133 lines
3.5 KiB
JavaScript
Executable file
133 lines
3.5 KiB
JavaScript
Executable file
/*!
|
|
* Crypto-JS v2.0.0
|
|
* http://code.google.com/p/crypto-js/
|
|
* Copyright (c) 2009, Jeff Mott. All rights reserved.
|
|
* http://code.google.com/p/crypto-js/wiki/License
|
|
*/
|
|
(function(){
|
|
|
|
// Shortcuts
|
|
var C = Crypto,
|
|
util = C.util,
|
|
charenc = C.charenc,
|
|
UTF8 = charenc.UTF8,
|
|
Binary = charenc.Binary;
|
|
|
|
// Constants
|
|
var K = [ 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
|
|
0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
|
|
0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
|
|
0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
|
|
0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
|
|
0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
|
|
0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
|
|
0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
|
|
0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
|
|
0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
|
|
0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
|
|
0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
|
|
0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
|
|
0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
|
|
0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
|
|
0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2 ];
|
|
|
|
// Public API
|
|
var SHA256 = C.SHA256 = function (message, options) {
|
|
var digestbytes = util.wordsToBytes(SHA256._sha256(message));
|
|
return options && options.asBytes ? digestbytes :
|
|
options && options.asString ? Binary.bytesToString(digestbytes) :
|
|
util.bytesToHex(digestbytes);
|
|
};
|
|
|
|
// The core
|
|
SHA256._sha256 = function (message) {
|
|
|
|
// Convert to byte array
|
|
if (message.constructor == String) message = UTF8.stringToBytes(message);
|
|
/* else, assume byte array already */
|
|
|
|
var m = util.bytesToWords(message),
|
|
l = message.length * 8,
|
|
H = [ 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A,
|
|
0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19 ],
|
|
w = [],
|
|
a, b, c, d, e, f, g, h, i, j,
|
|
t1, t2;
|
|
|
|
// Padding
|
|
m[l >> 5] |= 0x80 << (24 - l % 32);
|
|
m[((l + 64 >> 9) << 4) + 15] = l;
|
|
|
|
for (var i = 0; i < m.length; i += 16) {
|
|
|
|
a = H[0];
|
|
b = H[1];
|
|
c = H[2];
|
|
d = H[3];
|
|
e = H[4];
|
|
f = H[5];
|
|
g = H[6];
|
|
h = H[7];
|
|
|
|
for (var j = 0; j < 64; j++) {
|
|
|
|
if (j < 16) w[j] = m[j + i];
|
|
else {
|
|
|
|
var gamma0x = w[j - 15],
|
|
gamma1x = w[j - 2],
|
|
gamma0 = ((gamma0x << 25) | (gamma0x >>> 7)) ^
|
|
((gamma0x << 14) | (gamma0x >>> 18)) ^
|
|
(gamma0x >>> 3),
|
|
gamma1 = ((gamma1x << 15) | (gamma1x >>> 17)) ^
|
|
((gamma1x << 13) | (gamma1x >>> 19)) ^
|
|
(gamma1x >>> 10);
|
|
|
|
w[j] = gamma0 + (w[j - 7] >>> 0) +
|
|
gamma1 + (w[j - 16] >>> 0);
|
|
|
|
}
|
|
|
|
var ch = e & f ^ ~e & g,
|
|
maj = a & b ^ a & c ^ b & c,
|
|
sigma0 = ((a << 30) | (a >>> 2)) ^
|
|
((a << 19) | (a >>> 13)) ^
|
|
((a << 10) | (a >>> 22)),
|
|
sigma1 = ((e << 26) | (e >>> 6)) ^
|
|
((e << 21) | (e >>> 11)) ^
|
|
((e << 7) | (e >>> 25));
|
|
|
|
|
|
t1 = (h >>> 0) + sigma1 + ch + (K[j]) + (w[j] >>> 0);
|
|
t2 = sigma0 + maj;
|
|
|
|
h = g;
|
|
g = f;
|
|
f = e;
|
|
e = d + t1;
|
|
d = c;
|
|
c = b;
|
|
b = a;
|
|
a = t1 + t2;
|
|
|
|
}
|
|
|
|
H[0] += a;
|
|
H[1] += b;
|
|
H[2] += c;
|
|
H[3] += d;
|
|
H[4] += e;
|
|
H[5] += f;
|
|
H[6] += g;
|
|
H[7] += h;
|
|
|
|
}
|
|
|
|
return H;
|
|
|
|
};
|
|
|
|
// Package private blocksize
|
|
SHA256._blocksize = 16;
|
|
|
|
})();
|