/**
* A JavaScript implementation of the MD5 hashing algorithm
*
* @module crypto
* @submodule cryto-md5
*/
/**
* @class Crypto
*/
_C = Y.Crypto;
/**
* Calculates the MD5 hash for the given message
* @method MD5
* @static
* @param {string} msg The message to calculate the hash of, typically a UTF-8 string
* @returns string The MD5 hash of the message.
*/
_C.MD5 = function (msg) {
var rotate_left = function(x, n) {
return ((x) << (n)) | (x >>> (32-n));
},
transform_common = function (v, a, b, x, s, ac)
var t = _C.add32Bit(_C.add32Bit(_C.add32Bit(a, v), x || 0), ac)
return _C.add32Bit(rotate_left(t, s), b);
},
FF = function(a, b, c, d, x, s, ac) {
return transform_common(((b & c) | ((~b) & d)), a, b, x, s, ac);
},
GG = function(a, b, c, d, x, s, ac) {
return transform_common(((b & d) | (c & (~d))), a, b, x, s, ac);
},
HH = function(a, b, c, d, x, s, ac) {
return transform_common((b ^ c ^ d), a, b, x, s, ac);
},
II = function(a, b, c, d, x, s, ac) {
return transform_common((c ^ (b | (~d))), a, b, x, s, ac);
},
data = _C.stringToByteArray(msg),
len = msg.length * 8,
a = 0x67452301,
b = 0xefcdab89,
c = 0x98badcfe,
d = 0x10325476, i, s1, s2, s3, s4;
data[len >> 5] |= 0x80 << ((len) % 32);
data[(((len + 64) >>> 9) << 4) + 14] = len;
for ( i = 0 ; i < data.length ; i += 16) {
s1 = a; s2 = b; s3 = c; s4 = d;
/* Round 1 */
a = FF (a, b, c, d, data[i + 0], 7, 0xd76aa478); /* 1 */
d = FF (d, a, b, c, data[i + 1], 12, 0xe8c7b756); /* 2 */
c = FF (c, d, a, b, data[i + 2], 17, 0x242070db); /* 3 */
b = FF (b, c, d, a, data[i + 3], 22, 0xc1bdceee); /* 4 */
a = FF (a, b, c, d, data[i + 4], 7, 0xf57c0faf); /* 5 */
d = FF (d, a, b, c, data[i + 5], 12, 0x4787c62a); /* 6 */
c = FF (c, d, a, b, data[i + 6], 17, 0xa8304613); /* 7 */
b = FF (b, c, d, a, data[i + 7], 22, 0xfd469501); /* 8 */
a = FF (a, b, c, d, data[i + 8], 7, 0x698098d8); /* 9 */
d = FF (d, a, b, c, data[i + 9], 12, 0x8b44f7af); /* 10 */
c = FF (c, d, a, b, data[i +10], 17, 0xffff5bb1); /* 11 */
b = FF (b, c, d, a, data[i +11], 22, 0x895cd7be); /* 12 */
a = FF (a, b, c, d, data[i +12], 7, 0x6b901122); /* 13 */
d = FF (d, a, b, c, data[i +13], 12, 0xfd987193); /* 14 */
c = FF (c, d, a, b, data[i +14], 17, 0xa679438e); /* 15 */
b = FF (b, c, d, a, data[i +15], 22, 0x49b40821); /* 16 */
/* Round 2 */
a = GG (a, b, c, d, data[i + 1], 5, 0xf61e2562); /* 17 */
d = GG (d, a, b, c, data[i + 6], 9, 0xc040b340); /* 18 */
c = GG (c, d, a, b, data[i +11], 14, 0x265e5a51); /* 19 */
b = GG (b, c, d, a, data[i + 0], 20, 0xe9b6c7aa); /* 20 */
a = GG (a, b, c, d, data[i + 5], 5, 0xd62f105d); /* 21 */
d = GG (d, a, b, c, data[i +10], 9, 0x2441453); /* 22 */
c = GG (c, d, a, b, data[i +15], 14, 0xd8a1e681); /* 23 */
b = GG (b, c, d, a, data[i + 4], 20, 0xe7d3fbc8); /* 24 */
a = GG (a, b, c, d, data[i + 9], 5, 0x21e1cde6); /* 25 */
d = GG (d, a, b, c, data[i +14], 9, 0xc33707d6); /* 26 */
c = GG (c, d, a, b, data[i + 3], 14, 0xf4d50d87); /* 27 */
b = GG (b, c, d, a, data[i + 8], 20, 0x455a14ed); /* 28 */
a = GG (a, b, c, d, data[i +13], 5, 0xa9e3e905); /* 29 */
d = GG (d, a, b, c, data[i + 2], 9, 0xfcefa3f8); /* 30 */
c = GG (c, d, a, b, data[i + 7], 14, 0x676f02d9); /* 31 */
b = GG (b, c, d, a, data[i +12], 20, 0x8d2a4c8a); /* 32 */
/* Round 3 */
a = HH (a, b, c, d, data[i + 5], 4, 0xfffa3942); /* 33 */
d = HH (d, a, b, c, data[i + 8], 11, 0x8771f681); /* 34 */
c = HH (c, d, a, b, data[i +11], 16, 0x6d9d6122); /* 35 */
b = HH (b, c, d, a, data[i +14], 23, 0xfde5380c); /* 36 */
a = HH (a, b, c, d, data[i + 1], 4, 0xa4beea44); /* 37 */
d = HH (d, a, b, c, data[i + 4], 11, 0x4bdecfa9); /* 38 */
c = HH (c, d, a, b, data[i + 7], 16, 0xf6bb4b60); /* 39 */
b = HH (b, c, d, a, data[i +10], 23, 0xbebfbc70); /* 40 */
a = HH (a, b, c, d, data[i +13], 4, 0x289b7ec6); /* 41 */
d = HH (d, a, b, c, data[i + 0], 11, 0xeaa127fa); /* 42 */
c = HH (c, d, a, b, data[i + 3], 16, 0xd4ef3085); /* 43 */
b = HH (b, c, d, a, data[i + 6], 23, 0x4881d05); /* 44 */
a = HH (a, b, c, d, data[i + 9], 4, 0xd9d4d039); /* 45 */
d = HH (d, a, b, c, data[i +12], 11, 0xe6db99e5); /* 46 */
c = HH (c, d, a, b, data[i +15], 16, 0x1fa27cf8); /* 47 */
b = HH (b, c, d, a, data[i + 2], 23, 0xc4ac5665); /* 48 */
/* Round 4 */
a = II (a, b, c, d, data[i + 0], 6, 0xf4292244); /* 49 */
d = II (d, a, b, c, data[i + 7], 10, 0x432aff97); /* 50 */
c = II (c, d, a, b, data[i +14], 15, 0xab9423a7); /* 51 */
b = II (b, c, d, a, data[i + 5], 21, 0xfc93a039); /* 52 */
a = II (a, b, c, d, data[i +12], 6, 0x655b59c3); /* 53 */
d = II (d, a, b, c, data[i + 3], 10, 0x8f0ccc92); /* 54 */
c = II (c, d, a, b, data[i +10], 15, 0xffeff47d); /* 55 */
b = II (b, c, d, a, data[i + 1], 21, 0x85845dd1); /* 56 */
a = II (a, b, c, d, data[i + 8], 6, 0x6fa87e4f); /* 57 */
d = II (d, a, b, c, data[i +15], 10, 0xfe2ce6e0); /* 58 */
c = II (c, d, a, b, data[i + 6], 15, 0xa3014314); /* 59 */
b = II (b, c, d, a, data[i +13], 21, 0x4e0811a1); /* 60 */
a = II (a, b, c, d, data[i + 4], 6, 0xf7537e82); /* 61 */
d = II (d, a, b, c, data[i +11], 10, 0xbd3af235); /* 62 */
c = II (c, d, a, b, data[i + 2], 15, 0x2ad7d2bb); /* 63 */
b = II (b, c, d, a, data[i + 9], 21, 0xeb86d391); /* 64 */
a = _C.add32Bit(a, s1);
b = _C.add32Bit(b, s2);
c = _C.add32Bit(c, s3);
d = _C.add32Bit(d, s4);
}
return _C.utf8ToHex(_C.byteArrayToString([a, b, c, d]));
};