807 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
			
		
		
	
	
			807 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
| ;(function (root, factory) {
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| 	if (typeof exports === "object") {
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| 		// CommonJS
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| 		module.exports = exports = factory();
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| 	}
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| 	else if (typeof define === "function" && define.amd) {
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| 		// AMD
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| 		define([], factory);
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| 	}
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| 	else {
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| 		// Global (browser)
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| 		root.CryptoJS = factory();
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| 	}
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| }(this, function () {
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| 
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| 	/*globals window, global, require*/
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| 
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| 	/**
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| 	 * CryptoJS core components.
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| 	 */
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| 	var CryptoJS = CryptoJS || (function (Math, undefined) {
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| 
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| 	    var crypto;
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| 
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| 	    // Native crypto from window (Browser)
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| 	    if (typeof window !== 'undefined' && window.crypto) {
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| 	        crypto = window.crypto;
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| 	    }
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| 
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| 	    // Native crypto in web worker (Browser)
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| 	    if (typeof self !== 'undefined' && self.crypto) {
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| 	        crypto = self.crypto;
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| 	    }
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| 
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| 	    // Native crypto from worker
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| 	    if (typeof globalThis !== 'undefined' && globalThis.crypto) {
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| 	        crypto = globalThis.crypto;
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| 	    }
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| 
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| 	    // Native (experimental IE 11) crypto from window (Browser)
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| 	    if (!crypto && typeof window !== 'undefined' && window.msCrypto) {
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| 	        crypto = window.msCrypto;
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| 	    }
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| 
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| 	    // Native crypto from global (NodeJS)
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| 	    if (!crypto && typeof global !== 'undefined' && global.crypto) {
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| 	        crypto = global.crypto;
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| 	    }
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| 
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| 	    // Native crypto import via require (NodeJS)
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| 	    if (!crypto && typeof require === 'function') {
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| 	        try {
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| 	            crypto = require('crypto');
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| 	        } catch (err) {}
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| 	    }
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| 
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| 	    /*
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| 	     * Cryptographically secure pseudorandom number generator
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| 	     *
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| 	     * As Math.random() is cryptographically not safe to use
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| 	     */
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| 	    var cryptoSecureRandomInt = function () {
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| 	        if (crypto) {
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| 	            // Use getRandomValues method (Browser)
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| 	            if (typeof crypto.getRandomValues === 'function') {
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| 	                try {
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| 	                    return crypto.getRandomValues(new Uint32Array(1))[0];
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| 	                } catch (err) {}
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| 	            }
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| 
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| 	            // Use randomBytes method (NodeJS)
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| 	            if (typeof crypto.randomBytes === 'function') {
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| 	                try {
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| 	                    return crypto.randomBytes(4).readInt32LE();
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| 	                } catch (err) {}
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| 	            }
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| 	        }
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| 
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| 	        throw new Error('Native crypto module could not be used to get secure random number.');
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| 	    };
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| 
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| 	    /*
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| 	     * Local polyfill of Object.create
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| 
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| 	     */
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| 	    var create = Object.create || (function () {
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| 	        function F() {}
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| 
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| 	        return function (obj) {
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| 	            var subtype;
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| 
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| 	            F.prototype = obj;
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| 
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| 	            subtype = new F();
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| 
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| 	            F.prototype = null;
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| 
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| 	            return subtype;
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| 	        };
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| 	    }());
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| 
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| 	    /**
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| 	     * CryptoJS namespace.
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| 	     */
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| 	    var C = {};
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| 
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| 	    /**
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| 	     * Library namespace.
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| 	     */
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| 	    var C_lib = C.lib = {};
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| 
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| 	    /**
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| 	     * Base object for prototypal inheritance.
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| 	     */
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| 	    var Base = C_lib.Base = (function () {
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| 
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| 
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| 	        return {
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| 	            /**
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| 	             * Creates a new object that inherits from this object.
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| 	             *
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| 	             * @param {Object} overrides Properties to copy into the new object.
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| 	             *
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| 	             * @return {Object} The new object.
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| 	             *
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| 	             * @static
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| 	             *
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| 	             * @example
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| 	             *
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| 	             *     var MyType = CryptoJS.lib.Base.extend({
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| 	             *         field: 'value',
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| 	             *
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| 	             *         method: function () {
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| 	             *         }
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| 	             *     });
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| 	             */
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| 	            extend: function (overrides) {
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| 	                // Spawn
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| 	                var subtype = create(this);
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| 
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| 	                // Augment
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| 	                if (overrides) {
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| 	                    subtype.mixIn(overrides);
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| 	                }
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| 
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| 	                // Create default initializer
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| 	                if (!subtype.hasOwnProperty('init') || this.init === subtype.init) {
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| 	                    subtype.init = function () {
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| 	                        subtype.$super.init.apply(this, arguments);
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| 	                    };
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| 	                }
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| 
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| 	                // Initializer's prototype is the subtype object
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| 	                subtype.init.prototype = subtype;
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| 
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| 	                // Reference supertype
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| 	                subtype.$super = this;
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| 
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| 	                return subtype;
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| 	            },
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| 
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| 	            /**
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| 	             * Extends this object and runs the init method.
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| 	             * Arguments to create() will be passed to init().
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| 	             *
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| 	             * @return {Object} The new object.
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| 	             *
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| 	             * @static
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| 	             *
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| 	             * @example
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| 	             *
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| 	             *     var instance = MyType.create();
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| 	             */
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| 	            create: function () {
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| 	                var instance = this.extend();
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| 	                instance.init.apply(instance, arguments);
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| 
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| 	                return instance;
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| 	            },
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| 
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| 	            /**
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| 	             * Initializes a newly created object.
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| 	             * Override this method to add some logic when your objects are created.
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| 	             *
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| 	             * @example
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| 	             *
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| 	             *     var MyType = CryptoJS.lib.Base.extend({
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| 	             *         init: function () {
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| 	             *             // ...
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| 	             *         }
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| 	             *     });
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| 	             */
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| 	            init: function () {
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| 	            },
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| 
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| 	            /**
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| 	             * Copies properties into this object.
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| 	             *
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| 	             * @param {Object} properties The properties to mix in.
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| 	             *
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| 	             * @example
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| 	             *
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| 	             *     MyType.mixIn({
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| 	             *         field: 'value'
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| 	             *     });
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| 	             */
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| 	            mixIn: function (properties) {
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| 	                for (var propertyName in properties) {
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| 	                    if (properties.hasOwnProperty(propertyName)) {
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| 	                        this[propertyName] = properties[propertyName];
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| 	                    }
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| 	                }
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| 
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| 	                // IE won't copy toString using the loop above
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| 	                if (properties.hasOwnProperty('toString')) {
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| 	                    this.toString = properties.toString;
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| 	                }
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| 	            },
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| 
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| 	            /**
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| 	             * Creates a copy of this object.
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| 	             *
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| 	             * @return {Object} The clone.
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| 	             *
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| 	             * @example
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| 	             *
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| 	             *     var clone = instance.clone();
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| 	             */
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| 	            clone: function () {
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| 	                return this.init.prototype.extend(this);
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| 	            }
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| 	        };
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| 	    }());
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| 
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| 	    /**
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| 	     * An array of 32-bit words.
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| 	     *
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| 	     * @property {Array} words The array of 32-bit words.
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| 	     * @property {number} sigBytes The number of significant bytes in this word array.
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| 	     */
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| 	    var WordArray = C_lib.WordArray = Base.extend({
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| 	        /**
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| 	         * Initializes a newly created word array.
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| 	         *
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| 	         * @param {Array} words (Optional) An array of 32-bit words.
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| 	         * @param {number} sigBytes (Optional) The number of significant bytes in the words.
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| 	         *
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| 	         * @example
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| 	         *
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| 	         *     var wordArray = CryptoJS.lib.WordArray.create();
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| 	         *     var wordArray = CryptoJS.lib.WordArray.create([0x00010203, 0x04050607]);
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| 	         *     var wordArray = CryptoJS.lib.WordArray.create([0x00010203, 0x04050607], 6);
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| 	         */
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| 	        init: function (words, sigBytes) {
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| 	            words = this.words = words || [];
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| 
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| 	            if (sigBytes != undefined) {
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| 	                this.sigBytes = sigBytes;
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| 	            } else {
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| 	                this.sigBytes = words.length * 4;
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| 	            }
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| 	        },
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| 
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| 	        /**
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| 	         * Converts this word array to a string.
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| 	         *
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| 	         * @param {Encoder} encoder (Optional) The encoding strategy to use. Default: CryptoJS.enc.Hex
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| 	         *
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| 	         * @return {string} The stringified word array.
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| 	         *
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| 	         * @example
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| 	         *
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| 	         *     var string = wordArray + '';
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| 	         *     var string = wordArray.toString();
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| 	         *     var string = wordArray.toString(CryptoJS.enc.Utf8);
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| 	         */
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| 	        toString: function (encoder) {
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| 	            return (encoder || Hex).stringify(this);
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| 	        },
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| 
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| 	        /**
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| 	         * Concatenates a word array to this word array.
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| 	         *
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| 	         * @param {WordArray} wordArray The word array to append.
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| 	         *
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| 	         * @return {WordArray} This word array.
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| 	         *
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| 	         * @example
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| 	         *
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| 	         *     wordArray1.concat(wordArray2);
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| 	         */
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| 	        concat: function (wordArray) {
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| 	            // Shortcuts
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| 	            var thisWords = this.words;
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| 	            var thatWords = wordArray.words;
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| 	            var thisSigBytes = this.sigBytes;
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| 	            var thatSigBytes = wordArray.sigBytes;
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| 
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| 	            // Clamp excess bits
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| 	            this.clamp();
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| 
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| 	            // Concat
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| 	            if (thisSigBytes % 4) {
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| 	                // Copy one byte at a time
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| 	                for (var i = 0; i < thatSigBytes; i++) {
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| 	                    var thatByte = (thatWords[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
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| 	                    thisWords[(thisSigBytes + i) >>> 2] |= thatByte << (24 - ((thisSigBytes + i) % 4) * 8);
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| 	                }
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| 	            } else {
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| 	                // Copy one word at a time
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| 	                for (var j = 0; j < thatSigBytes; j += 4) {
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| 	                    thisWords[(thisSigBytes + j) >>> 2] = thatWords[j >>> 2];
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| 	                }
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| 	            }
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| 	            this.sigBytes += thatSigBytes;
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| 
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| 	            // Chainable
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| 	            return this;
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| 	        },
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| 
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| 	        /**
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| 	         * Removes insignificant bits.
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| 	         *
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| 	         * @example
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| 	         *
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| 	         *     wordArray.clamp();
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| 	         */
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| 	        clamp: function () {
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| 	            // Shortcuts
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| 	            var words = this.words;
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| 	            var sigBytes = this.sigBytes;
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| 
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| 	            // Clamp
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| 	            words[sigBytes >>> 2] &= 0xffffffff << (32 - (sigBytes % 4) * 8);
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| 	            words.length = Math.ceil(sigBytes / 4);
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| 	        },
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| 
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| 	        /**
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| 	         * Creates a copy of this word array.
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| 	         *
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| 	         * @return {WordArray} The clone.
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| 	         *
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| 	         * @example
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| 	         *
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| 	         *     var clone = wordArray.clone();
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| 	         */
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| 	        clone: function () {
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| 	            var clone = Base.clone.call(this);
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| 	            clone.words = this.words.slice(0);
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| 
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| 	            return clone;
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| 	        },
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| 
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| 	        /**
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| 	         * Creates a word array filled with random bytes.
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| 	         *
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| 	         * @param {number} nBytes The number of random bytes to generate.
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| 	         *
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| 	         * @return {WordArray} The random word array.
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| 	         *
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| 	         * @static
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| 	         *
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| 	         * @example
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| 	         *
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| 	         *     var wordArray = CryptoJS.lib.WordArray.random(16);
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| 	         */
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| 	        random: function (nBytes) {
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| 	            var words = [];
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| 
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| 	            for (var i = 0; i < nBytes; i += 4) {
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| 	                words.push(cryptoSecureRandomInt());
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| 	            }
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| 
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| 	            return new WordArray.init(words, nBytes);
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| 	        }
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| 	    });
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| 
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| 	    /**
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| 	     * Encoder namespace.
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| 	     */
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| 	    var C_enc = C.enc = {};
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| 
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| 	    /**
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| 	     * Hex encoding strategy.
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| 	     */
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| 	    var Hex = C_enc.Hex = {
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| 	        /**
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| 	         * Converts a word array to a hex string.
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| 	         *
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| 	         * @param {WordArray} wordArray The word array.
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| 	         *
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| 	         * @return {string} The hex string.
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| 	         *
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| 	         * @static
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| 	         *
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| 	         * @example
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| 	         *
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| 	         *     var hexString = CryptoJS.enc.Hex.stringify(wordArray);
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| 	         */
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| 	        stringify: function (wordArray) {
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| 	            // Shortcuts
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| 	            var words = wordArray.words;
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| 	            var sigBytes = wordArray.sigBytes;
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| 
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| 	            // Convert
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| 	            var hexChars = [];
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| 	            for (var i = 0; i < sigBytes; i++) {
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| 	                var bite = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
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| 	                hexChars.push((bite >>> 4).toString(16));
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| 	                hexChars.push((bite & 0x0f).toString(16));
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| 	            }
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| 
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| 	            return hexChars.join('');
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| 	        },
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| 
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| 	        /**
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| 	         * Converts a hex string to a word array.
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| 	         *
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| 	         * @param {string} hexStr The hex string.
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| 	         *
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| 	         * @return {WordArray} The word array.
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| 	         *
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| 	         * @static
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| 	         *
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| 	         * @example
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| 	         *
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| 	         *     var wordArray = CryptoJS.enc.Hex.parse(hexString);
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| 	         */
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| 	        parse: function (hexStr) {
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| 	            // Shortcut
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| 	            var hexStrLength = hexStr.length;
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| 
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| 	            // Convert
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| 	            var words = [];
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| 	            for (var i = 0; i < hexStrLength; i += 2) {
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| 	                words[i >>> 3] |= parseInt(hexStr.substr(i, 2), 16) << (24 - (i % 8) * 4);
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| 	            }
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| 
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| 	            return new WordArray.init(words, hexStrLength / 2);
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| 	        }
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| 	    };
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| 
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| 	    /**
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| 	     * Latin1 encoding strategy.
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| 	     */
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| 	    var Latin1 = C_enc.Latin1 = {
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| 	        /**
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| 	         * Converts a word array to a Latin1 string.
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| 	         *
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| 	         * @param {WordArray} wordArray The word array.
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| 	         *
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| 	         * @return {string} The Latin1 string.
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| 	         *
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| 	         * @static
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| 	         *
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| 	         * @example
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| 	         *
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| 	         *     var latin1String = CryptoJS.enc.Latin1.stringify(wordArray);
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| 	         */
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| 	        stringify: function (wordArray) {
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| 	            // Shortcuts
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| 	            var words = wordArray.words;
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| 	            var sigBytes = wordArray.sigBytes;
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| 
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| 	            // Convert
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| 	            var latin1Chars = [];
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| 	            for (var i = 0; i < sigBytes; i++) {
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| 	                var bite = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
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| 	                latin1Chars.push(String.fromCharCode(bite));
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| 	            }
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| 
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| 	            return latin1Chars.join('');
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| 	        },
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| 
 | |
| 	        /**
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| 	         * Converts a Latin1 string to a word array.
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| 	         *
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| 	         * @param {string} latin1Str The Latin1 string.
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| 	         *
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| 	         * @return {WordArray} The word array.
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| 	         *
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| 	         * @static
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| 	         *
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| 	         * @example
 | |
| 	         *
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| 	         *     var wordArray = CryptoJS.enc.Latin1.parse(latin1String);
 | |
| 	         */
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| 	        parse: function (latin1Str) {
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| 	            // Shortcut
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| 	            var latin1StrLength = latin1Str.length;
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| 
 | |
| 	            // Convert
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| 	            var words = [];
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| 	            for (var i = 0; i < latin1StrLength; i++) {
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| 	                words[i >>> 2] |= (latin1Str.charCodeAt(i) & 0xff) << (24 - (i % 4) * 8);
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| 	            }
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| 
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| 	            return new WordArray.init(words, latin1StrLength);
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| 	        }
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| 	    };
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| 
 | |
| 	    /**
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| 	     * UTF-8 encoding strategy.
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| 	     */
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| 	    var Utf8 = C_enc.Utf8 = {
 | |
| 	        /**
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| 	         * Converts a word array to a UTF-8 string.
 | |
| 	         *
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| 	         * @param {WordArray} wordArray The word array.
 | |
| 	         *
 | |
| 	         * @return {string} The UTF-8 string.
 | |
| 	         *
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| 	         * @static
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| 	         *
 | |
| 	         * @example
 | |
| 	         *
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| 	         *     var utf8String = CryptoJS.enc.Utf8.stringify(wordArray);
 | |
| 	         */
 | |
| 	        stringify: function (wordArray) {
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| 	            try {
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| 	                return decodeURIComponent(escape(Latin1.stringify(wordArray)));
 | |
| 	            } catch (e) {
 | |
| 	                throw new Error('Malformed UTF-8 data');
 | |
| 	            }
 | |
| 	        },
 | |
| 
 | |
| 	        /**
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| 	         * 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) {
 | |
| 	            var processedWords;
 | |
| 
 | |
| 	            // 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
 | |
| 	                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));
 | |
| 
 | |
| 
 | |
| 	return CryptoJS;
 | |
| 
 | |
| })); |