get cryptojs from bower; rework voice dialog

dashboard-ui/bower_components/cryptojslib/components/sha256.js

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+/*
+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
+*/
+(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));