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Diffstat (limited to 'library/cryptojs/components/core.js')
| -rw-r--r-- | library/cryptojs/components/core.js | 712 |
1 files changed, 712 insertions, 0 deletions
diff --git a/library/cryptojs/components/core.js b/library/cryptojs/components/core.js new file mode 100644 index 000000000..996aa07c0 --- /dev/null +++ b/library/cryptojs/components/core.js @@ -0,0 +1,712 @@ +/* +CryptoJS v3.1.2 +code.google.com/p/crypto-js +(c) 2009-2013 by Jeff Mott. All rights reserved. +code.google.com/p/crypto-js/wiki/License +*/ +/**
+ * 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));
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