mirror of
https://github.com/moparisthebest/mailiverse
synced 2024-12-04 13:52:17 -05:00
214 lines
7.9 KiB
JavaScript
Executable File
214 lines
7.9 KiB
JavaScript
Executable File
/*
|
|
CryptoJS v3.1
|
|
code.google.com/p/crypto-js
|
|
(c) 2009-2013 by Jeff Mott. All rights reserved.
|
|
code.google.com/p/crypto-js/wiki/License
|
|
*/
|
|
(function () {
|
|
// Shortcuts
|
|
var C = CryptoJS;
|
|
var C_lib = C.lib;
|
|
var BlockCipher = C_lib.BlockCipher;
|
|
var C_algo = C.algo;
|
|
|
|
// Lookup tables
|
|
var SBOX = [];
|
|
var INV_SBOX = [];
|
|
var SUB_MIX_0 = [];
|
|
var SUB_MIX_1 = [];
|
|
var SUB_MIX_2 = [];
|
|
var SUB_MIX_3 = [];
|
|
var INV_SUB_MIX_0 = [];
|
|
var INV_SUB_MIX_1 = [];
|
|
var INV_SUB_MIX_2 = [];
|
|
var INV_SUB_MIX_3 = [];
|
|
|
|
// Compute lookup tables
|
|
(function () {
|
|
// Compute double table
|
|
var d = [];
|
|
for (var i = 0; i < 256; i++) {
|
|
if (i < 128) {
|
|
d[i] = i << 1;
|
|
} else {
|
|
d[i] = (i << 1) ^ 0x11b;
|
|
}
|
|
}
|
|
|
|
// Walk GF(2^8)
|
|
var x = 0;
|
|
var xi = 0;
|
|
for (var i = 0; i < 256; i++) {
|
|
// Compute sbox
|
|
var sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4);
|
|
sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63;
|
|
SBOX[x] = sx;
|
|
INV_SBOX[sx] = x;
|
|
|
|
// Compute multiplication
|
|
var x2 = d[x];
|
|
var x4 = d[x2];
|
|
var x8 = d[x4];
|
|
|
|
// Compute sub bytes, mix columns tables
|
|
var t = (d[sx] * 0x101) ^ (sx * 0x1010100);
|
|
SUB_MIX_0[x] = (t << 24) | (t >>> 8);
|
|
SUB_MIX_1[x] = (t << 16) | (t >>> 16);
|
|
SUB_MIX_2[x] = (t << 8) | (t >>> 24);
|
|
SUB_MIX_3[x] = t;
|
|
|
|
// Compute inv sub bytes, inv mix columns tables
|
|
var t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100);
|
|
INV_SUB_MIX_0[sx] = (t << 24) | (t >>> 8);
|
|
INV_SUB_MIX_1[sx] = (t << 16) | (t >>> 16);
|
|
INV_SUB_MIX_2[sx] = (t << 8) | (t >>> 24);
|
|
INV_SUB_MIX_3[sx] = t;
|
|
|
|
// Compute next counter
|
|
if (!x) {
|
|
x = xi = 1;
|
|
} else {
|
|
x = x2 ^ d[d[d[x8 ^ x2]]];
|
|
xi ^= d[d[xi]];
|
|
}
|
|
}
|
|
}());
|
|
|
|
// Precomputed Rcon lookup
|
|
var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36];
|
|
|
|
/**
|
|
* AES block cipher algorithm.
|
|
*/
|
|
var AES = C_algo.AES = BlockCipher.extend({
|
|
_doReset: function () {
|
|
// Shortcuts
|
|
var key = this._key;
|
|
var keyWords = key.words;
|
|
var keySize = key.sigBytes / 4;
|
|
|
|
// Compute number of rounds
|
|
var nRounds = this._nRounds = keySize + 6
|
|
|
|
// Compute number of key schedule rows
|
|
var ksRows = (nRounds + 1) * 4;
|
|
|
|
// Compute key schedule
|
|
var keySchedule = this._keySchedule = [];
|
|
for (var ksRow = 0; ksRow < ksRows; ksRow++) {
|
|
if (ksRow < keySize) {
|
|
keySchedule[ksRow] = keyWords[ksRow];
|
|
} else {
|
|
var t = keySchedule[ksRow - 1];
|
|
|
|
if (!(ksRow % keySize)) {
|
|
// Rot word
|
|
t = (t << 8) | (t >>> 24);
|
|
|
|
// Sub word
|
|
t = (SBOX[t >>> 24] << 24) | (SBOX[(t >>> 16) & 0xff] << 16) | (SBOX[(t >>> 8) & 0xff] << 8) | SBOX[t & 0xff];
|
|
|
|
// Mix Rcon
|
|
t ^= RCON[(ksRow / keySize) | 0] << 24;
|
|
} else if (keySize > 6 && ksRow % keySize == 4) {
|
|
// Sub word
|
|
t = (SBOX[t >>> 24] << 24) | (SBOX[(t >>> 16) & 0xff] << 16) | (SBOX[(t >>> 8) & 0xff] << 8) | SBOX[t & 0xff];
|
|
}
|
|
|
|
keySchedule[ksRow] = keySchedule[ksRow - keySize] ^ t;
|
|
}
|
|
}
|
|
|
|
// Compute inv key schedule
|
|
var invKeySchedule = this._invKeySchedule = [];
|
|
for (var invKsRow = 0; invKsRow < ksRows; invKsRow++) {
|
|
var ksRow = ksRows - invKsRow;
|
|
|
|
if (invKsRow % 4) {
|
|
var t = keySchedule[ksRow];
|
|
} else {
|
|
var t = keySchedule[ksRow - 4];
|
|
}
|
|
|
|
if (invKsRow < 4 || ksRow <= 4) {
|
|
invKeySchedule[invKsRow] = t;
|
|
} else {
|
|
invKeySchedule[invKsRow] = INV_SUB_MIX_0[SBOX[t >>> 24]] ^ INV_SUB_MIX_1[SBOX[(t >>> 16) & 0xff]] ^
|
|
INV_SUB_MIX_2[SBOX[(t >>> 8) & 0xff]] ^ INV_SUB_MIX_3[SBOX[t & 0xff]];
|
|
}
|
|
}
|
|
},
|
|
|
|
encryptBlock: function (M, offset) {
|
|
this._doCryptBlock(M, offset, this._keySchedule, SUB_MIX_0, SUB_MIX_1, SUB_MIX_2, SUB_MIX_3, SBOX);
|
|
},
|
|
|
|
decryptBlock: function (M, offset) {
|
|
// Swap 2nd and 4th rows
|
|
var t = M[offset + 1];
|
|
M[offset + 1] = M[offset + 3];
|
|
M[offset + 3] = t;
|
|
|
|
this._doCryptBlock(M, offset, this._invKeySchedule, INV_SUB_MIX_0, INV_SUB_MIX_1, INV_SUB_MIX_2, INV_SUB_MIX_3, INV_SBOX);
|
|
|
|
// Inv swap 2nd and 4th rows
|
|
var t = M[offset + 1];
|
|
M[offset + 1] = M[offset + 3];
|
|
M[offset + 3] = t;
|
|
},
|
|
|
|
_doCryptBlock: function (M, offset, keySchedule, SUB_MIX_0, SUB_MIX_1, SUB_MIX_2, SUB_MIX_3, SBOX) {
|
|
// Shortcut
|
|
var nRounds = this._nRounds;
|
|
|
|
// Get input, add round key
|
|
var s0 = M[offset] ^ keySchedule[0];
|
|
var s1 = M[offset + 1] ^ keySchedule[1];
|
|
var s2 = M[offset + 2] ^ keySchedule[2];
|
|
var s3 = M[offset + 3] ^ keySchedule[3];
|
|
|
|
// Key schedule row counter
|
|
var ksRow = 4;
|
|
|
|
// Rounds
|
|
for (var round = 1; round < nRounds; round++) {
|
|
// Shift rows, sub bytes, mix columns, add round key
|
|
var t0 = SUB_MIX_0[s0 >>> 24] ^ SUB_MIX_1[(s1 >>> 16) & 0xff] ^ SUB_MIX_2[(s2 >>> 8) & 0xff] ^ SUB_MIX_3[s3 & 0xff] ^ keySchedule[ksRow++];
|
|
var t1 = SUB_MIX_0[s1 >>> 24] ^ SUB_MIX_1[(s2 >>> 16) & 0xff] ^ SUB_MIX_2[(s3 >>> 8) & 0xff] ^ SUB_MIX_3[s0 & 0xff] ^ keySchedule[ksRow++];
|
|
var t2 = SUB_MIX_0[s2 >>> 24] ^ SUB_MIX_1[(s3 >>> 16) & 0xff] ^ SUB_MIX_2[(s0 >>> 8) & 0xff] ^ SUB_MIX_3[s1 & 0xff] ^ keySchedule[ksRow++];
|
|
var t3 = SUB_MIX_0[s3 >>> 24] ^ SUB_MIX_1[(s0 >>> 16) & 0xff] ^ SUB_MIX_2[(s1 >>> 8) & 0xff] ^ SUB_MIX_3[s2 & 0xff] ^ keySchedule[ksRow++];
|
|
|
|
// Update state
|
|
s0 = t0;
|
|
s1 = t1;
|
|
s2 = t2;
|
|
s3 = t3;
|
|
}
|
|
|
|
// Shift rows, sub bytes, add round key
|
|
var t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++];
|
|
var t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++];
|
|
var t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++];
|
|
var t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++];
|
|
|
|
// Set output
|
|
M[offset] = t0;
|
|
M[offset + 1] = t1;
|
|
M[offset + 2] = t2;
|
|
M[offset + 3] = t3;
|
|
},
|
|
|
|
keySize: 256/32
|
|
});
|
|
|
|
/**
|
|
* Shortcut functions to the cipher's object interface.
|
|
*
|
|
* @example
|
|
*
|
|
* var ciphertext = CryptoJS.AES.encrypt(message, key, cfg);
|
|
* var plaintext = CryptoJS.AES.decrypt(ciphertext, key, cfg);
|
|
*/
|
|
C.AES = BlockCipher._createHelper(AES);
|
|
}());
|