Spaces:
Runtime error
Runtime error
File size: 6,714 Bytes
7d73cf2 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 |
;(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;
// Reusable objects
var S = [];
var C_ = [];
var G = [];
/**
* Rabbit stream cipher algorithm.
*
* This is a legacy version that neglected to convert the key to little-endian.
* This error doesn't affect the cipher's security,
* but it does affect its compatibility with other implementations.
*/
var RabbitLegacy = C_algo.RabbitLegacy = StreamCipher.extend({
_doReset: function () {
// Shortcuts
var K = this._key.words;
var iv = this.cfg.iv;
// Generate initial state values
var X = this._X = [
K[0], (K[3] << 16) | (K[2] >>> 16),
K[1], (K[0] << 16) | (K[3] >>> 16),
K[2], (K[1] << 16) | (K[0] >>> 16),
K[3], (K[2] << 16) | (K[1] >>> 16)
];
// Generate initial counter values
var C = this._C = [
(K[2] << 16) | (K[2] >>> 16), (K[0] & 0xffff0000) | (K[1] & 0x0000ffff),
(K[3] << 16) | (K[3] >>> 16), (K[1] & 0xffff0000) | (K[2] & 0x0000ffff),
(K[0] << 16) | (K[0] >>> 16), (K[2] & 0xffff0000) | (K[3] & 0x0000ffff),
(K[1] << 16) | (K[1] >>> 16), (K[3] & 0xffff0000) | (K[0] & 0x0000ffff)
];
// Carry bit
this._b = 0;
// Iterate the system four times
for (var i = 0; i < 4; i++) {
nextState.call(this);
}
// Modify the counters
for (var i = 0; i < 8; i++) {
C[i] ^= X[(i + 4) & 7];
}
// IV setup
if (iv) {
// Shortcuts
var IV = iv.words;
var IV_0 = IV[0];
var IV_1 = IV[1];
// Generate four subvectors
var i0 = (((IV_0 << 8) | (IV_0 >>> 24)) & 0x00ff00ff) | (((IV_0 << 24) | (IV_0 >>> 8)) & 0xff00ff00);
var i2 = (((IV_1 << 8) | (IV_1 >>> 24)) & 0x00ff00ff) | (((IV_1 << 24) | (IV_1 >>> 8)) & 0xff00ff00);
var i1 = (i0 >>> 16) | (i2 & 0xffff0000);
var i3 = (i2 << 16) | (i0 & 0x0000ffff);
// Modify counter values
C[0] ^= i0;
C[1] ^= i1;
C[2] ^= i2;
C[3] ^= i3;
C[4] ^= i0;
C[5] ^= i1;
C[6] ^= i2;
C[7] ^= i3;
// Iterate the system four times
for (var i = 0; i < 4; i++) {
nextState.call(this);
}
}
},
_doProcessBlock: function (M, offset) {
// Shortcut
var X = this._X;
// Iterate the system
nextState.call(this);
// Generate four keystream words
S[0] = X[0] ^ (X[5] >>> 16) ^ (X[3] << 16);
S[1] = X[2] ^ (X[7] >>> 16) ^ (X[5] << 16);
S[2] = X[4] ^ (X[1] >>> 16) ^ (X[7] << 16);
S[3] = X[6] ^ (X[3] >>> 16) ^ (X[1] << 16);
for (var i = 0; i < 4; i++) {
// Swap endian
S[i] = (((S[i] << 8) | (S[i] >>> 24)) & 0x00ff00ff) |
(((S[i] << 24) | (S[i] >>> 8)) & 0xff00ff00);
// Encrypt
M[offset + i] ^= S[i];
}
},
blockSize: 128/32,
ivSize: 64/32
});
function nextState() {
// Shortcuts
var X = this._X;
var C = this._C;
// Save old counter values
for (var i = 0; i < 8; i++) {
C_[i] = C[i];
}
// Calculate new counter values
C[0] = (C[0] + 0x4d34d34d + this._b) | 0;
C[1] = (C[1] + 0xd34d34d3 + ((C[0] >>> 0) < (C_[0] >>> 0) ? 1 : 0)) | 0;
C[2] = (C[2] + 0x34d34d34 + ((C[1] >>> 0) < (C_[1] >>> 0) ? 1 : 0)) | 0;
C[3] = (C[3] + 0x4d34d34d + ((C[2] >>> 0) < (C_[2] >>> 0) ? 1 : 0)) | 0;
C[4] = (C[4] + 0xd34d34d3 + ((C[3] >>> 0) < (C_[3] >>> 0) ? 1 : 0)) | 0;
C[5] = (C[5] + 0x34d34d34 + ((C[4] >>> 0) < (C_[4] >>> 0) ? 1 : 0)) | 0;
C[6] = (C[6] + 0x4d34d34d + ((C[5] >>> 0) < (C_[5] >>> 0) ? 1 : 0)) | 0;
C[7] = (C[7] + 0xd34d34d3 + ((C[6] >>> 0) < (C_[6] >>> 0) ? 1 : 0)) | 0;
this._b = (C[7] >>> 0) < (C_[7] >>> 0) ? 1 : 0;
// Calculate the g-values
for (var i = 0; i < 8; i++) {
var gx = X[i] + C[i];
// Construct high and low argument for squaring
var ga = gx & 0xffff;
var gb = gx >>> 16;
// Calculate high and low result of squaring
var gh = ((((ga * ga) >>> 17) + ga * gb) >>> 15) + gb * gb;
var gl = (((gx & 0xffff0000) * gx) | 0) + (((gx & 0x0000ffff) * gx) | 0);
// High XOR low
G[i] = gh ^ gl;
}
// Calculate new state values
X[0] = (G[0] + ((G[7] << 16) | (G[7] >>> 16)) + ((G[6] << 16) | (G[6] >>> 16))) | 0;
X[1] = (G[1] + ((G[0] << 8) | (G[0] >>> 24)) + G[7]) | 0;
X[2] = (G[2] + ((G[1] << 16) | (G[1] >>> 16)) + ((G[0] << 16) | (G[0] >>> 16))) | 0;
X[3] = (G[3] + ((G[2] << 8) | (G[2] >>> 24)) + G[1]) | 0;
X[4] = (G[4] + ((G[3] << 16) | (G[3] >>> 16)) + ((G[2] << 16) | (G[2] >>> 16))) | 0;
X[5] = (G[5] + ((G[4] << 8) | (G[4] >>> 24)) + G[3]) | 0;
X[6] = (G[6] + ((G[5] << 16) | (G[5] >>> 16)) + ((G[4] << 16) | (G[4] >>> 16))) | 0;
X[7] = (G[7] + ((G[6] << 8) | (G[6] >>> 24)) + G[5]) | 0;
}
/**
* Shortcut functions to the cipher's object interface.
*
* @example
*
* var ciphertext = CryptoJS.RabbitLegacy.encrypt(message, key, cfg);
* var plaintext = CryptoJS.RabbitLegacy.decrypt(ciphertext, key, cfg);
*/
C.RabbitLegacy = StreamCipher._createHelper(RabbitLegacy);
}());
return CryptoJS.RabbitLegacy;
})); |