1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
// Js_of_ocaml runtime support
// http://www.ocsigen.org/js_of_ocaml/
// Copyright (C) 2010 Jérôme Vouillon
// Laboratoire PPS - CNRS Université Paris Diderot
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, with linking exception;
// either version 2.1 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//Provides: caml_md5_chan
//Requires: caml_md5_string, caml_string_of_array,caml_ml_string_length
function caml_md5_chan(chan,len){
if(len<0){
len=caml_ml_string_length(chan.file.data) - chan.offset;
}
return caml_md5_string(chan.file.data,chan.offset,len);
}
//Provides: caml_md5_string
//Requires: caml_string_of_array, caml_convert_string_to_bytes
var caml_md5_string =
function () {
function add (x, y) { return (x + y) | 0; }
function xx(q,a,b,x,s,t) {
a = add(add(a, q), add(x, t));
return add((a << s) | (a >>> (32 - s)), b);
}
function ff(a,b,c,d,x,s,t) {
return xx((b & c) | ((~b) & d), a, b, x, s, t);
}
function gg(a,b,c,d,x,s,t) {
return xx((b & d) | (c & (~d)), a, b, x, s, t);
}
function hh(a,b,c,d,x,s,t) { return xx(b ^ c ^ d, a, b, x, s, t); }
function ii(a,b,c,d,x,s,t) { return xx(c ^ (b | (~d)), a, b, x, s, t); }
function md5(buffer, length) {
var i = length;
buffer[i >> 2] |= 0x80 << (8 * (i & 3));
for (i = (i & ~0x3) + 8;(i & 0x3F) < 60 ;i += 4)
buffer[(i >> 2) - 1] = 0;
buffer[(i >> 2) -1] = length << 3;
buffer[i >> 2] = (length >> 29) & 0x1FFFFFFF;
var w = [0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476];
for(i = 0; i < buffer.length; i += 16) {
var a = w[0], b = w[1], c = w[2], d = w[3];
a = ff(a, b, c, d, buffer[i+ 0], 7, 0xD76AA478);
d = ff(d, a, b, c, buffer[i+ 1], 12, 0xE8C7B756);
c = ff(c, d, a, b, buffer[i+ 2], 17, 0x242070DB);
b = ff(b, c, d, a, buffer[i+ 3], 22, 0xC1BDCEEE);
a = ff(a, b, c, d, buffer[i+ 4], 7, 0xF57C0FAF);
d = ff(d, a, b, c, buffer[i+ 5], 12, 0x4787C62A);
c = ff(c, d, a, b, buffer[i+ 6], 17, 0xA8304613);
b = ff(b, c, d, a, buffer[i+ 7], 22, 0xFD469501);
a = ff(a, b, c, d, buffer[i+ 8], 7, 0x698098D8);
d = ff(d, a, b, c, buffer[i+ 9], 12, 0x8B44F7AF);
c = ff(c, d, a, b, buffer[i+10], 17, 0xFFFF5BB1);
b = ff(b, c, d, a, buffer[i+11], 22, 0x895CD7BE);
a = ff(a, b, c, d, buffer[i+12], 7, 0x6B901122);
d = ff(d, a, b, c, buffer[i+13], 12, 0xFD987193);
c = ff(c, d, a, b, buffer[i+14], 17, 0xA679438E);
b = ff(b, c, d, a, buffer[i+15], 22, 0x49B40821);
a = gg(a, b, c, d, buffer[i+ 1], 5, 0xF61E2562);
d = gg(d, a, b, c, buffer[i+ 6], 9, 0xC040B340);
c = gg(c, d, a, b, buffer[i+11], 14, 0x265E5A51);
b = gg(b, c, d, a, buffer[i+ 0], 20, 0xE9B6C7AA);
a = gg(a, b, c, d, buffer[i+ 5], 5, 0xD62F105D);
d = gg(d, a, b, c, buffer[i+10], 9, 0x02441453);
c = gg(c, d, a, b, buffer[i+15], 14, 0xD8A1E681);
b = gg(b, c, d, a, buffer[i+ 4], 20, 0xE7D3FBC8);
a = gg(a, b, c, d, buffer[i+ 9], 5, 0x21E1CDE6);
d = gg(d, a, b, c, buffer[i+14], 9, 0xC33707D6);
c = gg(c, d, a, b, buffer[i+ 3], 14, 0xF4D50D87);
b = gg(b, c, d, a, buffer[i+ 8], 20, 0x455A14ED);
a = gg(a, b, c, d, buffer[i+13], 5, 0xA9E3E905);
d = gg(d, a, b, c, buffer[i+ 2], 9, 0xFCEFA3F8);
c = gg(c, d, a, b, buffer[i+ 7], 14, 0x676F02D9);
b = gg(b, c, d, a, buffer[i+12], 20, 0x8D2A4C8A);
a = hh(a, b, c, d, buffer[i+ 5], 4, 0xFFFA3942);
d = hh(d, a, b, c, buffer[i+ 8], 11, 0x8771F681);
c = hh(c, d, a, b, buffer[i+11], 16, 0x6D9D6122);
b = hh(b, c, d, a, buffer[i+14], 23, 0xFDE5380C);
a = hh(a, b, c, d, buffer[i+ 1], 4, 0xA4BEEA44);
d = hh(d, a, b, c, buffer[i+ 4], 11, 0x4BDECFA9);
c = hh(c, d, a, b, buffer[i+ 7], 16, 0xF6BB4B60);
b = hh(b, c, d, a, buffer[i+10], 23, 0xBEBFBC70);
a = hh(a, b, c, d, buffer[i+13], 4, 0x289B7EC6);
d = hh(d, a, b, c, buffer[i+ 0], 11, 0xEAA127FA);
c = hh(c, d, a, b, buffer[i+ 3], 16, 0xD4EF3085);
b = hh(b, c, d, a, buffer[i+ 6], 23, 0x04881D05);
a = hh(a, b, c, d, buffer[i+ 9], 4, 0xD9D4D039);
d = hh(d, a, b, c, buffer[i+12], 11, 0xE6DB99E5);
c = hh(c, d, a, b, buffer[i+15], 16, 0x1FA27CF8);
b = hh(b, c, d, a, buffer[i+ 2], 23, 0xC4AC5665);
a = ii(a, b, c, d, buffer[i+ 0], 6, 0xF4292244);
d = ii(d, a, b, c, buffer[i+ 7], 10, 0x432AFF97);
c = ii(c, d, a, b, buffer[i+14], 15, 0xAB9423A7);
b = ii(b, c, d, a, buffer[i+ 5], 21, 0xFC93A039);
a = ii(a, b, c, d, buffer[i+12], 6, 0x655B59C3);
d = ii(d, a, b, c, buffer[i+ 3], 10, 0x8F0CCC92);
c = ii(c, d, a, b, buffer[i+10], 15, 0xFFEFF47D);
b = ii(b, c, d, a, buffer[i+ 1], 21, 0x85845DD1);
a = ii(a, b, c, d, buffer[i+ 8], 6, 0x6FA87E4F);
d = ii(d, a, b, c, buffer[i+15], 10, 0xFE2CE6E0);
c = ii(c, d, a, b, buffer[i+ 6], 15, 0xA3014314);
b = ii(b, c, d, a, buffer[i+13], 21, 0x4E0811A1);
a = ii(a, b, c, d, buffer[i+ 4], 6, 0xF7537E82);
d = ii(d, a, b, c, buffer[i+11], 10, 0xBD3AF235);
c = ii(c, d, a, b, buffer[i+ 2], 15, 0x2AD7D2BB);
b = ii(b, c, d, a, buffer[i+ 9], 21, 0xEB86D391);
w[0] = add(a, w[0]);
w[1] = add(b, w[1]);
w[2] = add(c, w[2]);
w[3] = add(d, w[3]);
}
var t = new Array(16);
for (var i = 0; i < 4; i++)
for (var j = 0; j < 4; j++)
t[i * 4 + j] = (w[i] >> (8 * j)) & 0xFF;
return t;
}
return function (s, ofs, len) {
// FIX: maybe we should perform the computation by chunk of 64 bytes
// as in http://www.myersdaily.org/joseph/javascript/md5.js
var buf = [];
switch (s.t & 6) {
default:
caml_convert_string_to_bytes(s);
case 0: /* BYTES */
var b = s.c;
for (var i = 0; i < len; i+=4) {
var j = i + ofs;
buf[i>>2] =
b.charCodeAt(j) | (b.charCodeAt(j+1) << 8) |
(b.charCodeAt(j+2) << 16) | (b.charCodeAt(j+3) << 24);
}
for (; i < len; i++) buf[i>>2] |= b.charCodeAt(i + ofs) << (8 * (i & 3));
break;
case 4: /* ARRAY */
var a = s.c;
for (var i = 0; i < len; i+=4) {
var j = i + ofs;
buf[i>>2] = a[j] | (a[j+1] << 8) | (a[j+2] << 16) | (a[j+3] << 24);
}
for (; i < len; i++) buf[i>>2] |= a[i + ofs] << (8 * (i & 3));
}
return caml_string_of_array(md5(buf, len));
}
} ();
|
