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Cable-Desktop/js/webcrypto.js

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Build CryptoJS components into webcrypto.js We only depend on cryptojs for this webcrypto polyfill, so let Grunt concatenate them into one file. The reference in the getString helper isn't needed since we use the built in string converters on CryptoJS's word arrays.
2014-11-10 04:35:50 +01:00
;(function(){
/**
* CryptoJS core components.
*/
var CryptoJS = CryptoJS || (function (Math, undefined) {
/**
* CryptoJS namespace.
*/
var C = {};
/**
* Library namespace.
*/
var C_lib = C.lib = {};
/**
* Base object for prototypal inheritance.
*/
var Base = C_lib.Base = (function () {
function F() {}
return {
/**
* Creates a new object that inherits from this object.
*
* @param {Object} overrides Properties to copy into the new object.
*
* @return {Object} The new object.
*
* @static
*
* @example
*
* var MyType = CryptoJS.lib.Base.extend({
* field: 'value',
*
* method: function () {
* }
* });
*/
extend: function (overrides) {
// Spawn
F.prototype = this;
var subtype = new F();
// Augment
if (overrides) {
subtype.mixIn(overrides);
}
// Create default initializer
if (!subtype.hasOwnProperty('init')) {
subtype.init = function () {
subtype.$super.init.apply(this, arguments);
};
}
// Initializer's prototype is the subtype object
subtype.init.prototype = subtype;
// Reference supertype
subtype.$super = this;
return subtype;
},
/**
* Extends this object and runs the init method.
* Arguments to create() will be passed to init().
*
* @return {Object} The new object.
*
* @static
*
* @example
*
* var instance = MyType.create();
*/
create: function () {
var instance = this.extend();
instance.init.apply(instance, arguments);
return instance;
},
/**
* Initializes a newly created object.
* Override this method to add some logic when your objects are created.
*
* @example
*
* var MyType = CryptoJS.lib.Base.extend({
* init: function () {
* // ...
* }
* });
*/
init: function () {
},
/**
* Copies properties into this object.
*
* @param {Object} properties The properties to mix in.
*
* @example
*
* MyType.mixIn({
* field: 'value'
* });
*/
mixIn: function (properties) {
for (var propertyName in properties) {
if (properties.hasOwnProperty(propertyName)) {
this[propertyName] = properties[propertyName];
}
}
// IE won't copy toString using the loop above
if (properties.hasOwnProperty('toString')) {
this.toString = properties.toString;
}
},
/**
* Creates a copy of this object.
*
* @return {Object} The clone.
*
* @example
*
* var clone = instance.clone();
*/
clone: function () {
return this.init.prototype.extend(this);
}
};
}());
/**
* An array of 32-bit words.
*
* @property {Array} words The array of 32-bit words.
* @property {number} sigBytes The number of significant bytes in this word array.
*/
var WordArray = C_lib.WordArray = Base.extend({
/**
* Initializes a newly created word array.
*
* @param {Array} words (Optional) An array of 32-bit words.
* @param {number} sigBytes (Optional) The number of significant bytes in the words.
*
* @example
*
* var wordArray = CryptoJS.lib.WordArray.create();
* var wordArray = CryptoJS.lib.WordArray.create([0x00010203, 0x04050607]);
* var wordArray = CryptoJS.lib.WordArray.create([0x00010203, 0x04050607], 6);
*/
init: function (words, sigBytes) {
words = this.words = words || [];
if (sigBytes != undefined) {
this.sigBytes = sigBytes;
} else {
this.sigBytes = words.length * 4;
}
},
/**
* Converts this word array to a string.
*
* @param {Encoder} encoder (Optional) The encoding strategy to use. Default: CryptoJS.enc.Hex
*
* @return {string} The stringified word array.
*
* @example
*
* var string = wordArray + '';
* var string = wordArray.toString();
* var string = wordArray.toString(CryptoJS.enc.Utf8);
*/
toString: function (encoder) {
return (encoder || Hex).stringify(this);
},
/**
* Concatenates a word array to this word array.
*
* @param {WordArray} wordArray The word array to append.
*
* @return {WordArray} This word array.
*
* @example
*
* wordArray1.concat(wordArray2);
*/
concat: function (wordArray) {
// Shortcuts
var thisWords = this.words;
var thatWords = wordArray.words;
var thisSigBytes = this.sigBytes;
var thatSigBytes = wordArray.sigBytes;
// Clamp excess bits
this.clamp();
// Concat
if (thisSigBytes % 4) {
// Copy one byte at a time
for (var i = 0; i < thatSigBytes; i++) {
var thatByte = (thatWords[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
thisWords[(thisSigBytes + i) >>> 2] |= thatByte << (24 - ((thisSigBytes + i) % 4) * 8);
}
} else if (thatWords.length > 0xffff) {
// Copy one word at a time
for (var i = 0; i < thatSigBytes; i += 4) {
thisWords[(thisSigBytes + i) >>> 2] = thatWords[i >>> 2];
}
} else {
// Copy all words at once
thisWords.push.apply(thisWords, thatWords);
}
this.sigBytes += thatSigBytes;
// Chainable
return this;
},
/**
* Removes insignificant bits.
*
* @example
*
* wordArray.clamp();
*/
clamp: function () {
// Shortcuts
var words = this.words;
var sigBytes = this.sigBytes;
// Clamp
words[sigBytes >>> 2] &= 0xffffffff << (32 - (sigBytes % 4) * 8);
words.length = Math.ceil(sigBytes / 4);
},
/**
* Creates a copy of this word array.
*
* @return {WordArray} The clone.
*
* @example
*
* var clone = wordArray.clone();
*/
clone: function () {
var clone = Base.clone.call(this);
clone.words = this.words.slice(0);
return clone;
},
/**
* Creates a word array filled with random bytes.
*
* @param {number} nBytes The number of random bytes to generate.
*
* @return {WordArray} The random word array.
*
* @static
*
* @example
*
* var wordArray = CryptoJS.lib.WordArray.random(16);
*/
random: function (nBytes) {
var words = [];
for (var i = 0; i < nBytes; i += 4) {
words.push((Math.random() * 0x100000000) | 0);
}
return new WordArray.init(words, nBytes);
}
});
/**
* Encoder namespace.
*/
var C_enc = C.enc = {};
/**
* Hex encoding strategy.
*/
var Hex = C_enc.Hex = {
/**
* Converts a word array to a hex string.
*
* @param {WordArray} wordArray The word array.
*
* @return {string} The hex string.
*
* @static
*
* @example
*
* var hexString = CryptoJS.enc.Hex.stringify(wordArray);
*/
stringify: function (wordArray) {
// Shortcuts
var words = wordArray.words;
var sigBytes = wordArray.sigBytes;
// Convert
var hexChars = [];
for (var i = 0; i < sigBytes; i++) {
var bite = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
hexChars.push((bite >>> 4).toString(16));
hexChars.push((bite & 0x0f).toString(16));
}
return hexChars.join('');
},
/**
* Converts a hex string to a word array.
*
* @param {string} hexStr The hex string.
*
* @return {WordArray} The word array.
*
* @static
*
* @example
*
* var wordArray = CryptoJS.enc.Hex.parse(hexString);
*/
parse: function (hexStr) {
// Shortcut
var hexStrLength = hexStr.length;
// Convert
var words = [];
for (var i = 0; i < hexStrLength; i += 2) {
words[i >>> 3] |= parseInt(hexStr.substr(i, 2), 16) << (24 - (i % 8) * 4);
}
return new WordArray.init(words, hexStrLength / 2);
}
};
/**
* Latin1 encoding strategy.
*/
var Latin1 = C_enc.Latin1 = {
/**
* Converts a word array to a Latin1 string.
*
* @param {WordArray} wordArray The word array.
*
* @return {string} The Latin1 string.
*
* @static
*
* @example
*
* var latin1String = CryptoJS.enc.Latin1.stringify(wordArray);
*/
stringify: function (wordArray) {
// Shortcuts
var words = wordArray.words;
var sigBytes = wordArray.sigBytes;
// Convert
var latin1Chars = [];
for (var i = 0; i < sigBytes; i++) {
var bite = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
latin1Chars.push(String.fromCharCode(bite));
}
return latin1Chars.join('');
},
/**
* Converts a Latin1 string to a word array.
*
* @param {string} latin1Str The Latin1 string.
*
* @return {WordArray} The word array.
*
* @static
*
* @example
*
* var wordArray = CryptoJS.enc.Latin1.parse(latin1String);
*/
parse: function (latin1Str) {
// Shortcut
var latin1StrLength = latin1Str.length;
// Convert
var words = [];
for (var i = 0; i < latin1StrLength; i++) {
words[i >>> 2] |= (latin1Str.charCodeAt(i) & 0xff) << (24 - (i % 4) * 8);
}
return new WordArray.init(words, latin1StrLength);
}
};
/**
* UTF-8 encoding strategy.
*/
var Utf8 = C_enc.Utf8 = {
/**
* Converts a word array to a UTF-8 string.
*
* @param {WordArray} wordArray The word array.
*
* @return {string} The UTF-8 string.
*
* @static
*
* @example
*
* var utf8String = CryptoJS.enc.Utf8.stringify(wordArray);
*/
stringify: function (wordArray) {
try {
return decodeURIComponent(escape(Latin1.stringify(wordArray)));
} catch (e) {
throw new Error('Malformed UTF-8 data');
}
},
/**
* Converts a UTF-8 string to a word array.
*
* @param {string} utf8Str The UTF-8 string.
*
* @return {WordArray} The word array.
*
* @static
*
* @example
*
* var wordArray = CryptoJS.enc.Utf8.parse(utf8String);
*/
parse: function (utf8Str) {
return Latin1.parse(unescape(encodeURIComponent(utf8Str)));
}
};
/**
* Abstract buffered block algorithm template.
*
* The property blockSize must be implemented in a concrete subtype.
*
* @property {number} _minBufferSize The number of blocks that should be kept unprocessed in the buffer. Default: 0
*/
var BufferedBlockAlgorithm = C_lib.BufferedBlockAlgorithm = Base.extend({
/**
* Resets this block algorithm's data buffer to its initial state.
*
* @example
*
* bufferedBlockAlgorithm.reset();
*/
reset: function () {
// Initial values
this._data = new WordArray.init();
this._nDataBytes = 0;
},
/**
* Adds new data to this block algorithm's buffer.
*
* @param {WordArray|string} data The data to append. Strings are converted to a WordArray using UTF-8.
*
* @example
*
* bufferedBlockAlgorithm._append('data');
* bufferedBlockAlgorithm._append(wordArray);
*/
_append: function (data) {
// Convert string to WordArray, else assume WordArray already
if (typeof data == 'string') {
data = Utf8.parse(data);
}
// Append
this._data.concat(data);
this._nDataBytes += data.sigBytes;
},
/**
* Processes available data blocks.
*
* This method invokes _doProcessBlock(offset), which must be implemented by a concrete subtype.
*
* @param {boolean} doFlush Whether all blocks and partial blocks should be processed.
*
* @return {WordArray} The processed data.
*
* @example
*
* var processedData = bufferedBlockAlgorithm._process();
* var processedData = bufferedBlockAlgorithm._process(!!'flush');
*/
_process: function (doFlush) {
// Shortcuts
var data = this._data;
var dataWords = data.words;
var dataSigBytes = data.sigBytes;
var blockSize = this.blockSize;
var blockSizeBytes = blockSize * 4;
// Count blocks ready
var nBlocksReady = dataSigBytes / blockSizeBytes;
if (doFlush) {
// Round up to include partial blocks
nBlocksReady = Math.ceil(nBlocksReady);
} else {
// Round down to include only full blocks,
// less the number of blocks that must remain in the buffer
nBlocksReady = Math.max((nBlocksReady | 0) - this._minBufferSize, 0);
}
// Count words ready
var nWordsReady = nBlocksReady * blockSize;
// Count bytes ready
var nBytesReady = Math.min(nWordsReady * 4, dataSigBytes);
// Process blocks
if (nWordsReady) {
for (var offset = 0; offset < nWordsReady; offset += blockSize) {
// Perform concrete-algorithm logic
this._doProcessBlock(dataWords, offset);
}
// Remove processed words
var processedWords = dataWords.splice(0, nWordsReady);
data.sigBytes -= nBytesReady;
}
// Return processed words
return new WordArray.init(processedWords, nBytesReady);
},
/**
* Creates a copy of this object.
*
* @return {Object} The clone.
*
* @example
*
* var clone = bufferedBlockAlgorithm.clone();
*/
clone: function () {
var clone = Base.clone.call(this);
clone._data = this._data.clone();
return clone;
},
_minBufferSize: 0
});
/**
* Abstract hasher template.
*
* @property {number} blockSize The number of 32-bit words this hasher operates on. Default: 16 (512 bits)
*/
var Hasher = C_lib.Hasher = BufferedBlockAlgorithm.extend({
/**
* Configuration options.
*/
cfg: Base.extend(),
/**
* Initializes a newly created hasher.
*
* @param {Object} cfg (Optional) The configuration options to use for this hash computation.
*
* @example
*
* var hasher = CryptoJS.algo.SHA256.create();
*/
init: function (cfg) {
// Apply config defaults
this.cfg = this.cfg.extend(cfg);
// Set initial values
this.reset();
},
/**
* Resets this hasher to its initial state.
*
* @example
*
* hasher.reset();
*/
reset: function () {
// Reset data buffer
BufferedBlockAlgorithm.reset.call(this);
// Perform concrete-hasher logic
this._doReset();
},
/**
* Updates this hasher with a message.
*
* @param {WordArray|string} messageUpdate The message to append.
*
* @return {Hasher} This hasher.
*
* @example
*
* hasher.update('message');
* hasher.update(wordArray);
*/
update: function (messageUpdate) {
// Append
this._append(messageUpdate);
// Update the hash
this._process();
// Chainable
return this;
},
/**
* Finalizes the hash computation.
* Note that the finalize operation is effectively a destructive, read-once operation.
*
* @param {WordArray|string} messageUpdate (Optional) A final message update.
*
* @return {WordArray} The hash.
*
* @example
*
* var hash = hasher.finalize();
* var hash = hasher.finalize('message');
* var hash = hasher.finalize(wordArray);
*/
finalize: function (messageUpdate) {
// Final message update
if (messageUpdate) {
this._append(messageUpdate);
}
// Perform concrete-hasher logic
var hash = this._doFinalize();
return hash;
},
blockSize: 512/32,
/**
* Creates a shortcut function to a hasher's object interface.
*
* @param {Hasher} hasher The hasher to create a helper for.
*
* @return {Function} The shortcut function.
*
* @static
*
* @example
*
* var SHA256 = CryptoJS.lib.Hasher._createHelper(CryptoJS.algo.SHA256);
*/
_createHelper: function (hasher) {
return function (message, cfg) {
return new hasher.init(cfg).finalize(message);
};
},
/**
* Creates a shortcut function to the HMAC's object interface.
*
* @param {Hasher} hasher The hasher to use in this HMAC helper.
*
* @return {Function} The shortcut function.
*
* @static
*
* @example
*
* var HmacSHA256 = CryptoJS.lib.Hasher._createHmacHelper(CryptoJS.algo.SHA256);
*/
_createHmacHelper: function (hasher) {
return function (message, key) {
return new C_algo.HMAC.init(hasher, key).finalize(message);
};
}
});
/**
* Algorithm namespace.
*/
var C_algo = C.algo = {};
return C;
}(Math));
(function (Math) {
// Shortcuts
var C = CryptoJS;
var C_lib = C.lib;
var WordArray = C_lib.WordArray;
var Hasher = C_lib.Hasher;
var C_algo = C.algo;
// Initialization and round constants tables
var H = [];
var K = [];
// Compute constants
(function () {
function isPrime(n) {
var sqrtN = Math.sqrt(n);
for (var factor = 2; factor <= sqrtN; factor++) {
if (!(n % factor)) {
return false;
}
}
return true;
}
function getFractionalBits(n) {
return ((n - (n | 0)) * 0x100000000) | 0;
}
var n = 2;
var nPrime = 0;
while (nPrime < 64) {
if (isPrime(n)) {
if (nPrime < 8) {
H[nPrime] = getFractionalBits(Math.pow(n, 1 / 2));
}
K[nPrime] = getFractionalBits(Math.pow(n, 1 / 3));
nPrime++;
}
n++;
}
}());
// Reusable object
var W = [];
/**
* SHA-256 hash algorithm.
*/
var SHA256 = C_algo.SHA256 = Hasher.extend({
_doReset: function () {
this._hash = new WordArray.init(H.slice(0));
},
_doProcessBlock: function (M, offset) {
// Shortcut
var H = this._hash.words;
// Working variables
var a = H[0];
var b = H[1];
var c = H[2];
var d = H[3];
var e = H[4];
var f = H[5];
var g = H[6];
var h = H[7];
// Computation
for (var i = 0; i < 64; i++) {
if (i < 16) {
W[i] = M[offset + i] | 0;
} else {
var gamma0x = W[i - 15];
var gamma0 = ((gamma0x << 25) | (gamma0x >>> 7)) ^
((gamma0x << 14) | (gamma0x >>> 18)) ^
(gamma0x >>> 3);
var gamma1x = W[i - 2];
var gamma1 = ((gamma1x << 15) | (gamma1x >>> 17)) ^
((gamma1x << 13) | (gamma1x >>> 19)) ^
(gamma1x >>> 10);
W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16];
}
var ch = (e & f) ^ (~e & g);
var maj = (a & b) ^ (a & c) ^ (b & c);
var sigma0 = ((a << 30) | (a >>> 2)) ^ ((a << 19) | (a >>> 13)) ^ ((a << 10) | (a >>> 22));
var sigma1 = ((e << 26) | (e >>> 6)) ^ ((e << 21) | (e >>> 11)) ^ ((e << 7) | (e >>> 25));
var t1 = h + sigma1 + ch + K[i] + W[i];
var t2 = sigma0 + maj;
h = g;
g = f;
f = e;
e = (d + t1) | 0;
d = c;
c = b;
b = a;
a = (t1 + t2) | 0;
}
// Intermediate hash value
H[0] = (H[0] + a) | 0;
H[1] = (H[1] + b) | 0;
H[2] = (H[2] + c) | 0;
H[3] = (H[3] + d) | 0;
H[4] = (H[4] + e) | 0;
H[5] = (H[5] + f) | 0;
H[6] = (H[6] + g) | 0;
H[7] = (H[7] + h) | 0;
},
_doFinalize: function () {
// Shortcuts
var data = this._data;
var dataWords = data.words;
var nBitsTotal = this._nDataBytes * 8;
var nBitsLeft = data.sigBytes * 8;
// Add padding
dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = Math.floor(nBitsTotal / 0x100000000);
dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 15] = nBitsTotal;
data.sigBytes = dataWords.length * 4;
// Hash final blocks
this._process();
// Return final computed hash
return this._hash;
},
clone: function () {
var clone = Hasher.clone.call(this);
clone._hash = this._hash.clone();
return clone;
}
});
/**
* Shortcut function to the hasher's object interface.
*
* @param {WordArray|string} message The message to hash.
*
* @return {WordArray} The hash.
*
* @static
*
* @example
*
* var hash = CryptoJS.SHA256('message');
* var hash = CryptoJS.SHA256(wordArray);
*/
C.SHA256 = Hasher._createHelper(SHA256);
/**
* Shortcut function to the HMAC's object interface.
*
* @param {WordArray|string} message The message to hash.
* @param {WordArray|string} key The secret key.
*
* @return {WordArray} The HMAC.
*
* @static
*
* @example
*
* var hmac = CryptoJS.HmacSHA256(message, key);
*/
C.HmacSHA256 = Hasher._createHmacHelper(SHA256);
}(Math));
(function () {
// Shortcuts
var C = CryptoJS;
var C_lib = C.lib;
var Base = C_lib.Base;
var C_enc = C.enc;
var Utf8 = C_enc.Utf8;
var C_algo = C.algo;
/**
* HMAC algorithm.
*/
var HMAC = C_algo.HMAC = Base.extend({
/**
* Initializes a newly created HMAC.
*
* @param {Hasher} hasher The hash algorithm to use.
* @param {WordArray|string} key The secret key.
*
* @example
*
* var hmacHasher = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, key);
*/
init: function (hasher, key) {
// Init hasher
hasher = this._hasher = new hasher.init();
// Convert string to WordArray, else assume WordArray already
if (typeof key == 'string') {
key = Utf8.parse(key);
}
// Shortcuts
var hasherBlockSize = hasher.blockSize;
var hasherBlockSizeBytes = hasherBlockSize * 4;
// Allow arbitrary length keys
if (key.sigBytes > hasherBlockSizeBytes) {
key = hasher.finalize(key);
}
// Clamp excess bits
key.clamp();
// Clone key for inner and outer pads
var oKey = this._oKey = key.clone();
var iKey = this._iKey = key.clone();
// Shortcuts
var oKeyWords = oKey.words;
var iKeyWords = iKey.words;
// XOR keys with pad constants
for (var i = 0; i < hasherBlockSize; i++) {
oKeyWords[i] ^= 0x5c5c5c5c;
iKeyWords[i] ^= 0x36363636;
}
oKey.sigBytes = iKey.sigBytes = hasherBlockSizeBytes;
// Set initial values
this.reset();
},
/**
* Resets this HMAC to its initial state.
*
* @example
*
* hmacHasher.reset();
*/
reset: function () {
// Shortcut
var hasher = this._hasher;
// Reset
hasher.reset();
hasher.update(this._iKey);
},
/**
* Updates this HMAC with a message.
*
* @param {WordArray|string} messageUpdate The message to append.
*
* @return {HMAC} This HMAC instance.
*
* @example
*
* hmacHasher.update('message');
* hmacHasher.update(wordArray);
*/
update: function (messageUpdate) {
this._hasher.update(messageUpdate);
// Chainable
return this;
},
/**
* Finalizes the HMAC computation.
* Note that the finalize operation is effectively a destructive, read-once operation.
*
* @param {WordArray|string} messageUpdate (Optional) A final message update.
*
* @return {WordArray} The HMAC.
*
* @example
*
* var hmac = hmacHasher.finalize();
* var hmac = hmacHasher.finalize('message');
* var hmac = hmacHasher.finalize(wordArray);
*/
finalize: function (messageUpdate) {
// Shortcut
var hasher = this._hasher;
// Compute HMAC
var innerHash = hasher.finalize(messageUpdate);
hasher.reset();
var hmac = hasher.finalize(this._oKey.clone().concat(innerHash));
return hmac;
}
});
}());
(function () {
// Shortcuts
var C = CryptoJS;
var C_lib = C.lib;
var WordArray = C_lib.WordArray;
var C_enc = C.enc;
/**
* Base64 encoding strategy.
*/
var Base64 = C_enc.Base64 = {
/**
* Converts a word array to a Base64 string.
*
* @param {WordArray} wordArray The word array.
*
* @return {string} The Base64 string.
*
* @static
*
* @example
*
* var base64String = CryptoJS.enc.Base64.stringify(wordArray);
*/
stringify: function (wordArray) {
// Shortcuts
var words = wordArray.words;
var sigBytes = wordArray.sigBytes;
var map = this._map;
// Clamp excess bits
wordArray.clamp();
// Convert
var base64Chars = [];
for (var i = 0; i < sigBytes; i += 3) {
var byte1 = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
var byte2 = (words[(i + 1) >>> 2] >>> (24 - ((i + 1) % 4) * 8)) & 0xff;
var byte3 = (words[(i + 2) >>> 2] >>> (24 - ((i + 2) % 4) * 8)) & 0xff;
var triplet = (byte1 << 16) | (byte2 << 8) | byte3;
for (var j = 0; (j < 4) && (i + j * 0.75 < sigBytes); j++) {
base64Chars.push(map.charAt((triplet >>> (6 * (3 - j))) & 0x3f));
}
}
// Add padding
var paddingChar = map.charAt(64);
if (paddingChar) {
while (base64Chars.length % 4) {
base64Chars.push(paddingChar);
}
}
return base64Chars.join('');
},
/**
* Converts a Base64 string to a word array.
*
* @param {string} base64Str The Base64 string.
*
* @return {WordArray} The word array.
*
* @static
*
* @example
*
* var wordArray = CryptoJS.enc.Base64.parse(base64String);
*/
parse: function (base64Str) {
// Shortcuts
var base64StrLength = base64Str.length;
var map = this._map;
// Ignore padding
var paddingChar = map.charAt(64);
if (paddingChar) {
var paddingIndex = base64Str.indexOf(paddingChar);
if (paddingIndex != -1) {
base64StrLength = paddingIndex;
}
}
// Convert
var words = [];
var nBytes = 0;
for (var i = 0; i < base64StrLength; i++) {
if (i % 4) {
var bits1 = map.indexOf(base64Str.charAt(i - 1)) << ((i % 4) * 2);
var bits2 = map.indexOf(base64Str.charAt(i)) >>> (6 - (i % 4) * 2);
words[nBytes >>> 2] |= (bits1 | bits2) << (24 - (nBytes % 4) * 8);
nBytes++;
}
}
return WordArray.create(words, nBytes);
},
_map: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='
};
}());
(function (Math) {
// Shortcuts
var C = CryptoJS;
var C_lib = C.lib;
var WordArray = C_lib.WordArray;
var Hasher = C_lib.Hasher;
var C_algo = C.algo;
// Constants table
var T = [];
// Compute constants
(function () {
for (var i = 0; i < 64; i++) {
T[i] = (Math.abs(Math.sin(i + 1)) * 0x100000000) | 0;
}
}());
/**
* MD5 hash algorithm.
*/
var MD5 = C_algo.MD5 = Hasher.extend({
_doReset: function () {
this._hash = new WordArray.init([
0x67452301, 0xefcdab89,
0x98badcfe, 0x10325476
]);
},
_doProcessBlock: function (M, offset) {
// Swap endian
for (var i = 0; i < 16; i++) {
// Shortcuts
var offset_i = offset + i;
var M_offset_i = M[offset_i];
M[offset_i] = (
(((M_offset_i << 8) | (M_offset_i >>> 24)) & 0x00ff00ff) |
(((M_offset_i << 24) | (M_offset_i >>> 8)) & 0xff00ff00)
);
}
// Shortcuts
var H = this._hash.words;
var M_offset_0 = M[offset + 0];
var M_offset_1 = M[offset + 1];
var M_offset_2 = M[offset + 2];
var M_offset_3 = M[offset + 3];
var M_offset_4 = M[offset + 4];
var M_offset_5 = M[offset + 5];
var M_offset_6 = M[offset + 6];
var M_offset_7 = M[offset + 7];
var M_offset_8 = M[offset + 8];
var M_offset_9 = M[offset + 9];
var M_offset_10 = M[offset + 10];
var M_offset_11 = M[offset + 11];
var M_offset_12 = M[offset + 12];
var M_offset_13 = M[offset + 13];
var M_offset_14 = M[offset + 14];
var M_offset_15 = M[offset + 15];
// Working varialbes
var a = H[0];
var b = H[1];
var c = H[2];
var d = H[3];
// Computation
a = FF(a, b, c, d, M_offset_0, 7, T[0]);
d = FF(d, a, b, c, M_offset_1, 12, T[1]);
c = FF(c, d, a, b, M_offset_2, 17, T[2]);
b = FF(b, c, d, a, M_offset_3, 22, T[3]);
a = FF(a, b, c, d, M_offset_4, 7, T[4]);
d = FF(d, a, b, c, M_offset_5, 12, T[5]);
c = FF(c, d, a, b, M_offset_6, 17, T[6]);
b = FF(b, c, d, a, M_offset_7, 22, T[7]);
a = FF(a, b, c, d, M_offset_8, 7, T[8]);
d = FF(d, a, b, c, M_offset_9, 12, T[9]);
c = FF(c, d, a, b, M_offset_10, 17, T[10]);
b = FF(b, c, d, a, M_offset_11, 22, T[11]);
a = FF(a, b, c, d, M_offset_12, 7, T[12]);
d = FF(d, a, b, c, M_offset_13, 12, T[13]);
c = FF(c, d, a, b, M_offset_14, 17, T[14]);
b = FF(b, c, d, a, M_offset_15, 22, T[15]);
a = GG(a, b, c, d, M_offset_1, 5, T[16]);
d = GG(d, a, b, c, M_offset_6, 9, T[17]);
c = GG(c, d, a, b, M_offset_11, 14, T[18]);
b = GG(b, c, d, a, M_offset_0, 20, T[19]);
a = GG(a, b, c, d, M_offset_5, 5, T[20]);
d = GG(d, a, b, c, M_offset_10, 9, T[21]);
c = GG(c, d, a, b, M_offset_15, 14, T[22]);
b = GG(b, c, d, a, M_offset_4, 20, T[23]);
a = GG(a, b, c, d, M_offset_9, 5, T[24]);
d = GG(d, a, b, c, M_offset_14, 9, T[25]);
c = GG(c, d, a, b, M_offset_3, 14, T[26]);
b = GG(b, c, d, a, M_offset_8, 20, T[27]);
a = GG(a, b, c, d, M_offset_13, 5, T[28]);
d = GG(d, a, b, c, M_offset_2, 9, T[29]);
c = GG(c, d, a, b, M_offset_7, 14, T[30]);
b = GG(b, c, d, a, M_offset_12, 20, T[31]);
a = HH(a, b, c, d, M_offset_5, 4, T[32]);
d = HH(d, a, b, c, M_offset_8, 11, T[33]);
c = HH(c, d, a, b, M_offset_11, 16, T[34]);
b = HH(b, c, d, a, M_offset_14, 23, T[35]);
a = HH(a, b, c, d, M_offset_1, 4, T[36]);
d = HH(d, a, b, c, M_offset_4, 11, T[37]);
c = HH(c, d, a, b, M_offset_7, 16, T[38]);
b = HH(b, c, d, a, M_offset_10, 23, T[39]);
a = HH(a, b, c, d, M_offset_13, 4, T[40]);
d = HH(d, a, b, c, M_offset_0, 11, T[41]);
c = HH(c, d, a, b, M_offset_3, 16, T[42]);
b = HH(b, c, d, a, M_offset_6, 23, T[43]);
a = HH(a, b, c, d, M_offset_9, 4, T[44]);
d = HH(d, a, b, c, M_offset_12, 11, T[45]);
c = HH(c, d, a, b, M_offset_15, 16, T[46]);
b = HH(b, c, d, a, M_offset_2, 23, T[47]);
a = II(a, b, c, d, M_offset_0, 6, T[48]);
d = II(d, a, b, c, M_offset_7, 10, T[49]);
c = II(c, d, a, b, M_offset_14, 15, T[50]);
b = II(b, c, d, a, M_offset_5, 21, T[51]);
a = II(a, b, c, d, M_offset_12, 6, T[52]);
d = II(d, a, b, c, M_offset_3, 10, T[53]);
c = II(c, d, a, b, M_offset_10, 15, T[54]);
b = II(b, c, d, a, M_offset_1, 21, T[55]);
a = II(a, b, c, d, M_offset_8, 6, T[56]);
d = II(d, a, b, c, M_offset_15, 10, T[57]);
c = II(c, d, a, b, M_offset_6, 15, T[58]);
b = II(b, c, d, a, M_offset_13, 21, T[59]);
a = II(a, b, c, d, M_offset_4, 6, T[60]);
d = II(d, a, b, c, M_offset_11, 10, T[61]);
c = II(c, d, a, b, M_offset_2, 15, T[62]);
b = II(b, c, d, a, M_offset_9, 21, T[63]);
// Intermediate hash value
H[0] = (H[0] + a) | 0;
H[1] = (H[1] + b) | 0;
H[2] = (H[2] + c) | 0;
H[3] = (H[3] + d) | 0;
},
_doFinalize: function () {
// Shortcuts
var data = this._data;
var dataWords = data.words;
var nBitsTotal = this._nDataBytes * 8;
var nBitsLeft = data.sigBytes * 8;
// Add padding
dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
var nBitsTotalH = Math.floor(nBitsTotal / 0x100000000);
var nBitsTotalL = nBitsTotal;
dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 15] = (
(((nBitsTotalH << 8) | (nBitsTotalH >>> 24)) & 0x00ff00ff) |
(((nBitsTotalH << 24) | (nBitsTotalH >>> 8)) & 0xff00ff00)
);
dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
(((nBitsTotalL << 8) | (nBitsTotalL >>> 24)) & 0x00ff00ff) |
(((nBitsTotalL << 24) | (nBitsTotalL >>> 8)) & 0xff00ff00)
);
data.sigBytes = (dataWords.length + 1) * 4;
// Hash final blocks
this._process();
// Shortcuts
var hash = this._hash;
var H = hash.words;
// Swap endian
for (var i = 0; i < 4; i++) {
// Shortcut
var H_i = H[i];
H[i] = (((H_i << 8) | (H_i >>> 24)) & 0x00ff00ff) |
(((H_i << 24) | (H_i >>> 8)) & 0xff00ff00);
}
// Return final computed hash
return hash;
},
clone: function () {
var clone = Hasher.clone.call(this);
clone._hash = this._hash.clone();
return clone;
}
});
function FF(a, b, c, d, x, s, t) {
var n = a + ((b & c) | (~b & d)) + x + t;
return ((n << s) | (n >>> (32 - s))) + b;
}
function GG(a, b, c, d, x, s, t) {
var n = a + ((b & d) | (c & ~d)) + x + t;
return ((n << s) | (n >>> (32 - s))) + b;
}
function HH(a, b, c, d, x, s, t) {
var n = a + (b ^ c ^ d) + x + t;
return ((n << s) | (n >>> (32 - s))) + b;
}
function II(a, b, c, d, x, s, t) {
var n = a + (c ^ (b | ~d)) + x + t;
return ((n << s) | (n >>> (32 - s))) + b;
}
/**
* Shortcut function to the hasher's object interface.
*
* @param {WordArray|string} message The message to hash.
*
* @return {WordArray} The hash.
*
* @static
*
* @example
*
* var hash = CryptoJS.MD5('message');
* var hash = CryptoJS.MD5(wordArray);
*/
C.MD5 = Hasher._createHelper(MD5);
/**
* Shortcut function to the HMAC's object interface.
*
* @param {WordArray|string} message The message to hash.
* @param {WordArray|string} key The secret key.
*
* @return {WordArray} The HMAC.
*
* @static
*
* @example
*
* var hmac = CryptoJS.HmacMD5(message, key);
*/
C.HmacMD5 = Hasher._createHmacHelper(MD5);
}(Math));
(function () {
// Shortcuts
var C = CryptoJS;
var C_lib = C.lib;
var Base = C_lib.Base;
var WordArray = C_lib.WordArray;
var C_algo = C.algo;
var MD5 = C_algo.MD5;
/**
* This key derivation function is meant to conform with EVP_BytesToKey.
* www.openssl.org/docs/crypto/EVP_BytesToKey.html
*/
var EvpKDF = C_algo.EvpKDF = Base.extend({
/**
* Configuration options.
*
* @property {number} keySize The key size in words to generate. Default: 4 (128 bits)
* @property {Hasher} hasher The hash algorithm to use. Default: MD5
* @property {number} iterations The number of iterations to perform. Default: 1
*/
cfg: Base.extend({
keySize: 128/32,
hasher: MD5,
iterations: 1
}),
/**
* Initializes a newly created key derivation function.
*
* @param {Object} cfg (Optional) The configuration options to use for the derivation.
*
* @example
*
* var kdf = CryptoJS.algo.EvpKDF.create();
* var kdf = CryptoJS.algo.EvpKDF.create({ keySize: 8 });
* var kdf = CryptoJS.algo.EvpKDF.create({ keySize: 8, iterations: 1000 });
*/
init: function (cfg) {
this.cfg = this.cfg.extend(cfg);
},
/**
* Derives a key from a password.
*
* @param {WordArray|string} password The password.
* @param {WordArray|string} salt A salt.
*
* @return {WordArray} The derived key.
*
* @example
*
* var key = kdf.compute(password, salt);
*/
compute: function (password, salt) {
// Shortcut
var cfg = this.cfg;
// Init hasher
var hasher = cfg.hasher.create();
// Initial values
var derivedKey = WordArray.create();
// Shortcuts
var derivedKeyWords = derivedKey.words;
var keySize = cfg.keySize;
var iterations = cfg.iterations;
// Generate key
while (derivedKeyWords.length < keySize) {
if (block) {
hasher.update(block);
}
var block = hasher.update(password).finalize(salt);
hasher.reset();
// Iterations
for (var i = 1; i < iterations; i++) {
block = hasher.finalize(block);
hasher.reset();
}
derivedKey.concat(block);
}
derivedKey.sigBytes = keySize * 4;
return derivedKey;
}
});
/**
* Derives a key from a password.
*
* @param {WordArray|string} password The password.
* @param {WordArray|string} salt A salt.
* @param {Object} cfg (Optional) The configuration options to use for this computation.
*
* @return {WordArray} The derived key.
*
* @static
*
* @example
*
* var key = CryptoJS.EvpKDF(password, salt);
* var key = CryptoJS.EvpKDF(password, salt, { keySize: 8 });
* var key = CryptoJS.EvpKDF(password, salt, { keySize: 8, iterations: 1000 });
*/
C.EvpKDF = function (password, salt, cfg) {
return EvpKDF.create(cfg).compute(password, salt);
};
}());
/**
* 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) {
// Shortcut
var iv = this._iv;
// Choose mixing block
if (iv) {
var block = iv;
// Remove IV for subsequent blocks
this._iv = undefined;
} else {
var 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 () {
// 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) {
var modeCreator = mode.createEncryptor;
} else /* if (this._xformMode == this._DEC_XFORM_MODE) */ {
var modeCreator = mode.createDecryptor;
// Keep at least one block in the buffer for unpadding
this._minBufferSize = 1;
}
this._mode = modeCreator.call(mode, this, iv && iv.words);
},
_doProcessBlock: function (words, offset) {
this._mode.processBlock(words, offset);
},
_doFinalize: function () {
// 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
var finalProcessedBlocks = this._process(!!'flush');
} else /* if (this._xformMode == this._DEC_XFORM_MODE) */ {
// Process final blocks
var 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) {
// Shortcuts
var ciphertext = cipherParams.ciphertext;
var salt = cipherParams.salt;
// Format
if (salt) {
var wordArray = WordArray.create([0x53616c74, 0x65645f5f]).concat(salt).concat(ciphertext);
} else {
var 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) {
// Parse base64
var ciphertext = Base64.parse(openSSLStr);
// Shortcut
var ciphertextWords = ciphertext.words;
// Test for salt
if (ciphertextWords[0] == 0x53616c74 && ciphertextWords[1] == 0x65645f5f) {
// Extract salt
var 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;
}
});
}());
(function () {
// Shortcuts
var C = CryptoJS;
var C_lib = C.lib;
var BlockCipher = C_lib.BlockCipher;
var C_algo = C.algo;
// Lookup tables
var SBOX = [];
var INV_SBOX = [];
var SUB_MIX_0 = [];
var SUB_MIX_1 = [];
var SUB_MIX_2 = [];
var SUB_MIX_3 = [];
var INV_SUB_MIX_0 = [];
var INV_SUB_MIX_1 = [];
var INV_SUB_MIX_2 = [];
var INV_SUB_MIX_3 = [];
// Compute lookup tables
(function () {
// Compute double table
var d = [];
for (var i = 0; i < 256; i++) {
if (i < 128) {
d[i] = i << 1;
} else {
d[i] = (i << 1) ^ 0x11b;
}
}
// Walk GF(2^8)
var x = 0;
var xi = 0;
for (var i = 0; i < 256; i++) {
// Compute sbox
var sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4);
sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63;
SBOX[x] = sx;
INV_SBOX[sx] = x;
// Compute multiplication
var x2 = d[x];
var x4 = d[x2];
var x8 = d[x4];
// Compute sub bytes, mix columns tables
var t = (d[sx] * 0x101) ^ (sx * 0x1010100);
SUB_MIX_0[x] = (t << 24) | (t >>> 8);
SUB_MIX_1[x] = (t << 16) | (t >>> 16);
SUB_MIX_2[x] = (t << 8) | (t >>> 24);
SUB_MIX_3[x] = t;
// Compute inv sub bytes, inv mix columns tables
var t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100);
INV_SUB_MIX_0[sx] = (t << 24) | (t >>> 8);
INV_SUB_MIX_1[sx] = (t << 16) | (t >>> 16);
INV_SUB_MIX_2[sx] = (t << 8) | (t >>> 24);
INV_SUB_MIX_3[sx] = t;
// Compute next counter
if (!x) {
x = xi = 1;
} else {
x = x2 ^ d[d[d[x8 ^ x2]]];
xi ^= d[d[xi]];
}
}
}());
// Precomputed Rcon lookup
var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36];
/**
* AES block cipher algorithm.
*/
var AES = C_algo.AES = BlockCipher.extend({
_doReset: function () {
// Shortcuts
var key = this._key;
var keyWords = key.words;
var keySize = key.sigBytes / 4;
// Compute number of rounds
var nRounds = this._nRounds = keySize + 6
// Compute number of key schedule rows
var ksRows = (nRounds + 1) * 4;
// Compute key schedule
var keySchedule = this._keySchedule = [];
for (var ksRow = 0; ksRow < ksRows; ksRow++) {
if (ksRow < keySize) {
keySchedule[ksRow] = keyWords[ksRow];
} else {
var t = keySchedule[ksRow - 1];
if (!(ksRow % keySize)) {
// Rot word
t = (t << 8) | (t >>> 24);
// Sub word
t = (SBOX[t >>> 24] << 24) | (SBOX[(t >>> 16) & 0xff] << 16) | (SBOX[(t >>> 8) & 0xff] << 8) | SBOX[t & 0xff];
// Mix Rcon
t ^= RCON[(ksRow / keySize) | 0] << 24;
} else if (keySize > 6 && ksRow % keySize == 4) {
// Sub word
t = (SBOX[t >>> 24] << 24) | (SBOX[(t >>> 16) & 0xff] << 16) | (SBOX[(t >>> 8) & 0xff] << 8) | SBOX[t & 0xff];
}
keySchedule[ksRow] = keySchedule[ksRow - keySize] ^ t;
}
}
// Compute inv key schedule
var invKeySchedule = this._invKeySchedule = [];
for (var invKsRow = 0; invKsRow < ksRows; invKsRow++) {
var ksRow = ksRows - invKsRow;
if (invKsRow % 4) {
var t = keySchedule[ksRow];
} else {
var t = keySchedule[ksRow - 4];
}
if (invKsRow < 4 || ksRow <= 4) {
invKeySchedule[invKsRow] = t;
} else {
invKeySchedule[invKsRow] = INV_SUB_MIX_0[SBOX[t >>> 24]] ^ INV_SUB_MIX_1[SBOX[(t >>> 16) & 0xff]] ^
INV_SUB_MIX_2[SBOX[(t >>> 8) & 0xff]] ^ INV_SUB_MIX_3[SBOX[t & 0xff]];
}
}
},
encryptBlock: function (M, offset) {
this._doCryptBlock(M, offset, this._keySchedule, SUB_MIX_0, SUB_MIX_1, SUB_MIX_2, SUB_MIX_3, SBOX);
},
decryptBlock: function (M, offset) {
// Swap 2nd and 4th rows
var t = M[offset + 1];
M[offset + 1] = M[offset + 3];
M[offset + 3] = t;
this._doCryptBlock(M, offset, this._invKeySchedule, INV_SUB_MIX_0, INV_SUB_MIX_1, INV_SUB_MIX_2, INV_SUB_MIX_3, INV_SBOX);
// Inv swap 2nd and 4th rows
var t = M[offset + 1];
M[offset + 1] = M[offset + 3];
M[offset + 3] = t;
},
_doCryptBlock: function (M, offset, keySchedule, SUB_MIX_0, SUB_MIX_1, SUB_MIX_2, SUB_MIX_3, SBOX) {
// Shortcut
var nRounds = this._nRounds;
// Get input, add round key
var s0 = M[offset] ^ keySchedule[0];
var s1 = M[offset + 1] ^ keySchedule[1];
var s2 = M[offset + 2] ^ keySchedule[2];
var s3 = M[offset + 3] ^ keySchedule[3];
// Key schedule row counter
var ksRow = 4;
// Rounds
for (var round = 1; round < nRounds; round++) {
// Shift rows, sub bytes, mix columns, add round key
var t0 = SUB_MIX_0[s0 >>> 24] ^ SUB_MIX_1[(s1 >>> 16) & 0xff] ^ SUB_MIX_2[(s2 >>> 8) & 0xff] ^ SUB_MIX_3[s3 & 0xff] ^ keySchedule[ksRow++];
var t1 = SUB_MIX_0[s1 >>> 24] ^ SUB_MIX_1[(s2 >>> 16) & 0xff] ^ SUB_MIX_2[(s3 >>> 8) & 0xff] ^ SUB_MIX_3[s0 & 0xff] ^ keySchedule[ksRow++];
var t2 = SUB_MIX_0[s2 >>> 24] ^ SUB_MIX_1[(s3 >>> 16) & 0xff] ^ SUB_MIX_2[(s0 >>> 8) & 0xff] ^ SUB_MIX_3[s1 & 0xff] ^ keySchedule[ksRow++];
var t3 = SUB_MIX_0[s3 >>> 24] ^ SUB_MIX_1[(s0 >>> 16) & 0xff] ^ SUB_MIX_2[(s1 >>> 8) & 0xff] ^ SUB_MIX_3[s2 & 0xff] ^ keySchedule[ksRow++];
// Update state
s0 = t0;
s1 = t1;
s2 = t2;
s3 = t3;
}
// Shift rows, sub bytes, add round key
var t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++];
var t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++];
var t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++];
var t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++];
// Set output
M[offset] = t0;
M[offset + 1] = t1;
M[offset + 2] = t2;
M[offset + 3] = t3;
},
keySize: 256/32
});
/**
* Shortcut functions to the cipher's object interface.
*
* @example
*
* var ciphertext = CryptoJS.AES.encrypt(message, key, cfg);
* var plaintext = CryptoJS.AES.decrypt(ciphertext, key, cfg);
*/
C.AES = BlockCipher._createHelper(AES);
}());
Give up on webcrypto :(
2014-10-26 10:46:13 +01:00
/*
THOUGH SALL USE TABSTOP AND SHIFTWIDTH 4 (so that indents read right)
2014-05-14 20:58:12 +02:00
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
;(function() {
Build CryptoJS components into webcrypto.js We only depend on cryptojs for this webcrypto polyfill, so let Grunt concatenate them into one file. The reference in the getString helper isn't needed since we use the built in string converters on CryptoJS's word arrays.
2014-11-10 04:35:50 +01:00
'use strict';
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
// Test for webcrypto support, polyfill if needed.
if (window.crypto.subtle === undefined || window.crypto.subtle === null) {
Build CryptoJS components into webcrypto.js We only depend on cryptojs for this webcrypto polyfill, so let Grunt concatenate them into one file. The reference in the getString helper isn't needed since we use the built in string converters on CryptoJS's word arrays.
2014-11-10 04:35:50 +01:00
window.crypto.subtle = (function () {
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
var StaticArrayBufferProto = new ArrayBuffer().__proto__;
function assertIsArrayBuffer(thing) {
if (thing !== Object(thing) || thing.__proto__ != StaticArrayBufferProto)
throw new Error("Needed a ArrayBuffer");
}
Refactor some low-level crypto things
2014-05-09 09:43:23 +02:00
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
// Synchronous implementation functions for polyfilling webcrypto
// All inputs/outputs are arraybuffers!
function HmacSHA256(key, input) {
assertIsArrayBuffer(key);
assertIsArrayBuffer(input);
return CryptoJS.HmacSHA256(
Fix cryptojs hmac implementation Apparently the bowerized version of cryptojs's WordArray.create doesn't handle arraybuffers correctly.
2014-11-01 05:10:01 +01:00
CryptoJS.enc.Latin1.parse(getString(input)),
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
CryptoJS.enc.Latin1.parse(getString(key))
Simplify webcrypto type conversion Previously we'd get a WordArray and convert to string before converting to array buffer. Instead, go directly to array buffer.
2014-11-10 05:03:08 +01:00
);
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
};
Lilia's Webcrypto branch rebased and a few very tiny tweaks
2014-04-04 08:33:02 +02:00
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
function encryptAESCBC(plaintext, key, iv) {
assertIsArrayBuffer(plaintext);
assertIsArrayBuffer(key);
assertIsArrayBuffer(iv);
return CryptoJS.AES.encrypt(
CryptoJS.enc.Latin1.parse(getString(plaintext)),
CryptoJS.enc.Latin1.parse(getString(key)),
{ iv: CryptoJS.enc.Latin1.parse(getString(iv)) }
Simplify webcrypto type conversion Previously we'd get a WordArray and convert to string before converting to array buffer. Instead, go directly to array buffer.
2014-11-10 05:03:08 +01:00
).ciphertext;
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
};
Fix borked spacing in webcrypto.js
2014-10-26 11:23:34 +01:00
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
function decryptAESCBC(ciphertext, key, iv) {
assertIsArrayBuffer(ciphertext);
assertIsArrayBuffer(key);
assertIsArrayBuffer(iv);
return CryptoJS.AES.decrypt(
btoa(getString(ciphertext)),
CryptoJS.enc.Latin1.parse(getString(key)),
{ iv: CryptoJS.enc.Latin1.parse(getString(iv)) }
Simplify webcrypto type conversion Previously we'd get a WordArray and convert to string before converting to array buffer. Instead, go directly to array buffer.
2014-11-10 05:03:08 +01:00
);
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
};
Lilia's Webcrypto branch rebased and a few very tiny tweaks
2014-04-04 08:33:02 +02:00
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
// utility function for connecting front and back ends via promises
// Takes an implementation function and 0 or more arguments
function promise(implementation) {
var args = Array.prototype.slice.call(arguments);
args.shift();
return new Promise(function(resolve) {
Simplify webcrypto type conversion Previously we'd get a WordArray and convert to string before converting to array buffer. Instead, go directly to array buffer.
2014-11-10 05:03:08 +01:00
var wordArray = implementation.apply(this, args);
// convert 32bit WordArray to array buffer
var buffer = new ArrayBuffer(wordArray.sigBytes);
var view = new DataView(buffer);
for(var i = 0; i*4 < buffer.byteLength; i++) {
view.setInt32(i*4, wordArray.words[i]);
}
resolve(buffer);
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
});
};
Lilia's Webcrypto branch rebased and a few very tiny tweaks
2014-04-04 08:33:02 +02:00
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
return {
encrypt: function(algorithm, key, data) {
if (algorithm.name === "AES-CBC")
return promise(encryptAESCBC, data, key, algorithm.iv.buffer || algorithm.iv);
},
Lilia's Webcrypto branch rebased and a few very tiny tweaks
2014-04-04 08:33:02 +02:00
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
decrypt: function(algorithm, key, data) {
if (algorithm.name === "AES-CBC")
return promise(decryptAESCBC, data, key, algorithm.iv.buffer || algorithm.iv);
},
Add importKey to webcrypto.js
2014-10-24 22:41:35 +02:00
Finish up webcrypto integration, Fixes #72 We now correctly and opportunistically use the webcrypto API if available, polyfilling if it's not detected. This change also includes a layer of abstraction over the webcrypto interface so we no longer have to deal with key-imports or algorithm names all over the place. Since we no longer support AES-CTR, code outside this file can simply call `textsecure.subtle.<encrypt|decrypt|sign>(key, data [, iv])`.
2014-10-27 04:02:11 +01:00
sign: function(algorithm, key, data) {
if (algorithm.name === "HMAC" && algorithm.hash === "SHA-256")
return promise(HmacSHA256, key, data);
},
importKey: function(format, key, algorithm, extractable, usages) {
return new Promise(function(resolve,reject){ resolve(key); });
}
};
})();
} // if !window.crypto.subtle
Lilia's Webcrypto branch rebased and a few very tiny tweaks
2014-04-04 08:33:02 +02:00
})();
Build CryptoJS components into webcrypto.js We only depend on cryptojs for this webcrypto polyfill, so let Grunt concatenate them into one file. The reference in the getString helper isn't needed since we use the built in string converters on CryptoJS's word arrays.
2014-11-10 04:35:50 +01:00
})();
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