributes.
* <ul>
* <li>cipher - symmetric key algorithm name (ex. 'DES-EBE3-CBC', 'AES-256-CBC')</li>
* <li>ivsalt - IV used for decrypt. Its heading 8 bytes will be used for passcode salt.</li>
* <li>type - asymmetric key algorithm name of private key described in PEM header.</li>
* <li>data - base64 encoded encrypted private key.</li>
* </ul>
*
*/
parsePKCS5PEM: function(sPKCS5PEM) {
return _parsePKCS5PEM(sPKCS5PEM);
},
/**
* the same function as OpenSSL EVP_BytsToKey to generate shared key and IV
* @name getKeyAndUnusedIvByPasscodeAndIvsalt
* @memberOf PKCS5PKEY
* @function
* @param {String} algName name of symmetric key algorithm (ex. 'DES-EBE3-CBC')
* @param {String} passcode passcode to decrypt private key (ex. 'password')
* @param {String} hexadecimal string of IV. heading 8 bytes will be used for passcode salt
* @return {Hash} hash of key and unused IV (ex. {keyhex:2fe3..., ivhex:3fad..})
*/
getKeyAndUnusedIvByPasscodeAndIvsalt: function(algName, passcode, ivsaltHex) {
return _getKeyAndUnusedIvByPasscodeAndIvsalt(algName, passcode, ivsaltHex);
},
decryptKeyB64: function(privateKeyB64, sharedKeyAlgName, sharedKeyHex, ivsaltHex) {
return _decryptKeyB64(privateKeyB64, sharedKeyAlgName, sharedKeyHex, ivsaltHex);
},
/**
* decrypt PEM formatted protected PKCS#5 private key with passcode
* @name getDecryptedKeyHex
* @memberOf PKCS5PKEY
* @function
* @param {String} sEncryptedPEM PEM formatted protected passcode protected PKCS#5 private key
* @param {String} passcode passcode to decrypt private key (ex. 'password')
* @return {String} hexadecimal string of decrypted RSA priavte key
*/
getDecryptedKeyHex: function(sEncryptedPEM, passcode) {
// 1. parse pem
var info = _parsePKCS5PEM(sEncryptedPEM);
var publicKeyAlgName = info.type;
var sharedKeyAlgName = info.cipher;
var ivsaltHex = info.ivsalt;
var privateKeyB64 = info.data;
//alert("ivsaltHex = " + ivsaltHex);
// 2. generate shared key
var sharedKeyInfo = _getKeyAndUnusedIvByPasscodeAndIvsalt(sharedKeyAlgName, passcode, ivsaltHex);
var sharedKeyHex = sharedKeyInfo.keyhex;
//alert("sharedKeyHex = " + sharedKeyHex);
// 3. decrypt private key
var decryptedKey = _decryptKeyB64(privateKeyB64, sharedKeyAlgName, sharedKeyHex, ivsaltHex);
return decryptedKey;
},
/**
* read PEM formatted encrypted PKCS#5 private key and returns RSAKey object
* @name getRSAKeyFromEncryptedPKCS5PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} sEncryptedP5PEM PEM formatted encrypted PKCS#5 private key
* @param {String} passcode passcode to decrypt private key
* @return {RSAKey} loaded RSAKey object of RSA private key
* @since pkcs5pkey 1.0.2
*/
getRSAKeyFromEncryptedPKCS5PEM: function(sEncryptedP5PEM, passcode) {
var hPKey = this.getDecryptedKeyHex(sEncryptedP5PEM, passcode);
var rsaKey = new RSAKey();
rsaKey.readPrivateKeyFromASN1HexString(hPKey);
return rsaKey;
},
/**
* get PEM formatted encrypted PKCS#5 private key from hexadecimal string of plain private key
* @name getEryptedPKCS5PEMFromPrvKeyHex
* @memberOf PKCS5PKEY
* @function
* @param {String} hPrvKey hexadecimal string of plain private key
* @param {String} passcode pass code to protect private key (ex. password)
* @param {String} sharedKeyAlgName algorithm name to protect private key (ex. AES-256-CBC)
* @param {String} ivsaltHex hexadecimal string of IV and salt
* @return {String} string of PEM formatted encrypted PKCS#5 private key
* @since pkcs5pkey 1.0.2
* @description
* <br/>
* generate PEM formatted encrypted PKCS#5 private key by hexadecimal string encoded
* ASN.1 object of plain RSA private key.
* Following arguments can be omitted.
* <ul>
* <li>alg - AES-256-CBC will be used if omitted.</li>
* <li>ivsaltHex - automatically generate IV and salt which length depends on algorithm</li>
* </ul>
* @example
* var pem =
* PKCS5PKEY.getEryptedPKCS5PEMFromPrvKeyHex(plainKeyHex, "password");
* var pem2 =
* PKCS5PKEY.getEryptedPKCS5PEMFromPrvKeyHex(plainKeyHex, "password", "AES-128-CBC");
* var pem3 =
* PKCS5PKEY.getEryptedPKCS5PEMFromPrvKeyHex(plainKeyHex, "password", "AES-128-CBC", "1f3d02...");
*/
getEryptedPKCS5PEMFromPrvKeyHex: function(hPrvKey, passcode, sharedKeyAlgName, ivsaltHex) {
var sPEM = "";
// 1. set sharedKeyAlgName if undefined (default AES-256-CBC)
if (typeof sharedKeyAlgName == "undefined" || sharedKeyAlgName == null) {
sharedKeyAlgName = "AES-256-CBC";
}
if (typeof ALGLIST[sharedKeyAlgName] == "undefined")
throw "PKCS5PKEY unsupported algorithm: " + sharedKeyAlgName;
// 2. set ivsaltHex if undefined
if (typeof ivsaltHex == "undefined" || ivsaltHex == null) {
var ivlen = ALGLIST[sharedKeyAlgName]['ivlen'];
var randIV = _generateIvSaltHex(ivlen);
ivsaltHex = randIV.toUpperCase();
}
// 3. get shared key
//alert("ivsalthex=" + ivsaltHex);
var sharedKeyInfo = _getKeyAndUnusedIvByPasscodeAndIvsalt(sharedKeyAlgName, passcode, ivsaltHex);
var sharedKeyHex = sharedKeyInfo.keyhex;
// alert("sharedKeyHex = " + sharedKeyHex);
// 3. get encrypted Key in Base64
var encryptedKeyB64 = _encryptKeyHex(hPrvKey, sharedKeyAlgName, sharedKeyHex, ivsaltHex);
var pemBody = encryptedKeyB64.replace(/(.{64})/g, "$1\r\n");
var sPEM = "-----BEGIN RSA PRIVATE KEY-----\r\n";
sPEM += "Proc-Type: 4,ENCRYPTED\r\n";
sPEM += "DEK-Info: " + sharedKeyAlgName + "," + ivsaltHex + "\r\n";
sPEM += "\r\n";
sPEM += pemBody;
sPEM += "\r\n-----END RSA PRIVATE KEY-----\r\n";
return sPEM;
},
/**
* get PEM formatted encrypted PKCS#5 private key from RSAKey object of private key
* @name getEryptedPKCS5PEMFromRSAKey
* @memberOf PKCS5PKEY
* @function
* @param {RSAKey} pKey RSAKey object of private key
* @param {String} passcode pass code to protect private key (ex. password)
* @param {String} alg algorithm name to protect private key (default AES-256-CBC)
* @param {String} ivsaltHex hexadecimal string of IV and salt (default generated random IV)
* @return {String} string of PEM formatted encrypted PKCS#5 private key
* @since pkcs5pkey 1.0.2
* @description
* <br/>
* generate PEM formatted encrypted PKCS#5 private key by
* {@link RSAKey} object of RSA private key and passcode.
* Following argument can be omitted.
* <ul>
* <li>alg - AES-256-CBC will be used if omitted.</li>
* <li>ivsaltHex - automatically generate IV and salt which length depends on algorithm</li>
* </ul>
* @example
* var pkey = new RSAKey();
* pkey.generate(1024, '10001'); // generate 1024bit RSA private key with public exponent 'x010001'
* var pem = PKCS5PKEY.getEryptedPKCS5PEMFromRSAKey(pkey, "password");
*/
getEryptedPKCS5PEMFromRSAKey: function(pKey, passcode, alg, ivsaltHex) {
var version = new KJUR.asn1.DERInteger({'int': 0});
var n = new KJUR.asn1.DERInteger({'bigint': pKey.n});
var e = new KJUR.asn1.DERInteger({'int': pKey.e});
var d = new KJUR.asn1.DERInteger({'bigint': pKey.d});
var p = new KJUR.asn1.DERInteger({'bigint': pKey.p});
var q = new KJUR.asn1.DERInteger({'bigint': pKey.q});
var dmp1 = new KJUR.asn1.DERInteger({'bigint': pKey.dmp1});
var dmq1 = new KJUR.asn1.DERInteger({'bigint': pKey.dmq1});
var coeff = new KJUR.asn1.DERInteger({'bigint': pKey.coeff});
var seq = new KJUR.asn1.DERSequence({'array': [version, n, e, d, p, q, dmp1, dmq1, coeff]});
var hex = seq.getEncodedHex();
return this.getEryptedPKCS5PEMFromPrvKeyHex(hex, passcode, alg, ivsaltHex);
},
/**
* generate RSAKey and PEM formatted encrypted PKCS#5 private key
* @name newEncryptedPKCS5PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} passcode pass code to protect private key (ex. password)
* @param {Integer} keyLen key bit length of RSA key to be generated. (default 1024)
* @param {String} hPublicExponent hexadecimal string of public exponent (default 10001)
* @param {String} alg shared key algorithm to encrypt private key (default AES-258-CBC)
* @return {String} string of PEM formatted encrypted PKCS#5 private key
* @since pkcs5pkey 1.0.2
* @example
* var pem1 = PKCS5PKEY.newEncryptedPKCS5PEM("password"); // RSA1024bit/10001/AES-256-CBC
* var pem2 = PKCS5PKEY.newEncryptedPKCS5PEM("password", 512); // RSA 512bit/10001/AES-256-CBC
* var pem3 = PKCS5PKEY.newEncryptedPKCS5PEM("password", 512, '3'); // RSA 512bit/ 3/AES-256-CBC
*/
newEncryptedPKCS5PEM: function(passcode, keyLen, hPublicExponent, alg) {
if (typeof keyLen == "undefined" || keyLen == null) {
keyLen = 1024;
}
if (typeof hPublicExponent == "undefined" || hPublicExponent == null) {
hPublicExponent = '10001';
}
var pKey = new RSAKey();
pKey.generate(keyLen, hPublicExponent);
var pem = null;
if (typeof alg == "undefined" || alg == null) {
pem = this.getEncryptedPKCS5PEMFromRSAKey(pkey, passcode);
} else {
pem = this.getEncryptedPKCS5PEMFromRSAKey(pkey, passcode, alg);
}
return pem;
},
// === PKCS8 ===============================================================
/**
* read PEM formatted unencrypted PKCS#8 private key and returns RSAKey object
* @name getRSAKeyFromPlainPKCS8PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PEM PEM formatted unencrypted PKCS#8 private key
* @return {RSAKey} loaded RSAKey object of RSA private key
* @since pkcs5pkey 1.0.1
*/
getRSAKeyFromPlainPKCS8PEM: function(pkcs8PEM) {
if (pkcs8PEM.match(/ENCRYPTED/))
throw "pem shall be not ENCRYPTED";
var prvKeyHex = this.getHexFromPEM(pkcs8PEM, "PRIVATE KEY");
var rsaKey = this.getRSAKeyFromPlainPKCS8Hex(prvKeyHex);
return rsaKey;
},
/**
* provide hexadecimal string of unencrypted PKCS#8 private key and returns RSAKey object
* @name getRSAKeyFromPlainPKCS8Hex
* @memberOf PKCS5PKEY
* @function
* @param {String} prvKeyHex hexadecimal string of unencrypted PKCS#8 private key
* @return {RSAKey} loaded RSAKey object of RSA private key
* @since pkcs5pkey 1.0.3
*/
getRSAKeyFromPlainPKCS8Hex: function(prvKeyHex) {
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(prvKeyHex, 0);
if (a1.length != 3)
throw "outer DERSequence shall have 3 elements: " + a1.length;
var algIdTLV =ASN1HEX.getHexOfTLV_AtObj(prvKeyHex, a1[1]);
if (algIdTLV != "300d06092a864886f70d0101010500") // AlgId rsaEncryption
throw "PKCS8 AlgorithmIdentifier is not rsaEnc: " + algIdTLV;
var algIdTLV = ASN1HEX.getHexOfTLV_AtObj(prvKeyHex, a1[1]);
var octetStr = ASN1HEX.getHexOfTLV_AtObj(prvKeyHex, a1[2]);
var p5KeyHex = ASN1HEX.getHexOfV_AtObj(octetStr, 0);
//alert(p5KeyHex);
var rsaKey = new RSAKey();
rsaKey.readPrivateKeyFromASN1HexString(p5KeyHex);
return rsaKey;
},
/**
* generate PBKDF2 key hexstring with specified passcode and information
* @name parseHexOfEncryptedPKCS8
* @memberOf PKCS5PKEY
* @function
* @param {String} passcode passcode to decrypto private key
* @return {Array} info associative array of PKCS#8 parameters
* @since pkcs5pkey 1.0.3
* @description
* The associative array which is returned by this method has following properties:
* <ul>
* <li>info.pbkdf2Salt - hexadecimal string of PBKDF2 salt</li>
* <li>info.pkbdf2Iter - iteration count</li>
* <li>info.ciphertext - hexadecimal string of encrypted private key</li>
* <li>info.encryptionSchemeAlg - encryption algorithm name (currently TripleDES only)</li>
* <li>info.encryptionSchemeIV - initial vector for encryption algorithm</li>
* </ul>
* Currently, this method only supports PKCS#5v2.0 with PBES2/PBDKF2 of HmacSHA1 and TripleDES.
* <ul>
* <li>keyDerivationFunc = pkcs5PBKDF2 with HmacSHA1</li>
* <li>encryptionScheme = des-EDE3-CBC(i.e. TripleDES</li>
* </ul>
* @example
* // to convert plain PKCS#5 private key to encrypted PKCS#8 private
* // key with PBKDF2 with TripleDES
* % openssl pkcs8 -in plain_p5.pem -topk8 -v2 -des3 -out encrypted_p8.pem
*/
parseHexOfEncryptedPKCS8: function(sHEX) {
var info = {};
var a0 = ASN1HEX.getPosArrayOfChildren_AtObj(sHEX, 0);
if (a0.length != 2)
throw "malformed format: SEQUENCE(0).items != 2: " + a0.length;
// 1. ciphertext
info.ciphertext = ASN1HEX.getHexOfV_AtObj(sHEX, a0[1]);
// 2. pkcs5PBES2
var a0_0 = ASN1HEX.getPosArrayOfChildren_AtObj(sHEX, a0[0]);
if (a0_0.length != 2)
throw "malformed format: SEQUENCE(0.0).items != 2: " + a0_0.length;
// 2.1 check if pkcs5PBES2(1 2 840 113549 1 5 13)
if (ASN1HEX.getHexOfV_AtObj(sHEX, a0_0[0]) != "2a864886f70d01050d")
throw "this only supports pkcs5PBES2";
// 2.2 pkcs5PBES2 param
var a0_0_1 = ASN1HEX.getPosArrayOfChildren_AtObj(sHEX, a0_0[1]);
if (a0_0.length != 2)
throw "malformed format: SEQUENCE(0.0.1).items != 2: " + a0_0_1.length;
// 2.2.1 encryptionScheme
var a0_0_1_1 = ASN1HEX.getPosArrayOfChildren_AtObj(sHEX, a0_0_1[1]);
if (a0_0_1_1.length != 2)
throw "malformed format: SEQUENCE(0.0.1.1).items != 2: " + a0_0_1_1.length;
if (ASN1HEX.getHexOfV_AtObj(sHEX, a0_0_1_1[0]) != "2a864886f70d0307")
throw "this only supports TripleDES";
info.encryptionSchemeAlg = "TripleDES";
// 2.2.1.1 IV of encryptionScheme
info.encryptionSchemeIV = ASN1HEX.getHexOfV_AtObj(sHEX, a0_0_1_1[1]);
// 2.2.2 keyDerivationFunc
var a0_0_1_0 = ASN1HEX.getPosArrayOfChildren_AtObj(sHEX, a0_0_1[0]);
if (a0_0_1_0.length != 2)
throw "malformed format: SEQUENCE(0.0.1.0).items != 2: " + a0_0_1_0.length;
if (ASN1HEX.getHexOfV_AtObj(sHEX, a0_0_1_0[0]) != "2a864886f70d01050c")
throw "this only supports pkcs5PBKDF2";
// 2.2.2.1 pkcs5PBKDF2 param
var a0_0_1_0_1 = ASN1HEX.getPosArrayOfChildren_AtObj(sHEX, a0_0_1_0[1]);
if (a0_0_1_0_1.length < 2)
throw "malformed format: SEQUENCE(0.0.1.0.1).items < 2: " + a0_0_1_0_1.length;
// 2.2.2.1.1 PBKDF2 salt
info.pbkdf2Salt = ASN1HEX.getHexOfV_AtObj(sHEX, a0_0_1_0_1[0]);
// 2.2.2.1.2 PBKDF2 iter
var iterNumHex = ASN1HEX.getHexOfV_AtObj(sHEX, a0_0_1_0_1[1]);
try {
info.pbkdf2Iter = parseInt(iterNumHex, 16);
} catch(ex) {
throw "malformed format pbkdf2Iter: " + iterNumHex;
}
return info;
},
/**
* generate PBKDF2 key hexstring with specified passcode and information
* @name getPBKDF2KeyHexFromParam
* @memberOf PKCS5PKEY
* @function
* @param {Array} info result of {@link parseHexOfEncryptedPKCS8} which has preference of PKCS#8 file
* @param {String} passcode passcode to decrypto private key
* @return {String} hexadecimal string of PBKDF2 key
* @since pkcs5pkey 1.0.3
* @description
* As for info, this uses following properties:
* <ul>
* <li>info.pbkdf2Salt - hexadecimal string of PBKDF2 salt</li>
* <li>info.pkbdf2Iter - iteration count</li>
* </ul>
* Currently, this method only supports PKCS#5v2.0 with PBES2/PBDKF2 of HmacSHA1 and TripleDES.
* <ul>
* <li>keyDerivationFunc = pkcs5PBKDF2 with HmacSHA1</li>
* <li>encryptionScheme = des-EDE3-CBC(i.e. TripleDES</li>
* </ul>
* @example
* // to convert plain PKCS#5 private key to encrypted PKCS#8 private
* // key with PBKDF2 with TripleDES
* % openssl pkcs8 -in plain_p5.pem -topk8 -v2 -des3 -out encrypted_p8.pem
*/
getPBKDF2KeyHexFromParam: function(info, passcode) {
var pbkdf2SaltWS = CryptoJS.enc.Hex.parse(info.pbkdf2Salt);
var pbkdf2Iter = info.pbkdf2Iter;
var pbkdf2KeyWS = CryptoJS.PBKDF2(passcode,
pbkdf2SaltWS,
{ keySize: 192/32, iterations: pbkdf2Iter });
var pbkdf2KeyHex = CryptoJS.enc.Hex.stringify(pbkdf2KeyWS);
return pbkdf2KeyHex;
},
/**
* read PEM formatted encrypted PKCS#8 private key and returns hexadecimal string of plain PKCS#8 private key
* @name getPlainPKCS8HexFromEncryptedPKCS8PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PEM PEM formatted encrypted PKCS#8 private key
* @param {String} passcode passcode to decrypto private key
* @return {String} hexadecimal string of plain PKCS#8 private key
* @since pkcs5pkey 1.0.3
* @description
* Currently, this method only supports PKCS#5v2.0 with PBES2/PBDKF2 of HmacSHA1 and TripleDES.
* <ul>
* <li>keyDerivationFunc = pkcs5PBKDF2 with HmacSHA1</li>
* <li>encryptionScheme = des-EDE3-CBC(i.e. TripleDES</li>
* </ul>
* @example
* // to convert plain PKCS#5 private key to encrypted PKCS#8 private
* // key with PBKDF2 with TripleDES
* % openssl pkcs8 -in plain_p5.pem -topk8 -v2 -des3 -out encrypted_p8.pem
*/
getPlainPKCS8HexFromEncryptedPKCS8PEM: function(pkcs8PEM, passcode) {
// 1. derHex - PKCS#8 private key encrypted by PBKDF2
var derHex = this.getHexFromPEM(pkcs8PEM, "ENCRYPTED PRIVATE KEY");
// 2. info - PKCS#5 PBES info
var info = this.parseHexOfEncryptedPKCS8(derHex);
// 3. hKey - PBKDF2 key
var pbkdf2KeyHex = PKCS5PKEY.getPBKDF2KeyHexFromParam(info, passcode);
// 4. decrypt ciphertext by PBKDF2 key
var encrypted = {};
encrypted.ciphertext = CryptoJS.enc.Hex.parse(info.ciphertext);
var pbkdf2KeyWS = CryptoJS.enc.Hex.parse(pbkdf2KeyHex);
var des3IVWS = CryptoJS.enc.Hex.parse(info.encryptionSchemeIV);
var decWS = CryptoJS.TripleDES.decrypt(encrypted, pbkdf2KeyWS, { iv: des3IVWS });
var decHex = CryptoJS.enc.Hex.stringify(decWS);
return decHex;
},
/**
* read PEM formatted encrypted PKCS#8 private key and returns RSAKey object
* @name getRSAKeyFromEncryptedPKCS8PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PEM PEM formatted encrypted PKCS#8 private key
* @param {String} passcode passcode to decrypto private key
* @return {RSAKey} loaded RSAKey object of RSA private key
* @since pkcs5pkey 1.0.3
* @description
* Currently, this method only supports PKCS#5v2.0 with PBES2/PBDKF2 of HmacSHA1 and TripleDES.
* <ul>
* <li>keyDerivationFunc = pkcs5PBKDF2 with HmacSHA1</li>
* <li>encryptionScheme = des-EDE3-CBC(i.e. TripleDES</li>
* </ul>
* @example
* // to convert plain PKCS#5 private key to encrypted PKCS#8 private
* // key with PBKDF2 with TripleDES
* % openssl pkcs8 -in plain_p5.pem -topk8 -v2 -des3 -out encrypted_p8.pem
*/
getRSAKeyFromEncryptedPKCS8PEM: function(pkcs8PEM, passcode) {
var prvKeyHex = this.getPlainPKCS8HexFromEncryptedPKCS8PEM(pkcs8PEM, passcode);
var rsaKey = this.getRSAKeyFromPlainPKCS8Hex(prvKeyHex);
return rsaKey;
},
/**
* get RSAKey/ECDSA private key object from encrypted PEM PKCS#8 private key
* @name getKeyFromEncryptedPKCS8PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PEM string of PEM formatted PKCS#8 private key
* @param {String} passcode passcode string to decrypt key
* @return {Object} RSAKey or KJUR.crypto.ECDSA private key object
* @since pkcs5pkey 1.0.5
*/
getKeyFromEncryptedPKCS8PEM: function(pkcs8PEM, passcode) {
var prvKeyHex = this.getPlainPKCS8HexFromEncryptedPKCS8PEM(pkcs8PEM, passcode);
var key = this.getKeyFromPlainPrivatePKCS8Hex(prvKeyHex);
return key;
},
/**
* parse hexadecimal string of plain PKCS#8 private key
* @name parsePlainPrivatePKCS8Hex
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PrvHex hexadecimal string of PKCS#8 plain private key
* @return {Array} associative array of parsed key
* @since pkcs5pkey 1.0.5
* @description
* Resulted associative array has following properties:
* <ul>
* <li>algoid - hexadecimal string of OID of asymmetric key algorithm</li>
* <li>algparam - hexadecimal string of OID of ECC curve name or null</li>
* <li>keyidx - string starting index of key in pkcs8PrvHex</li>
* </ul>
*/
parsePlainPrivatePKCS8Hex: function(pkcs8PrvHex) {
var result = {};
result.algparam = null;
// 1. sequence
if (pkcs8PrvHex.substr(0, 2) != "30")
throw "malformed plain PKCS8 private key(code:001)"; // not sequence
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(pkcs8PrvHex, 0);
if (a1.length != 3)
throw "malformed plain PKCS8 private key(code:002)";
// 2. AlgID
if (pkcs8PrvHex.substr(a1[1], 2) != "30")
throw "malformed PKCS8 private key(code:003)"; // AlgId not sequence
var a2 = ASN1HEX.getPosArrayOfChildren_AtObj(pkcs8PrvHex, a1[1]);
if (a2.length != 2)
throw "malformed PKCS8 private key(code:004)"; // AlgId not have two elements
// 2.1. AlgID OID
if (pkcs8PrvHex.substr(a2[0], 2) != "06")
throw "malformed PKCS8 private key(code:005)"; // AlgId.oid is not OID
result.algoid = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a2[0]);
// 2.2. AlgID param
if (pkcs8PrvHex.substr(a2[1], 2) == "06") {
result.algparam = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a2[1]);
}
// 3. Key index
if (pkcs8PrvHex.substr(a1[2], 2) != "04")
throw "malformed PKCS8 private key(code:006)"; // not octet string
result.keyidx = ASN1HEX.getStartPosOfV_AtObj(pkcs8PrvHex, a1[2]);
return result;
},
/**
* get RSAKey/ECDSA private key object from PEM plain PEM PKCS#8 private key
* @name getKeyFromPlainPrivatePKCS8PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PEM string of plain PEM formatted PKCS#8 private key
* @return {Object} RSAKey or KJUR.crypto.ECDSA private key object
* @since pkcs5pkey 1.0.5
*/
getKeyFromPlainPrivatePKCS8PEM: function(prvKeyPEM) {
var prvKeyHex = this.getHexFromPEM(prvKeyPEM, "PRIVATE KEY");
var key = this.getKeyFromPlainPrivatePKCS8Hex(prvKeyHex);
return key;
},
/**
* get RSAKey/ECDSA private key object from HEX plain PEM PKCS#8 private key
* @name getKeyFromPlainPrivatePKCS8Hex
* @memberOf PKCS5PKEY
* @function
* @param {String} prvKeyHex hexadecimal string of plain PKCS#8 private key
* @return {Object} RSAKey or KJUR.crypto.ECDSA private key object
* @since pkcs5pkey 1.0.5
*/
getKeyFromPlainPrivatePKCS8Hex: function(prvKeyHex) {
var p8 = this.parsePlainPrivatePKCS8Hex(prvKeyHex);
if (p8.algoid == "2a864886f70d010101") { // RSA
this.parsePrivateRawRSAKeyHexAtObj(prvKeyHex, p8);
var k = p8.key;
var key = new RSAKey();
key.setPrivateEx(k.n, k.e, k.d, k.p, k.q, k.dp, k.dq, k.co);
return key;
} else if (p8.algoid == "2a8648ce3d0201") { // ECC
this.parsePrivateRawECKeyHexAtObj(prvKeyHex, p8);
if (KJUR.crypto.OID.oidhex2name[p8.algparam] === undefined)
throw "KJUR.crypto.OID.oidhex2name undefined: " + p8.algparam;
var curveName = KJUR.crypto.OID.oidhex2name[p8.algparam];
var key = new KJUR.crypto.ECDSA({'curve': curveName, 'prv': p8.key});
return key;
} else {
throw "unsupported private key algorithm";
}
},
// === PKCS8 RSA Public Key ================================================
/**
* read PEM formatted PKCS#8 public key and returns RSAKey object
* @name getRSAKeyFromPublicPKCS8PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PubPEM PEM formatted PKCS#8 public key
* @return {RSAKey} loaded RSAKey object of RSA public key
* @since pkcs5pkey 1.0.4
*/
getRSAKeyFromPublicPKCS8PEM: function(pkcs8PubPEM) {
var pubKeyHex = this.getHexFromPEM(pkcs8PubPEM, "PUBLIC KEY");
var rsaKey = this.getRSAKeyFromPublicPKCS8Hex(pubKeyHex);
return rsaKey;
},
/**
* get RSAKey/ECDSA public key object from PEM PKCS#8 public key
* @name getKeyFromPublicPKCS8PEM
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcsPub8PEM string of PEM formatted PKCS#8 public key
* @return {Object} RSAKey or KJUR.crypto.ECDSA private key object
* @since pkcs5pkey 1.0.5
*/
getKeyFromPublicPKCS8PEM: function(pkcs8PubPEM) {
var pubKeyHex = this.getHexFromPEM(pkcs8PubPEM, "PUBLIC KEY");
var key = this.getKeyFromPublicPKCS8Hex(pubKeyHex);
return key;
},
/**
* get RSAKey/ECDSA public key object from hexadecimal string of PKCS#8 public key
* @name getKeyFromPublicPKCS8Hex
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcsPub8Hex hexadecimal string of PKCS#8 public key
* @return {Object} RSAKey or KJUR.crypto.ECDSA private key object
* @since pkcs5pkey 1.0.5
*/
getKeyFromPublicPKCS8Hex: function(pkcs8PubHex) {
var p8 = this.parsePublicPKCS8Hex(pkcs8PubHex);
if (p8.algoid == "2a864886f70d010101") { // RSA
var aRSA = this.parsePublicRawRSAKeyHex(p8.key);
var key = new RSAKey();
key.setPublic(aRSA.n, aRSA.e);
return key;
} else if (p8.algoid == "2a8648ce3d0201") { // ECC
if (KJUR.crypto.OID.oidhex2name[p8.algparam] === undefined)
throw "KJUR.crypto.OID.oidhex2name undefined: " + p8.algparam;
var curveName = KJUR.crypto.OID.oidhex2name[p8.algparam];
var key = new KJUR.crypto.ECDSA({'curve': curveName, 'pub': p8.key});
return key;
} else {
throw "unsupported public key algorithm";
}
},
/**
* parse hexadecimal string of plain PKCS#8 private key
* @name parsePublicRawRSAKeyHex
* @memberOf PKCS5PKEY
* @function
* @param {String} pubRawRSAHex hexadecimal string of ASN.1 encoded PKCS#8 public key
* @return {Array} associative array of parsed key
* @since pkcs5pkey 1.0.5
* @description
* Resulted associative array has following properties:
* <ul>
* <li>n - hexadecimal string of public key
* <li>e - hexadecimal string of public exponent
* </ul>
*/
parsePublicRawRSAKeyHex: function(pubRawRSAHex) {
var result = {};
// 1. Sequence
if (pubRawRSAHex.substr(0, 2) != "30")
throw "malformed RSA key(code:001)"; // not sequence
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(pubRawRSAHex, 0);
if (a1.length != 2)
throw "malformed RSA key(code:002)"; // not 2 items in seq
// 2. public key "N"
if (pubRawRSAHex.substr(a1[0], 2) != "02")
throw "malformed RSA key(code:003)"; // 1st item is not integer
result.n = ASN1HEX.getHexOfV_AtObj(pubRawRSAHex, a1[0]);
// 3. public key "E"
if (pubRawRSAHex.substr(a1[1], 2) != "02")
throw "malformed RSA key(code:004)"; // 2nd item is not integer
result.e = ASN1HEX.getHexOfV_AtObj(pubRawRSAHex, a1[1]);
return result;
},
/**
* parse hexadecimal string of RSA private key
* @name parsePrivateRawRSAKeyHexAtObj
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PrvHex hexadecimal string of PKCS#8 private key concluding RSA private key
* @return {Array} info associative array to add parsed RSA private key information
* @since pkcs5pkey 1.0.5
* @description
* Following properties are added to associative array 'info'
* <ul>
* <li>n - hexadecimal string of public key
* <li>e - hexadecimal string of public exponent
* <li>d - hexadecimal string of private key
* <li>p - hexadecimal string
* <li>q - hexadecimal string
* <li>dp - hexadecimal string
* <li>dq - hexadecimal string
* <li>co - hexadecimal string
* </ul>
*/
parsePrivateRawRSAKeyHexAtObj: function(pkcs8PrvHex, info) {
var keyIdx = info.keyidx;
// 1. sequence
if (pkcs8PrvHex.substr(keyIdx, 2) != "30")
throw "malformed RSA private key(code:001)"; // not sequence
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(pkcs8PrvHex, keyIdx);
if (a1.length != 9)
throw "malformed RSA private key(code:002)"; // not sequence
// 2. RSA key
info.key = {};
info.key.n = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a1[1]);
info.key.e = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a1[2]);
info.key.d = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a1[3]);
info.key.p = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a1[4]);
info.key.q = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a1[5]);
info.key.dp = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a1[6]);
info.key.dq = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a1[7]);
info.key.co = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a1[8]);
},
/**
* parse hexadecimal string of ECC private key
* @name parsePrivateRawECKeyHexAtObj
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PrvHex hexadecimal string of PKCS#8 private key concluding EC private key
* @return {Array} info associative array to add parsed ECC private key information
* @since pkcs5pkey 1.0.5
* @description
* Following properties are added to associative array 'info'
* <ul>
* <li>key - hexadecimal string of ECC private key
* </ul>
*/
parsePrivateRawECKeyHexAtObj: function(pkcs8PrvHex, info) {
var keyIdx = info.keyidx;
// 1. sequence
if (pkcs8PrvHex.substr(keyIdx, 2) != "30")
throw "malformed ECC private key(code:001)"; // not sequence
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(pkcs8PrvHex, keyIdx);
if (a1.length != 3)
throw "malformed ECC private key(code:002)"; // not sequence
// 2. EC private key
if (pkcs8PrvHex.substr(a1[1], 2) != "04")
throw "malformed ECC private key(code:003)"; // not octetstring
info.key = ASN1HEX.getHexOfV_AtObj(pkcs8PrvHex, a1[1]);
},
/**
* parse hexadecimal string of PKCS#8 public key
* @name parsePublicPKCS8Hex
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PubHex hexadecimal string of PKCS#8 public key
* @return {Hash} hash of key information
* @description
* Resulted hash has following attributes.
* <ul>
* <li>algoid - hexadecimal string of OID of asymmetric key algorithm</li>
* <li>algparam - hexadecimal string of OID of ECC curve name or null</li>
* <li>key - hexadecimal string of public key</li>
* </ul>
*/
parsePublicPKCS8Hex: function(pkcs8PubHex) {
var result = {};
result.algparam = null;
// 1. AlgID and Key bit string
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(pkcs8PubHex, 0);
if (a1.length != 2)
throw "outer DERSequence shall have 2 elements: " + a1.length;
// 2. AlgID
var idxAlgIdTLV = a1[0];
if (pkcs8PubHex.substr(idxAlgIdTLV, 2) != "30")
throw "malformed PKCS8 public key(code:001)"; // AlgId not sequence
var a2 = ASN1HEX.getPosArrayOfChildren_AtObj(pkcs8PubHex, idxAlgIdTLV);
if (a2.length != 2)
throw "malformed PKCS8 public key(code:002)"; // AlgId not have two elements
// 2.1. AlgID OID
if (pkcs8PubHex.substr(a2[0], 2) != "06")
throw "malformed PKCS8 public key(code:003)"; // AlgId.oid is not OID
result.algoid = ASN1HEX.getHexOfV_AtObj(pkcs8PubHex, a2[0]);
// 2.2. AlgID param
if (pkcs8PubHex.substr(a2[1], 2) == "06") {
result.algparam = ASN1HEX.getHexOfV_AtObj(pkcs8PubHex, a2[1]);
}
// 3. Key
if (pkcs8PubHex.substr(a1[1], 2) != "03")
throw "malformed PKCS8 public key(code:004)"; // Key is not bit string
result.key = ASN1HEX.getHexOfV_AtObj(pkcs8PubHex, a1[1]).substr(2);
// 4. return result assoc array
return result;
},
/**
* provide hexadecimal string of unencrypted PKCS#8 private key and returns RSAKey object
* @name getRSAKeyFromPublicPKCS8Hex
* @memberOf PKCS5PKEY
* @function
* @param {String} pkcs8PubHex hexadecimal string of unencrypted PKCS#8 public key
* @return {RSAKey} loaded RSAKey object of RSA public key
* @since pkcs5pkey 1.0.4
*/
getRSAKeyFromPublicPKCS8Hex: function(pkcs8PubHex) {
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(pkcs8PubHex, 0);
if (a1.length != 2)
throw "outer DERSequence shall have 2 elements: " + a1.length;
var algIdTLV =ASN1HEX.getHexOfTLV_AtObj(pkcs8PubHex, a1[0]);
if (algIdTLV != "300d06092a864886f70d0101010500") // AlgId rsaEncryption
throw "PKCS8 AlgorithmId is not rsaEncryption";
if (pkcs8PubHex.substr(a1[1], 2) != "03")
throw "PKCS8 Public Key is not BITSTRING encapslated.";
var idxPub = ASN1HEX.getStartPosOfV_AtObj(pkcs8PubHex, a1[1]) + 2; // 2 for unused bit
if (pkcs8PubHex.substr(idxPub, 2) != "30")
throw "PKCS8 Public Key is not SEQUENCE.";
var a2 = ASN1HEX.getPosArrayOfChildren_AtObj(pkcs8PubHex, idxPub);
if (a2.length != 2)
throw "inner DERSequence shall have 2 elements: " + a2.length;
if (pkcs8PubHex.substr(a2[0], 2) != "02")
throw "N is not ASN.1 INTEGER";
if (pkcs8PubHex.substr(a2[1], 2) != "02")
throw "E is not ASN.1 INTEGER";
var hN = ASN1HEX.getHexOfV_AtObj(pkcs8PubHex, a2[0]);
var hE = ASN1HEX.getHexOfV_AtObj(pkcs8PubHex, a2[1]);
var pubKey = new RSAKey();
pubKey.setPublic(hN, hE);
return pubKey;
},
};
}();