diff options
Diffstat (limited to 'library/cryptojs/components/aes.js')
| -rw-r--r-- | library/cryptojs/components/aes.js | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/library/cryptojs/components/aes.js b/library/cryptojs/components/aes.js deleted file mode 100644 index 13bfd80a2..000000000 --- a/library/cryptojs/components/aes.js +++ /dev/null @@ -1,213 +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 () {
- // 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);
-}());
|