2 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
3 * Digest Algorithm, as defined in RFC 1321.
4 * Copyright (C) Paul Johnston 1999 - 2000.
5 * Updated by Greg Holt 2000 - 2001.
6 * See http://pajhome.org.uk/site/legal.html for details.
10 * Convert a 32-bit number to a hex string with ls-byte first
12 var hex_chr = "0123456789abcdef";
16 for(j = 0; j <= 3; j++)
17 str += hex_chr.charAt((num >> (j * 8 + 4)) & 0x0F) +
18 hex_chr.charAt((num >> (j * 8)) & 0x0F);
23 * Convert a string to a sequence of 16-word blocks, stored as an array.
24 * Append padding bits and the length, as described in the MD5 standard.
26 function str2blks_MD5(str)
28 nblk = ((str.length + 8) >> 6) + 1;
29 blks = new Array(nblk * 16);
30 for(i = 0; i < nblk * 16; i++) blks[i] = 0;
31 for(i = 0; i < str.length; i++)
32 blks[i >> 2] |= str.charCodeAt(i) << ((i % 4) * 8);
33 blks[i >> 2] |= 0x80 << ((i % 4) * 8);
34 blks[nblk * 16 - 2] = str.length * 8;
39 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
40 * to work around bugs in some JS interpreters.
44 var lsw = (x & 0xFFFF) + (y & 0xFFFF);
45 var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
46 return (msw << 16) | (lsw & 0xFFFF);
50 * Bitwise rotate a 32-bit number to the left
52 function rol(num, cnt)
54 return (num << cnt) | (num >>> (32 - cnt));
58 * These functions implement the basic operation for each round of the
61 function cmn(q, a, b, x, s, t)
63 return add(rol(add(add(a, q), add(x, t)), s), b);
65 function ff(a, b, c, d, x, s, t)
67 return cmn((b & c) | ((~b) & d), a, b, x, s, t);
69 function gg(a, b, c, d, x, s, t)
71 return cmn((b & d) | (c & (~d)), a, b, x, s, t);
73 function hh(a, b, c, d, x, s, t)
75 return cmn(b ^ c ^ d, a, b, x, s, t);
77 function ii(a, b, c, d, x, s, t)
79 return cmn(c ^ (b | (~d)), a, b, x, s, t);
83 * Take a string and return the hex representation of its MD5.
87 x = str2blks_MD5(str);
93 for(i = 0; i < x.length; i += 16)
100 a = ff(a, b, c, d, x[i+ 0], 7 , -680876936);
101 d = ff(d, a, b, c, x[i+ 1], 12, -389564586);
102 c = ff(c, d, a, b, x[i+ 2], 17, 606105819);
103 b = ff(b, c, d, a, x[i+ 3], 22, -1044525330);
104 a = ff(a, b, c, d, x[i+ 4], 7 , -176418897);
105 d = ff(d, a, b, c, x[i+ 5], 12, 1200080426);
106 c = ff(c, d, a, b, x[i+ 6], 17, -1473231341);
107 b = ff(b, c, d, a, x[i+ 7], 22, -45705983);
108 a = ff(a, b, c, d, x[i+ 8], 7 , 1770035416);
109 d = ff(d, a, b, c, x[i+ 9], 12, -1958414417);
110 c = ff(c, d, a, b, x[i+10], 17, -42063);
111 b = ff(b, c, d, a, x[i+11], 22, -1990404162);
112 a = ff(a, b, c, d, x[i+12], 7 , 1804603682);
113 d = ff(d, a, b, c, x[i+13], 12, -40341101);
114 c = ff(c, d, a, b, x[i+14], 17, -1502002290);
115 b = ff(b, c, d, a, x[i+15], 22, 1236535329);
117 a = gg(a, b, c, d, x[i+ 1], 5 , -165796510);
118 d = gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
119 c = gg(c, d, a, b, x[i+11], 14, 643717713);
120 b = gg(b, c, d, a, x[i+ 0], 20, -373897302);
121 a = gg(a, b, c, d, x[i+ 5], 5 , -701558691);
122 d = gg(d, a, b, c, x[i+10], 9 , 38016083);
123 c = gg(c, d, a, b, x[i+15], 14, -660478335);
124 b = gg(b, c, d, a, x[i+ 4], 20, -405537848);
125 a = gg(a, b, c, d, x[i+ 9], 5 , 568446438);
126 d = gg(d, a, b, c, x[i+14], 9 , -1019803690);
127 c = gg(c, d, a, b, x[i+ 3], 14, -187363961);
128 b = gg(b, c, d, a, x[i+ 8], 20, 1163531501);
129 a = gg(a, b, c, d, x[i+13], 5 , -1444681467);
130 d = gg(d, a, b, c, x[i+ 2], 9 , -51403784);
131 c = gg(c, d, a, b, x[i+ 7], 14, 1735328473);
132 b = gg(b, c, d, a, x[i+12], 20, -1926607734);
134 a = hh(a, b, c, d, x[i+ 5], 4 , -378558);
135 d = hh(d, a, b, c, x[i+ 8], 11, -2022574463);
136 c = hh(c, d, a, b, x[i+11], 16, 1839030562);
137 b = hh(b, c, d, a, x[i+14], 23, -35309556);
138 a = hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
139 d = hh(d, a, b, c, x[i+ 4], 11, 1272893353);
140 c = hh(c, d, a, b, x[i+ 7], 16, -155497632);
141 b = hh(b, c, d, a, x[i+10], 23, -1094730640);
142 a = hh(a, b, c, d, x[i+13], 4 , 681279174);
143 d = hh(d, a, b, c, x[i+ 0], 11, -358537222);
144 c = hh(c, d, a, b, x[i+ 3], 16, -722521979);
145 b = hh(b, c, d, a, x[i+ 6], 23, 76029189);
146 a = hh(a, b, c, d, x[i+ 9], 4 , -640364487);
147 d = hh(d, a, b, c, x[i+12], 11, -421815835);
148 c = hh(c, d, a, b, x[i+15], 16, 530742520);
149 b = hh(b, c, d, a, x[i+ 2], 23, -995338651);
151 a = ii(a, b, c, d, x[i+ 0], 6 , -198630844);
152 d = ii(d, a, b, c, x[i+ 7], 10, 1126891415);
153 c = ii(c, d, a, b, x[i+14], 15, -1416354905);
154 b = ii(b, c, d, a, x[i+ 5], 21, -57434055);
155 a = ii(a, b, c, d, x[i+12], 6 , 1700485571);
156 d = ii(d, a, b, c, x[i+ 3], 10, -1894986606);
157 c = ii(c, d, a, b, x[i+10], 15, -1051523);
158 b = ii(b, c, d, a, x[i+ 1], 21, -2054922799);
159 a = ii(a, b, c, d, x[i+ 8], 6 , 1873313359);
160 d = ii(d, a, b, c, x[i+15], 10, -30611744);
161 c = ii(c, d, a, b, x[i+ 6], 15, -1560198380);
162 b = ii(b, c, d, a, x[i+13], 21, 1309151649);
163 a = ii(a, b, c, d, x[i+ 4], 6 , -145523070);
164 d = ii(d, a, b, c, x[i+11], 10, -1120210379);
165 c = ii(c, d, a, b, x[i+ 2], 15, 718787259);
166 b = ii(b, c, d, a, x[i+ 9], 21, -343485551);
173 return rhex(a) + rhex(b) + rhex(c) + rhex(d);
176 function createkey () {
178 var sum = 12345, mul = 54321;
180 tot = document.forms.auth.i_key.value+document.forms.auth.i_login.value+document.forms.auth.i_pass.value;
181 document.forms.auth.i_backpass.value=calcMD5(tot);
182 document.forms.auth.i_pass.value='';