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;(function (root, factory, undef) { | |
if (typeof exports === "object") { | |
// CommonJS | |
module.exports = exports = factory(require("./core"), require("./evpkdf")); | |
} | |
else if (typeof define === "function" && define.amd) { | |
// AMD | |
define(["./core", "./evpkdf"], factory); | |
} | |
else { | |
// Global (browser) | |
factory(root.CryptoJS); | |
} | |
}(this, function (CryptoJS) { | |
/** | |
* Cipher core components. | |
*/ | |
CryptoJS.lib.Cipher || (function (undefined) { | |
// Shortcuts | |
var C = CryptoJS; | |
var C_lib = C.lib; | |
var Base = C_lib.Base; | |
var WordArray = C_lib.WordArray; | |
var BufferedBlockAlgorithm = C_lib.BufferedBlockAlgorithm; | |
var C_enc = C.enc; | |
var Utf8 = C_enc.Utf8; | |
var Base64 = C_enc.Base64; | |
var C_algo = C.algo; | |
var EvpKDF = C_algo.EvpKDF; | |
/** | |
* Abstract base cipher template. | |
* | |
* @property {number} keySize This cipher's key size. Default: 4 (128 bits) | |
* @property {number} ivSize This cipher's IV size. Default: 4 (128 bits) | |
* @property {number} _ENC_XFORM_MODE A constant representing encryption mode. | |
* @property {number} _DEC_XFORM_MODE A constant representing decryption mode. | |
*/ | |
var Cipher = C_lib.Cipher = BufferedBlockAlgorithm.extend({ | |
/** | |
* Configuration options. | |
* | |
* @property {WordArray} iv The IV to use for this operation. | |
*/ | |
cfg: Base.extend(), | |
/** | |
* Creates this cipher in encryption mode. | |
* | |
* @param {WordArray} key The key. | |
* @param {Object} cfg (Optional) The configuration options to use for this operation. | |
* | |
* @return {Cipher} A cipher instance. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var cipher = CryptoJS.algo.AES.createEncryptor(keyWordArray, { iv: ivWordArray }); | |
*/ | |
createEncryptor: function (key, cfg) { | |
return this.create(this._ENC_XFORM_MODE, key, cfg); | |
}, | |
/** | |
* Creates this cipher in decryption mode. | |
* | |
* @param {WordArray} key The key. | |
* @param {Object} cfg (Optional) The configuration options to use for this operation. | |
* | |
* @return {Cipher} A cipher instance. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var cipher = CryptoJS.algo.AES.createDecryptor(keyWordArray, { iv: ivWordArray }); | |
*/ | |
createDecryptor: function (key, cfg) { | |
return this.create(this._DEC_XFORM_MODE, key, cfg); | |
}, | |
/** | |
* Initializes a newly created cipher. | |
* | |
* @param {number} xformMode Either the encryption or decryption transormation mode constant. | |
* @param {WordArray} key The key. | |
* @param {Object} cfg (Optional) The configuration options to use for this operation. | |
* | |
* @example | |
* | |
* var cipher = CryptoJS.algo.AES.create(CryptoJS.algo.AES._ENC_XFORM_MODE, keyWordArray, { iv: ivWordArray }); | |
*/ | |
init: function (xformMode, key, cfg) { | |
// Apply config defaults | |
this.cfg = this.cfg.extend(cfg); | |
// Store transform mode and key | |
this._xformMode = xformMode; | |
this._key = key; | |
// Set initial values | |
this.reset(); | |
}, | |
/** | |
* Resets this cipher to its initial state. | |
* | |
* @example | |
* | |
* cipher.reset(); | |
*/ | |
reset: function () { | |
// Reset data buffer | |
BufferedBlockAlgorithm.reset.call(this); | |
// Perform concrete-cipher logic | |
this._doReset(); | |
}, | |
/** | |
* Adds data to be encrypted or decrypted. | |
* | |
* @param {WordArray|string} dataUpdate The data to encrypt or decrypt. | |
* | |
* @return {WordArray} The data after processing. | |
* | |
* @example | |
* | |
* var encrypted = cipher.process('data'); | |
* var encrypted = cipher.process(wordArray); | |
*/ | |
process: function (dataUpdate) { | |
// Append | |
this._append(dataUpdate); | |
// Process available blocks | |
return this._process(); | |
}, | |
/** | |
* Finalizes the encryption or decryption process. | |
* Note that the finalize operation is effectively a destructive, read-once operation. | |
* | |
* @param {WordArray|string} dataUpdate The final data to encrypt or decrypt. | |
* | |
* @return {WordArray} The data after final processing. | |
* | |
* @example | |
* | |
* var encrypted = cipher.finalize(); | |
* var encrypted = cipher.finalize('data'); | |
* var encrypted = cipher.finalize(wordArray); | |
*/ | |
finalize: function (dataUpdate) { | |
// Final data update | |
if (dataUpdate) { | |
this._append(dataUpdate); | |
} | |
// Perform concrete-cipher logic | |
var finalProcessedData = this._doFinalize(); | |
return finalProcessedData; | |
}, | |
keySize: 128/32, | |
ivSize: 128/32, | |
_ENC_XFORM_MODE: 1, | |
_DEC_XFORM_MODE: 2, | |
/** | |
* Creates shortcut functions to a cipher's object interface. | |
* | |
* @param {Cipher} cipher The cipher to create a helper for. | |
* | |
* @return {Object} An object with encrypt and decrypt shortcut functions. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var AES = CryptoJS.lib.Cipher._createHelper(CryptoJS.algo.AES); | |
*/ | |
_createHelper: (function () { | |
function selectCipherStrategy(key) { | |
if (typeof key == 'string') { | |
return PasswordBasedCipher; | |
} else { | |
return SerializableCipher; | |
} | |
} | |
return function (cipher) { | |
return { | |
encrypt: function (message, key, cfg) { | |
return selectCipherStrategy(key).encrypt(cipher, message, key, cfg); | |
}, | |
decrypt: function (ciphertext, key, cfg) { | |
return selectCipherStrategy(key).decrypt(cipher, ciphertext, key, cfg); | |
} | |
}; | |
}; | |
}()) | |
}); | |
/** | |
* Abstract base stream cipher template. | |
* | |
* @property {number} blockSize The number of 32-bit words this cipher operates on. Default: 1 (32 bits) | |
*/ | |
var StreamCipher = C_lib.StreamCipher = Cipher.extend({ | |
_doFinalize: function () { | |
// Process partial blocks | |
var finalProcessedBlocks = this._process(!!'flush'); | |
return finalProcessedBlocks; | |
}, | |
blockSize: 1 | |
}); | |
/** | |
* Mode namespace. | |
*/ | |
var C_mode = C.mode = {}; | |
/** | |
* Abstract base block cipher mode template. | |
*/ | |
var BlockCipherMode = C_lib.BlockCipherMode = Base.extend({ | |
/** | |
* Creates this mode for encryption. | |
* | |
* @param {Cipher} cipher A block cipher instance. | |
* @param {Array} iv The IV words. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var mode = CryptoJS.mode.CBC.createEncryptor(cipher, iv.words); | |
*/ | |
createEncryptor: function (cipher, iv) { | |
return this.Encryptor.create(cipher, iv); | |
}, | |
/** | |
* Creates this mode for decryption. | |
* | |
* @param {Cipher} cipher A block cipher instance. | |
* @param {Array} iv The IV words. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var mode = CryptoJS.mode.CBC.createDecryptor(cipher, iv.words); | |
*/ | |
createDecryptor: function (cipher, iv) { | |
return this.Decryptor.create(cipher, iv); | |
}, | |
/** | |
* Initializes a newly created mode. | |
* | |
* @param {Cipher} cipher A block cipher instance. | |
* @param {Array} iv The IV words. | |
* | |
* @example | |
* | |
* var mode = CryptoJS.mode.CBC.Encryptor.create(cipher, iv.words); | |
*/ | |
init: function (cipher, iv) { | |
this._cipher = cipher; | |
this._iv = iv; | |
} | |
}); | |
/** | |
* Cipher Block Chaining mode. | |
*/ | |
var CBC = C_mode.CBC = (function () { | |
/** | |
* Abstract base CBC mode. | |
*/ | |
var CBC = BlockCipherMode.extend(); | |
/** | |
* CBC encryptor. | |
*/ | |
CBC.Encryptor = CBC.extend({ | |
/** | |
* Processes the data block at offset. | |
* | |
* @param {Array} words The data words to operate on. | |
* @param {number} offset The offset where the block starts. | |
* | |
* @example | |
* | |
* mode.processBlock(data.words, offset); | |
*/ | |
processBlock: function (words, offset) { | |
// Shortcuts | |
var cipher = this._cipher; | |
var blockSize = cipher.blockSize; | |
// XOR and encrypt | |
xorBlock.call(this, words, offset, blockSize); | |
cipher.encryptBlock(words, offset); | |
// Remember this block to use with next block | |
this._prevBlock = words.slice(offset, offset + blockSize); | |
} | |
}); | |
/** | |
* CBC decryptor. | |
*/ | |
CBC.Decryptor = CBC.extend({ | |
/** | |
* Processes the data block at offset. | |
* | |
* @param {Array} words The data words to operate on. | |
* @param {number} offset The offset where the block starts. | |
* | |
* @example | |
* | |
* mode.processBlock(data.words, offset); | |
*/ | |
processBlock: function (words, offset) { | |
// Shortcuts | |
var cipher = this._cipher; | |
var blockSize = cipher.blockSize; | |
// Remember this block to use with next block | |
var thisBlock = words.slice(offset, offset + blockSize); | |
// Decrypt and XOR | |
cipher.decryptBlock(words, offset); | |
xorBlock.call(this, words, offset, blockSize); | |
// This block becomes the previous block | |
this._prevBlock = thisBlock; | |
} | |
}); | |
function xorBlock(words, offset, blockSize) { | |
var block; | |
// Shortcut | |
var iv = this._iv; | |
// Choose mixing block | |
if (iv) { | |
block = iv; | |
// Remove IV for subsequent blocks | |
this._iv = undefined; | |
} else { | |
block = this._prevBlock; | |
} | |
// XOR blocks | |
for (var i = 0; i < blockSize; i++) { | |
words[offset + i] ^= block[i]; | |
} | |
} | |
return CBC; | |
}()); | |
/** | |
* Padding namespace. | |
*/ | |
var C_pad = C.pad = {}; | |
/** | |
* PKCS #5/7 padding strategy. | |
*/ | |
var Pkcs7 = C_pad.Pkcs7 = { | |
/** | |
* Pads data using the algorithm defined in PKCS #5/7. | |
* | |
* @param {WordArray} data The data to pad. | |
* @param {number} blockSize The multiple that the data should be padded to. | |
* | |
* @static | |
* | |
* @example | |
* | |
* CryptoJS.pad.Pkcs7.pad(wordArray, 4); | |
*/ | |
pad: function (data, blockSize) { | |
// Shortcut | |
var blockSizeBytes = blockSize * 4; | |
// Count padding bytes | |
var nPaddingBytes = blockSizeBytes - data.sigBytes % blockSizeBytes; | |
// Create padding word | |
var paddingWord = (nPaddingBytes << 24) | (nPaddingBytes << 16) | (nPaddingBytes << 8) | nPaddingBytes; | |
// Create padding | |
var paddingWords = []; | |
for (var i = 0; i < nPaddingBytes; i += 4) { | |
paddingWords.push(paddingWord); | |
} | |
var padding = WordArray.create(paddingWords, nPaddingBytes); | |
// Add padding | |
data.concat(padding); | |
}, | |
/** | |
* Unpads data that had been padded using the algorithm defined in PKCS #5/7. | |
* | |
* @param {WordArray} data The data to unpad. | |
* | |
* @static | |
* | |
* @example | |
* | |
* CryptoJS.pad.Pkcs7.unpad(wordArray); | |
*/ | |
unpad: function (data) { | |
// Get number of padding bytes from last byte | |
var nPaddingBytes = data.words[(data.sigBytes - 1) >>> 2] & 0xff; | |
// Remove padding | |
data.sigBytes -= nPaddingBytes; | |
} | |
}; | |
/** | |
* Abstract base block cipher template. | |
* | |
* @property {number} blockSize The number of 32-bit words this cipher operates on. Default: 4 (128 bits) | |
*/ | |
var BlockCipher = C_lib.BlockCipher = Cipher.extend({ | |
/** | |
* Configuration options. | |
* | |
* @property {Mode} mode The block mode to use. Default: CBC | |
* @property {Padding} padding The padding strategy to use. Default: Pkcs7 | |
*/ | |
cfg: Cipher.cfg.extend({ | |
mode: CBC, | |
padding: Pkcs7 | |
}), | |
reset: function () { | |
var modeCreator; | |
// Reset cipher | |
Cipher.reset.call(this); | |
// Shortcuts | |
var cfg = this.cfg; | |
var iv = cfg.iv; | |
var mode = cfg.mode; | |
// Reset block mode | |
if (this._xformMode == this._ENC_XFORM_MODE) { | |
modeCreator = mode.createEncryptor; | |
} else /* if (this._xformMode == this._DEC_XFORM_MODE) */ { | |
modeCreator = mode.createDecryptor; | |
// Keep at least one block in the buffer for unpadding | |
this._minBufferSize = 1; | |
} | |
if (this._mode && this._mode.__creator == modeCreator) { | |
this._mode.init(this, iv && iv.words); | |
} else { | |
this._mode = modeCreator.call(mode, this, iv && iv.words); | |
this._mode.__creator = modeCreator; | |
} | |
}, | |
_doProcessBlock: function (words, offset) { | |
this._mode.processBlock(words, offset); | |
}, | |
_doFinalize: function () { | |
var finalProcessedBlocks; | |
// Shortcut | |
var padding = this.cfg.padding; | |
// Finalize | |
if (this._xformMode == this._ENC_XFORM_MODE) { | |
// Pad data | |
padding.pad(this._data, this.blockSize); | |
// Process final blocks | |
finalProcessedBlocks = this._process(!!'flush'); | |
} else /* if (this._xformMode == this._DEC_XFORM_MODE) */ { | |
// Process final blocks | |
finalProcessedBlocks = this._process(!!'flush'); | |
// Unpad data | |
padding.unpad(finalProcessedBlocks); | |
} | |
return finalProcessedBlocks; | |
}, | |
blockSize: 128/32 | |
}); | |
/** | |
* A collection of cipher parameters. | |
* | |
* @property {WordArray} ciphertext The raw ciphertext. | |
* @property {WordArray} key The key to this ciphertext. | |
* @property {WordArray} iv The IV used in the ciphering operation. | |
* @property {WordArray} salt The salt used with a key derivation function. | |
* @property {Cipher} algorithm The cipher algorithm. | |
* @property {Mode} mode The block mode used in the ciphering operation. | |
* @property {Padding} padding The padding scheme used in the ciphering operation. | |
* @property {number} blockSize The block size of the cipher. | |
* @property {Format} formatter The default formatting strategy to convert this cipher params object to a string. | |
*/ | |
var CipherParams = C_lib.CipherParams = Base.extend({ | |
/** | |
* Initializes a newly created cipher params object. | |
* | |
* @param {Object} cipherParams An object with any of the possible cipher parameters. | |
* | |
* @example | |
* | |
* var cipherParams = CryptoJS.lib.CipherParams.create({ | |
* ciphertext: ciphertextWordArray, | |
* key: keyWordArray, | |
* iv: ivWordArray, | |
* salt: saltWordArray, | |
* algorithm: CryptoJS.algo.AES, | |
* mode: CryptoJS.mode.CBC, | |
* padding: CryptoJS.pad.PKCS7, | |
* blockSize: 4, | |
* formatter: CryptoJS.format.OpenSSL | |
* }); | |
*/ | |
init: function (cipherParams) { | |
this.mixIn(cipherParams); | |
}, | |
/** | |
* Converts this cipher params object to a string. | |
* | |
* @param {Format} formatter (Optional) The formatting strategy to use. | |
* | |
* @return {string} The stringified cipher params. | |
* | |
* @throws Error If neither the formatter nor the default formatter is set. | |
* | |
* @example | |
* | |
* var string = cipherParams + ''; | |
* var string = cipherParams.toString(); | |
* var string = cipherParams.toString(CryptoJS.format.OpenSSL); | |
*/ | |
toString: function (formatter) { | |
return (formatter || this.formatter).stringify(this); | |
} | |
}); | |
/** | |
* Format namespace. | |
*/ | |
var C_format = C.format = {}; | |
/** | |
* OpenSSL formatting strategy. | |
*/ | |
var OpenSSLFormatter = C_format.OpenSSL = { | |
/** | |
* Converts a cipher params object to an OpenSSL-compatible string. | |
* | |
* @param {CipherParams} cipherParams The cipher params object. | |
* | |
* @return {string} The OpenSSL-compatible string. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var openSSLString = CryptoJS.format.OpenSSL.stringify(cipherParams); | |
*/ | |
stringify: function (cipherParams) { | |
var wordArray; | |
// Shortcuts | |
var ciphertext = cipherParams.ciphertext; | |
var salt = cipherParams.salt; | |
// Format | |
if (salt) { | |
wordArray = WordArray.create([0x53616c74, 0x65645f5f]).concat(salt).concat(ciphertext); | |
} else { | |
wordArray = ciphertext; | |
} | |
return wordArray.toString(Base64); | |
}, | |
/** | |
* Converts an OpenSSL-compatible string to a cipher params object. | |
* | |
* @param {string} openSSLStr The OpenSSL-compatible string. | |
* | |
* @return {CipherParams} The cipher params object. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var cipherParams = CryptoJS.format.OpenSSL.parse(openSSLString); | |
*/ | |
parse: function (openSSLStr) { | |
var salt; | |
// Parse base64 | |
var ciphertext = Base64.parse(openSSLStr); | |
// Shortcut | |
var ciphertextWords = ciphertext.words; | |
// Test for salt | |
if (ciphertextWords[0] == 0x53616c74 && ciphertextWords[1] == 0x65645f5f) { | |
// Extract salt | |
salt = WordArray.create(ciphertextWords.slice(2, 4)); | |
// Remove salt from ciphertext | |
ciphertextWords.splice(0, 4); | |
ciphertext.sigBytes -= 16; | |
} | |
return CipherParams.create({ ciphertext: ciphertext, salt: salt }); | |
} | |
}; | |
/** | |
* A cipher wrapper that returns ciphertext as a serializable cipher params object. | |
*/ | |
var SerializableCipher = C_lib.SerializableCipher = Base.extend({ | |
/** | |
* Configuration options. | |
* | |
* @property {Formatter} format The formatting strategy to convert cipher param objects to and from a string. Default: OpenSSL | |
*/ | |
cfg: Base.extend({ | |
format: OpenSSLFormatter | |
}), | |
/** | |
* Encrypts a message. | |
* | |
* @param {Cipher} cipher The cipher algorithm to use. | |
* @param {WordArray|string} message The message to encrypt. | |
* @param {WordArray} key The key. | |
* @param {Object} cfg (Optional) The configuration options to use for this operation. | |
* | |
* @return {CipherParams} A cipher params object. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var ciphertextParams = CryptoJS.lib.SerializableCipher.encrypt(CryptoJS.algo.AES, message, key); | |
* var ciphertextParams = CryptoJS.lib.SerializableCipher.encrypt(CryptoJS.algo.AES, message, key, { iv: iv }); | |
* var ciphertextParams = CryptoJS.lib.SerializableCipher.encrypt(CryptoJS.algo.AES, message, key, { iv: iv, format: CryptoJS.format.OpenSSL }); | |
*/ | |
encrypt: function (cipher, message, key, cfg) { | |
// Apply config defaults | |
cfg = this.cfg.extend(cfg); | |
// Encrypt | |
var encryptor = cipher.createEncryptor(key, cfg); | |
var ciphertext = encryptor.finalize(message); | |
// Shortcut | |
var cipherCfg = encryptor.cfg; | |
// Create and return serializable cipher params | |
return CipherParams.create({ | |
ciphertext: ciphertext, | |
key: key, | |
iv: cipherCfg.iv, | |
algorithm: cipher, | |
mode: cipherCfg.mode, | |
padding: cipherCfg.padding, | |
blockSize: cipher.blockSize, | |
formatter: cfg.format | |
}); | |
}, | |
/** | |
* Decrypts serialized ciphertext. | |
* | |
* @param {Cipher} cipher The cipher algorithm to use. | |
* @param {CipherParams|string} ciphertext The ciphertext to decrypt. | |
* @param {WordArray} key The key. | |
* @param {Object} cfg (Optional) The configuration options to use for this operation. | |
* | |
* @return {WordArray} The plaintext. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var plaintext = CryptoJS.lib.SerializableCipher.decrypt(CryptoJS.algo.AES, formattedCiphertext, key, { iv: iv, format: CryptoJS.format.OpenSSL }); | |
* var plaintext = CryptoJS.lib.SerializableCipher.decrypt(CryptoJS.algo.AES, ciphertextParams, key, { iv: iv, format: CryptoJS.format.OpenSSL }); | |
*/ | |
decrypt: function (cipher, ciphertext, key, cfg) { | |
// Apply config defaults | |
cfg = this.cfg.extend(cfg); | |
// Convert string to CipherParams | |
ciphertext = this._parse(ciphertext, cfg.format); | |
// Decrypt | |
var plaintext = cipher.createDecryptor(key, cfg).finalize(ciphertext.ciphertext); | |
return plaintext; | |
}, | |
/** | |
* Converts serialized ciphertext to CipherParams, | |
* else assumed CipherParams already and returns ciphertext unchanged. | |
* | |
* @param {CipherParams|string} ciphertext The ciphertext. | |
* @param {Formatter} format The formatting strategy to use to parse serialized ciphertext. | |
* | |
* @return {CipherParams} The unserialized ciphertext. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var ciphertextParams = CryptoJS.lib.SerializableCipher._parse(ciphertextStringOrParams, format); | |
*/ | |
_parse: function (ciphertext, format) { | |
if (typeof ciphertext == 'string') { | |
return format.parse(ciphertext, this); | |
} else { | |
return ciphertext; | |
} | |
} | |
}); | |
/** | |
* Key derivation function namespace. | |
*/ | |
var C_kdf = C.kdf = {}; | |
/** | |
* OpenSSL key derivation function. | |
*/ | |
var OpenSSLKdf = C_kdf.OpenSSL = { | |
/** | |
* Derives a key and IV from a password. | |
* | |
* @param {string} password The password to derive from. | |
* @param {number} keySize The size in words of the key to generate. | |
* @param {number} ivSize The size in words of the IV to generate. | |
* @param {WordArray|string} salt (Optional) A 64-bit salt to use. If omitted, a salt will be generated randomly. | |
* | |
* @return {CipherParams} A cipher params object with the key, IV, and salt. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var derivedParams = CryptoJS.kdf.OpenSSL.execute('Password', 256/32, 128/32); | |
* var derivedParams = CryptoJS.kdf.OpenSSL.execute('Password', 256/32, 128/32, 'saltsalt'); | |
*/ | |
execute: function (password, keySize, ivSize, salt) { | |
// Generate random salt | |
if (!salt) { | |
salt = WordArray.random(64/8); | |
} | |
// Derive key and IV | |
var key = EvpKDF.create({ keySize: keySize + ivSize }).compute(password, salt); | |
// Separate key and IV | |
var iv = WordArray.create(key.words.slice(keySize), ivSize * 4); | |
key.sigBytes = keySize * 4; | |
// Return params | |
return CipherParams.create({ key: key, iv: iv, salt: salt }); | |
} | |
}; | |
/** | |
* A serializable cipher wrapper that derives the key from a password, | |
* and returns ciphertext as a serializable cipher params object. | |
*/ | |
var PasswordBasedCipher = C_lib.PasswordBasedCipher = SerializableCipher.extend({ | |
/** | |
* Configuration options. | |
* | |
* @property {KDF} kdf The key derivation function to use to generate a key and IV from a password. Default: OpenSSL | |
*/ | |
cfg: SerializableCipher.cfg.extend({ | |
kdf: OpenSSLKdf | |
}), | |
/** | |
* Encrypts a message using a password. | |
* | |
* @param {Cipher} cipher The cipher algorithm to use. | |
* @param {WordArray|string} message The message to encrypt. | |
* @param {string} password The password. | |
* @param {Object} cfg (Optional) The configuration options to use for this operation. | |
* | |
* @return {CipherParams} A cipher params object. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var ciphertextParams = CryptoJS.lib.PasswordBasedCipher.encrypt(CryptoJS.algo.AES, message, 'password'); | |
* var ciphertextParams = CryptoJS.lib.PasswordBasedCipher.encrypt(CryptoJS.algo.AES, message, 'password', { format: CryptoJS.format.OpenSSL }); | |
*/ | |
encrypt: function (cipher, message, password, cfg) { | |
// Apply config defaults | |
cfg = this.cfg.extend(cfg); | |
// Derive key and other params | |
var derivedParams = cfg.kdf.execute(password, cipher.keySize, cipher.ivSize); | |
// Add IV to config | |
cfg.iv = derivedParams.iv; | |
// Encrypt | |
var ciphertext = SerializableCipher.encrypt.call(this, cipher, message, derivedParams.key, cfg); | |
// Mix in derived params | |
ciphertext.mixIn(derivedParams); | |
return ciphertext; | |
}, | |
/** | |
* Decrypts serialized ciphertext using a password. | |
* | |
* @param {Cipher} cipher The cipher algorithm to use. | |
* @param {CipherParams|string} ciphertext The ciphertext to decrypt. | |
* @param {string} password The password. | |
* @param {Object} cfg (Optional) The configuration options to use for this operation. | |
* | |
* @return {WordArray} The plaintext. | |
* | |
* @static | |
* | |
* @example | |
* | |
* var plaintext = CryptoJS.lib.PasswordBasedCipher.decrypt(CryptoJS.algo.AES, formattedCiphertext, 'password', { format: CryptoJS.format.OpenSSL }); | |
* var plaintext = CryptoJS.lib.PasswordBasedCipher.decrypt(CryptoJS.algo.AES, ciphertextParams, 'password', { format: CryptoJS.format.OpenSSL }); | |
*/ | |
decrypt: function (cipher, ciphertext, password, cfg) { | |
// Apply config defaults | |
cfg = this.cfg.extend(cfg); | |
// Convert string to CipherParams | |
ciphertext = this._parse(ciphertext, cfg.format); | |
// Derive key and other params | |
var derivedParams = cfg.kdf.execute(password, cipher.keySize, cipher.ivSize, ciphertext.salt); | |
// Add IV to config | |
cfg.iv = derivedParams.iv; | |
// Decrypt | |
var plaintext = SerializableCipher.decrypt.call(this, cipher, ciphertext, derivedParams.key, cfg); | |
return plaintext; | |
} | |
}); | |
}()); | |
})); |