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Diffstat (limited to 'www/lib/crypto-js/rc4.js')
| -rw-r--r-- | www/lib/crypto-js/rc4.js | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/www/lib/crypto-js/rc4.js b/www/lib/crypto-js/rc4.js deleted file mode 100644 index 0e4bdff5..00000000 --- a/www/lib/crypto-js/rc4.js +++ /dev/null @@ -1,139 +0,0 @@ -;(function (root, factory, undef) { - if (typeof exports === "object") { - // CommonJS - module.exports = exports = factory(require("./core"), require("./enc-base64"), require("./md5"), require("./evpkdf"), require("./cipher-core")); - } - else if (typeof define === "function" && define.amd) { - // AMD - define(["./core", "./enc-base64", "./md5", "./evpkdf", "./cipher-core"], factory); - } - else { - // Global (browser) - factory(root.CryptoJS); - } -}(this, function (CryptoJS) { - - (function () { - // Shortcuts - var C = CryptoJS; - var C_lib = C.lib; - var StreamCipher = C_lib.StreamCipher; - var C_algo = C.algo; - - /** - * RC4 stream cipher algorithm. - */ - var RC4 = C_algo.RC4 = StreamCipher.extend({ - _doReset: function () { - // Shortcuts - var key = this._key; - var keyWords = key.words; - var keySigBytes = key.sigBytes; - - // Init sbox - var S = this._S = []; - for (var i = 0; i < 256; i++) { - S[i] = i; - } - - // Key setup - for (var i = 0, j = 0; i < 256; i++) { - var keyByteIndex = i % keySigBytes; - var keyByte = (keyWords[keyByteIndex >>> 2] >>> (24 - (keyByteIndex % 4) * 8)) & 0xff; - - j = (j + S[i] + keyByte) % 256; - - // Swap - var t = S[i]; - S[i] = S[j]; - S[j] = t; - } - - // Counters - this._i = this._j = 0; - }, - - _doProcessBlock: function (M, offset) { - M[offset] ^= generateKeystreamWord.call(this); - }, - - keySize: 256/32, - - ivSize: 0 - }); - - function generateKeystreamWord() { - // Shortcuts - var S = this._S; - var i = this._i; - var j = this._j; - - // Generate keystream word - var keystreamWord = 0; - for (var n = 0; n < 4; n++) { - i = (i + 1) % 256; - j = (j + S[i]) % 256; - - // Swap - var t = S[i]; - S[i] = S[j]; - S[j] = t; - - keystreamWord |= S[(S[i] + S[j]) % 256] << (24 - n * 8); - } - - // Update counters - this._i = i; - this._j = j; - - return keystreamWord; - } - - /** - * Shortcut functions to the cipher's object interface. - * - * @example - * - * var ciphertext = CryptoJS.RC4.encrypt(message, key, cfg); - * var plaintext = CryptoJS.RC4.decrypt(ciphertext, key, cfg); - */ - C.RC4 = StreamCipher._createHelper(RC4); - - /** - * Modified RC4 stream cipher algorithm. - */ - var RC4Drop = C_algo.RC4Drop = RC4.extend({ - /** - * Configuration options. - * - * @property {number} drop The number of keystream words to drop. Default 192 - */ - cfg: RC4.cfg.extend({ - drop: 192 - }), - - _doReset: function () { - RC4._doReset.call(this); - - // Drop - for (var i = this.cfg.drop; i > 0; i--) { - generateKeystreamWord.call(this); - } - } - }); - - /** - * Shortcut functions to the cipher's object interface. - * - * @example - * - * var ciphertext = CryptoJS.RC4Drop.encrypt(message, key, cfg); - * var plaintext = CryptoJS.RC4Drop.decrypt(ciphertext, key, cfg); - */ - C.RC4Drop = StreamCipher._createHelper(RC4Drop); - }()); - - - return CryptoJS.RC4; - -}));
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