partkeepr

core.js (20621B)

---

 /**
  * 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));