|
1 /* |
|
2 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message |
|
3 * Digest Algorithm, as defined in RFC 1321. |
|
4 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002. |
|
5 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet |
|
6 * Distributed under the BSD License |
|
7 * See http://pajhome.org.uk/crypt/md5 for more info. |
|
8 */ |
|
9 |
|
10 /* |
|
11 * Configurable variables. You may need to tweak these to be compatible with |
|
12 * the server-side, but the defaults work in most cases. |
|
13 */ |
|
14 var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */ |
|
15 var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */ |
|
16 var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */ |
|
17 |
|
18 /* |
|
19 * These are the functions you'll usually want to call |
|
20 * They take string arguments and return either hex or base-64 encoded strings |
|
21 */ |
|
22 function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));} |
|
23 function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));} |
|
24 function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));} |
|
25 function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); } |
|
26 function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); } |
|
27 function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); } |
|
28 |
|
29 /* |
|
30 * Perform a simple self-test to see if the VM is working |
|
31 */ |
|
32 function md5_vm_test() |
|
33 { |
|
34 return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72"; |
|
35 } |
|
36 |
|
37 /* |
|
38 * Calculate the MD5 of an array of little-endian words, and a bit length |
|
39 */ |
|
40 function core_md5(x, len) |
|
41 { |
|
42 /* append padding */ |
|
43 x[len >> 5] |= 0x80 << ((len) % 32); |
|
44 x[(((len + 64) >>> 9) << 4) + 14] = len; |
|
45 |
|
46 var a = 1732584193; |
|
47 var b = -271733879; |
|
48 var c = -1732584194; |
|
49 var d = 271733878; |
|
50 |
|
51 for(var i = 0; i < x.length; i += 16) |
|
52 { |
|
53 var olda = a; |
|
54 var oldb = b; |
|
55 var oldc = c; |
|
56 var oldd = d; |
|
57 |
|
58 a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936); |
|
59 d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586); |
|
60 c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819); |
|
61 b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330); |
|
62 a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897); |
|
63 d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426); |
|
64 c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341); |
|
65 b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983); |
|
66 a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416); |
|
67 d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417); |
|
68 c = md5_ff(c, d, a, b, x[i+10], 17, -42063); |
|
69 b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162); |
|
70 a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682); |
|
71 d = md5_ff(d, a, b, c, x[i+13], 12, -40341101); |
|
72 c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290); |
|
73 b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329); |
|
74 |
|
75 a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510); |
|
76 d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632); |
|
77 c = md5_gg(c, d, a, b, x[i+11], 14, 643717713); |
|
78 b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302); |
|
79 a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691); |
|
80 d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083); |
|
81 c = md5_gg(c, d, a, b, x[i+15], 14, -660478335); |
|
82 b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848); |
|
83 a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438); |
|
84 d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690); |
|
85 c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961); |
|
86 b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501); |
|
87 a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467); |
|
88 d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784); |
|
89 c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473); |
|
90 b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734); |
|
91 |
|
92 a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558); |
|
93 d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463); |
|
94 c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562); |
|
95 b = md5_hh(b, c, d, a, x[i+14], 23, -35309556); |
|
96 a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060); |
|
97 d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353); |
|
98 c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632); |
|
99 b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640); |
|
100 a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174); |
|
101 d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222); |
|
102 c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979); |
|
103 b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189); |
|
104 a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487); |
|
105 d = md5_hh(d, a, b, c, x[i+12], 11, -421815835); |
|
106 c = md5_hh(c, d, a, b, x[i+15], 16, 530742520); |
|
107 b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651); |
|
108 |
|
109 a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844); |
|
110 d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415); |
|
111 c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905); |
|
112 b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055); |
|
113 a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571); |
|
114 d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606); |
|
115 c = md5_ii(c, d, a, b, x[i+10], 15, -1051523); |
|
116 b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799); |
|
117 a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359); |
|
118 d = md5_ii(d, a, b, c, x[i+15], 10, -30611744); |
|
119 c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380); |
|
120 b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649); |
|
121 a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070); |
|
122 d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379); |
|
123 c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259); |
|
124 b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551); |
|
125 |
|
126 a = safe_add(a, olda); |
|
127 b = safe_add(b, oldb); |
|
128 c = safe_add(c, oldc); |
|
129 d = safe_add(d, oldd); |
|
130 } |
|
131 return Array(a, b, c, d); |
|
132 |
|
133 } |
|
134 |
|
135 /* |
|
136 * These functions implement the four basic operations the algorithm uses. |
|
137 */ |
|
138 function md5_cmn(q, a, b, x, s, t) |
|
139 { |
|
140 return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b); |
|
141 } |
|
142 function md5_ff(a, b, c, d, x, s, t) |
|
143 { |
|
144 return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t); |
|
145 } |
|
146 function md5_gg(a, b, c, d, x, s, t) |
|
147 { |
|
148 return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t); |
|
149 } |
|
150 function md5_hh(a, b, c, d, x, s, t) |
|
151 { |
|
152 return md5_cmn(b ^ c ^ d, a, b, x, s, t); |
|
153 } |
|
154 function md5_ii(a, b, c, d, x, s, t) |
|
155 { |
|
156 return md5_cmn(c ^ (b | (~d)), a, b, x, s, t); |
|
157 } |
|
158 |
|
159 /* |
|
160 * Calculate the HMAC-MD5, of a key and some data |
|
161 */ |
|
162 function core_hmac_md5(key, data) |
|
163 { |
|
164 var bkey = str2binl(key); |
|
165 if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz); |
|
166 |
|
167 var ipad = Array(16), opad = Array(16); |
|
168 for(var i = 0; i < 16; i++) |
|
169 { |
|
170 ipad[i] = bkey[i] ^ 0x36363636; |
|
171 opad[i] = bkey[i] ^ 0x5C5C5C5C; |
|
172 } |
|
173 |
|
174 var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz); |
|
175 return core_md5(opad.concat(hash), 512 + 128); |
|
176 } |
|
177 |
|
178 /* |
|
179 * Add integers, wrapping at 2^32. This uses 16-bit operations internally |
|
180 * to work around bugs in some JS interpreters. |
|
181 */ |
|
182 function safe_add(x, y) |
|
183 { |
|
184 var lsw = (x & 0xFFFF) + (y & 0xFFFF); |
|
185 var msw = (x >> 16) + (y >> 16) + (lsw >> 16); |
|
186 return (msw << 16) | (lsw & 0xFFFF); |
|
187 } |
|
188 |
|
189 /* |
|
190 * Bitwise rotate a 32-bit number to the left. |
|
191 */ |
|
192 function bit_rol(num, cnt) |
|
193 { |
|
194 return (num << cnt) | (num >>> (32 - cnt)); |
|
195 } |
|
196 |
|
197 /* |
|
198 * Convert a string to an array of little-endian words |
|
199 * If chrsz is ASCII, characters >255 have their hi-byte silently ignored. |
|
200 */ |
|
201 function str2binl(str) |
|
202 { |
|
203 var bin = Array(); |
|
204 var mask = (1 << chrsz) - 1; |
|
205 for(var i = 0; i < str.length * chrsz; i += chrsz) |
|
206 bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32); |
|
207 return bin; |
|
208 } |
|
209 |
|
210 /* |
|
211 * Convert an array of little-endian words to a string |
|
212 */ |
|
213 function binl2str(bin) |
|
214 { |
|
215 var str = ""; |
|
216 var mask = (1 << chrsz) - 1; |
|
217 for(var i = 0; i < bin.length * 32; i += chrsz) |
|
218 str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask); |
|
219 return str; |
|
220 } |
|
221 |
|
222 /* |
|
223 * Convert an array of little-endian words to a hex string. |
|
224 */ |
|
225 function binl2hex(binarray) |
|
226 { |
|
227 var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef"; |
|
228 var str = ""; |
|
229 for(var i = 0; i < binarray.length * 4; i++) |
|
230 { |
|
231 str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) + |
|
232 hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF); |
|
233 } |
|
234 return str; |
|
235 } |
|
236 |
|
237 /* |
|
238 * Convert an array of little-endian words to a base-64 string |
|
239 */ |
|
240 function binl2b64(binarray) |
|
241 { |
|
242 var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
|
243 var str = ""; |
|
244 for(var i = 0; i < binarray.length * 4; i += 3) |
|
245 { |
|
246 var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16) |
|
247 | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 ) |
|
248 | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF); |
|
249 for(var j = 0; j < 4; j++) |
|
250 { |
|
251 if(i * 8 + j * 6 > binarray.length * 32) str += b64pad; |
|
252 else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F); |
|
253 } |
|
254 } |
|
255 return str; |
|
256 } |
|
257 |
|
258 var plainText = "Rebellious subjects, enemies to peace,\n\ |
|
259 Profaners of this neighbour-stained steel,--\n\ |
|
260 Will they not hear? What, ho! you men, you beasts,\n\ |
|
261 That quench the fire of your pernicious rage\n\ |
|
262 With purple fountains issuing from your veins,\n\ |
|
263 On pain of torture, from those bloody hands\n\ |
|
264 Throw your mistemper'd weapons to the ground,\n\ |
|
265 And hear the sentence of your moved prince.\n\ |
|
266 Three civil brawls, bred of an airy word,\n\ |
|
267 By thee, old Capulet, and Montague,\n\ |
|
268 Have thrice disturb'd the quiet of our streets,\n\ |
|
269 And made Verona's ancient citizens\n\ |
|
270 Cast by their grave beseeming ornaments,\n\ |
|
271 To wield old partisans, in hands as old,\n\ |
|
272 Canker'd with peace, to part your canker'd hate:\n\ |
|
273 If ever you disturb our streets again,\n\ |
|
274 Your lives shall pay the forfeit of the peace.\n\ |
|
275 For this time, all the rest depart away:\n\ |
|
276 You Capulet; shall go along with me:\n\ |
|
277 And, Montague, come you this afternoon,\n\ |
|
278 To know our further pleasure in this case,\n\ |
|
279 To old Free-town, our common judgment-place.\n\ |
|
280 Once more, on pain of death, all men depart." |
|
281 |
|
282 for (var i = 0; i <4; i++) { |
|
283 plainText += plainText; |
|
284 } |
|
285 |
|
286 var md5Output = hex_md5(plainText); |