home *** CD-ROM | disk | FTP | other *** search
- var RMDsize = 160;
- var X = new Array();
-
- function ROL(x, n)
- {
- return new Number ((x << n) | ( x >>> (32 - n)));
- }
-
- function F(x, y, z)
- {
- return new Number(x ^ y ^ z);
- }
-
- function G(x, y, z)
- {
- return new Number((x & y) | (~x & z));
- }
-
- function H(x, y, z)
- {
- return new Number((x | ~y) ^ z);
- }
-
- function I(x, y, z)
- {
- return new Number((x & z) | (y & ~z));
- }
-
- function J(x, y, z)
- {
- return new Number(x ^ (y | ~z));
- }
-
- function mixOneRound(a, b, c, d, e, x, s, roundNumber)
- {
- switch (roundNumber)
- {
- case 0 : a += F(b, c, d) + x + 0x00000000; break;
- case 1 : a += G(b, c, d) + x + 0x5a827999; break;
- case 2 : a += H(b, c, d) + x + 0x6ed9eba1; break;
- case 3 : a += I(b, c, d) + x + 0x8f1bbcdc; break;
- case 4 : a += J(b, c, d) + x + 0xa953fd4e; break;
- case 5 : a += J(b, c, d) + x + 0x50a28be6; break;
- case 6 : a += I(b, c, d) + x + 0x5c4dd124; break;
- case 7 : a += H(b, c, d) + x + 0x6d703ef3; break;
- case 8 : a += G(b, c, d) + x + 0x7a6d76e9; break;
- case 9 : a += F(b, c, d) + x + 0x00000000; break;
-
- default : document.write("Bogus round number"); break;
- }
-
- a = ROL(a, s) + e;
- c = ROL(c, 10);
-
- a &= 0xffffffff;
- b &= 0xffffffff;
- c &= 0xffffffff;
- d &= 0xffffffff;
- e &= 0xffffffff;
-
- var retBlock = new Array();
- retBlock[0] = a;
- retBlock[1] = b;
- retBlock[2] = c;
- retBlock[3] = d;
- retBlock[4] = e;
- retBlock[5] = x;
- retBlock[6] = s;
-
- return retBlock;
- }
-
- function MDinit (MDbuf)
- {
- MDbuf[0] = 0x67452301;
- MDbuf[1] = 0xefcdab89;
- MDbuf[2] = 0x98badcfe;
- MDbuf[3] = 0x10325476;
- MDbuf[4] = 0xc3d2e1f0;
- }
-
- var ROLs = [
- [11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8],
- [ 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12],
- [11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5],
- [11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12],
- [ 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6],
- [ 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6],
- [ 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11],
- [ 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5],
- [15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8],
- [ 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11]
- ];
-
- var indexes = [
- [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
- [ 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8],
- [ 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12],
- [ 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2],
- [ 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13],
- [ 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12],
- [ 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2],
- [15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13],
- [ 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14],
- [12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11]
- ];
-
- function compress (MDbuf, X)
- {
- blockA = new Array();
- blockB = new Array();
-
- var retBlock;
-
- for (var i=0; i < 5; i++)
- {
- blockA[i] = new Number(MDbuf[i]);
- blockB[i] = new Number(MDbuf[i]);
- }
-
- var step = 0;
- for (var j = 0; j < 5; j++)
- {
- for (var i = 0; i < 16; i++)
- {
- retBlock = mixOneRound(
- blockA[(step+0) % 5],
- blockA[(step+1) % 5],
- blockA[(step+2) % 5],
- blockA[(step+3) % 5],
- blockA[(step+4) % 5],
- X[indexes[j][i]],
- ROLs[j][i],
- j
- );
-
- blockA[(step+0) % 5] = retBlock[0];
- blockA[(step+1) % 5] = retBlock[1];
- blockA[(step+2) % 5] = retBlock[2];
- blockA[(step+3) % 5] = retBlock[3];
- blockA[(step+4) % 5] = retBlock[4];
-
- step += 4;
- }
- }
-
- step = 0;
- for (var j = 5; j < 10; j++)
- {
- for (var i = 0; i < 16; i++)
- {
- retBlock = mixOneRound(
- blockB[(step+0) % 5],
- blockB[(step+1) % 5],
- blockB[(step+2) % 5],
- blockB[(step+3) % 5],
- blockB[(step+4) % 5],
- X[indexes[j][i]],
- ROLs[j][i],
- j
- );
-
- blockB[(step+0) % 5] = retBlock[0];
- blockB[(step+1) % 5] = retBlock[1];
- blockB[(step+2) % 5] = retBlock[2];
- blockB[(step+3) % 5] = retBlock[3];
- blockB[(step+4) % 5] = retBlock[4];
-
- step += 4;
- }
- }
-
- blockB[3] += blockA[2] + MDbuf[1];
- MDbuf[1] = MDbuf[2] + blockA[3] + blockB[4];
- MDbuf[2] = MDbuf[3] + blockA[4] + blockB[0];
- MDbuf[3] = MDbuf[4] + blockA[0] + blockB[1];
- MDbuf[4] = MDbuf[0] + blockA[1] + blockB[2];
- MDbuf[0] = blockB[3];
- }
-
- function zeroX(X)
- {
- for (var i = 0; i < 16; i++) { X[i] = 0; }
- }
-
- function MDfinish (MDbuf, strptr, lswlen, mswlen)
- {
- var X = new Array(16);
- zeroX(X);
-
- var j = 0;
- for (var i=0; i < (lswlen & 63); i++)
- {
- X[i >>> 2] ^= (strptr.charCodeAt(j++) & 255) << (8 * (i & 3));
- }
-
- X[(lswlen >>> 2) & 15] ^= 1 << (8 * (lswlen & 3) + 7);
-
- if ((lswlen & 63) > 55)
- {
- compress(MDbuf, X);
- var X = new Array(16);
- zeroX(X);
- }
-
- X[14] = lswlen << 3;
- X[15] = (lswlen >>> 29) | (mswlen << 3);
-
- compress(MDbuf, X);
- }
-
- function BYTES_TO_DWORD(fourChars)
- {
- var tmp = (fourChars.charCodeAt(3) & 255) << 24;
- tmp |= (fourChars.charCodeAt(2) & 255) << 16;
- tmp |= (fourChars.charCodeAt(1) & 255) << 8;
- tmp |= (fourChars.charCodeAt(0) & 255);
-
- return tmp;
- }
-
- function RMD(message)
- {
- var MDbuf = new Array(RMDsize / 32);
- var hashcode = new Array(RMDsize / 8);
- var length;
- var nbytes;
-
- MDinit(MDbuf);
- length = message.length;
-
- var X = new Array(16);
- zeroX(X);
-
- var j=0;
- for (var nbytes=length; nbytes > 63; nbytes -= 64)
- {
- for (var i=0; i < 16; i++)
- {
- X[i] = BYTES_TO_DWORD(message.substr(j, 4));
- j += 4;
- }
- compress(MDbuf, X);
- }
-
- MDfinish(MDbuf, message.substr(j), length, 0);
-
- for (var i=0; i < RMDsize / 8; i += 4)
- {
- hashcode[i] = MDbuf[i >>> 2] & 255;
- hashcode[i+1] = (MDbuf[i >>> 2] >>> 8) & 255;
- hashcode[i+2] = (MDbuf[i >>> 2] >>> 16) & 255;
- hashcode[i+3] = (MDbuf[i >>> 2] >>> 24) & 255;
- }
-
- return hashcode;
- }
-
- function toHex32(x)
- {
- var hexChars = "0123456789abcdef";
- var hex = "";
-
- for (var i = 0; i < 2; i++)
- {
- hex = String(hexChars.charAt(x & 0xf)).concat(hex);
- x >>>= 4;
- }
-
- return hex;
- }
-
- function toRMDstring(hashcode)
- {
- var retString = "";
-
- for (var i=0; i < RMDsize/8; i++)
- {
- retString += toHex32(hashcode[i]);
- }
-
- return retString;
- }
-
-
- function RMDstring(message)
- {
- var hashcode = RMD(message);
- var retString = "";
-
- for (var i=0; i < RMDsize/8; i++)
- {
- retString += toHex32(hashcode[i]);
- }
-
- return retString;
- }
-