diff options
Diffstat (limited to 'library/cryptojs/components/sha256.js')
| -rw-r--r-- | library/cryptojs/components/sha256.js | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/library/cryptojs/components/sha256.js b/library/cryptojs/components/sha256.js deleted file mode 100644 index 16cee0cfd..000000000 --- a/library/cryptojs/components/sha256.js +++ /dev/null @@ -1,185 +0,0 @@ -/* -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));
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