1
<HTML>
2
3<HEAD>
4
5<META http-equiv='Content-Type' content='text/html; charset=gb2312'>
6
7<TITLE>非常流行的JS的md5加密办法</TITLE>
8
9</HEAD>
10
11<BODY >
12
13
14
15<input id=test value=webasp>
16
17<input type=button value=md5 onclick="alert(hex_md5(test.value))">
18
19
20
21
<script>
22
23
var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
24
25var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */
26
27var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */
28
29
30
31/*
32
33 * These are the functions you'll usually want to call
34
35 * They take string arguments and return either hex or base-64 encoded strings
36
37
*/
38
39function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
40
41function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
42
43function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
44
45function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
46
47
48
49/* Backwards compatibility - same as hex_md5() */
50
51function calcMD5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
52
53
54
55/*
56
57 * Perform a simple self-test to see if the VM is working
58
59 */
60
61function md5_vm_test()
62
63{
64
65 return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
66
67}
68
69
70
71/*
72
73 * Calculate the MD5 of an array of little-endian words, and a bit length
74
75 */
76
77function core_md5(x, len)
78
79{
80
81 /* append padding */
82
83 x[len >> 5] |= 0x80 << ((len) % 32);
84
85 x[(((len + 64) >>> 9) << 4) + 14] = len;
86
87
88
89 var a = 1732584193;
90
91 var b = -271733879;
92
93 var c = -1732584194;
94
95 var d = 271733878;
96
97
98
99 for(var i = 0; i < x.length; i += 16)
100
101 {
102
103 var olda = a;
104
105 var oldb = b;
106
107 var oldc = c;
108
109 var oldd = d;
110
111
112
113 a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
114
115 d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
116
117 c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);
118
119 b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
120
121 a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
122
123 d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);
124
125 c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
126
127 b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
128
129 a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);
130
131 d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
132
133 c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
134
135 b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
136
137 a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);
138
139 d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
140
141 c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
142
143 b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);
144
145
146
147 a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
148
149 d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
150
151 c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);
152
153 b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
154
155 a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
156
157 d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);
158
159 c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
160
161 b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
162
163 a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);
164
165 d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
166
167 c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
168
169 b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);
170
171 a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
172
173 d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
174
175 c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);
176
177 b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
178
179
180
181 a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
182
183 d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
184
185 c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);
186
187 b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
188
189 a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
190
191 d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);
192
193 c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
194
195 b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
196
197 a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);
198
199 d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
200
201 c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
202
203 b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);
204
205 a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
206
207 d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
208
209 c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);
210
211 b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
212
213
214
215 a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
216
217 d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);
218
219 c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
220
221 b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
222
223 a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);
224
225 d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
226
227 c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
228
229 b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
230
231 a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);
232
233 d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
234
235 c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
236
237 b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);
238
239 a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
240
241 d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
242
243 c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);
244
245 b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
246
247
248
249 a = safe_add(a, olda);
250
251 b = safe_add(b, oldb);
252
253 c = safe_add(c, oldc);
254
255 d = safe_add(d, oldd);
256
257 }
258
259 return Array(a, b, c, d);
260
261
262
263}
264
265
266
267/*
268
269 * These functions implement the four basic operations the algorithm uses.
270
271 */
272
273function md5_cmn(q, a, b, x, s, t)
274
275{
276
277 return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
278
279}
280
281function md5_ff(a, b, c, d, x, s, t)
282
283{
284
285 return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
286
287}
288
289function md5_gg(a, b, c, d, x, s, t)
290
291{
292
293 return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
294
295}
296
297function md5_hh(a, b, c, d, x, s, t)
298
299{
300
301 return md5_cmn(b ^ c ^ d, a, b, x, s, t);
302
303}
304
305function md5_ii(a, b, c, d, x, s, t)
306
307{
308
309 return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
310
311}
312
313
314
315/*
316
317 * Calculate the HMAC-MD5, of a key and some data
318
319 */
320
321function core_hmac_md5(key, data)
322
323{
324
325 var bkey = str2binl(key);
326
327 if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);
328
329
330
331 var ipad = Array(16), opad = Array(16);
332
333 for(var i = 0; i < 16; i++)
334
335 {
336
337 ipad[i] = bkey[i] ^ 0x36363636;
338
339 opad[i] = bkey[i] ^ 0x5C5C5C5C;
340
341 }
342
343
344
345 var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
346
347 return core_md5(opad.concat(hash), 512 + 128);
348
349}
350
351
352
353/*
354
355 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
356
357 * to work around bugs in some JS interpreters.
358
359 */
360
361function safe_add(x, y)
362
363{
364
365 var lsw = (x & 0xFFFF) + (y & 0xFFFF);
366
367 var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
368
369 return (msw << 16) | (lsw & 0xFFFF);
370
371}
372
373
374
375/*
376
377 * Bitwise rotate a 32-bit number to the left.
378
379 */
380
381function bit_rol(num, cnt)
382
383{
384
385 return (num << cnt) | (num >>> (32 - cnt));
386
387}
388
389
390
391/*
392
393 * Convert a string to an array of little-endian words
394
395 * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
396
397 */
398
399function str2binl(str)
400
401{
402
403 var bin = Array();
404
405 var mask = (1 << chrsz) - 1;
406
407 for(var i = 0; i < str.length * chrsz; i += chrsz)
408
409 bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
410
411 return bin;
412
413}
414
415
416
417/*
418
419 * Convert an array of little-endian words to a hex string.
420
421 */
422
423function binl2hex(binarray)
424
425{
426
427 var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
428
429 var str = "";
430
431 for(var i = 0; i < binarray.length * 4; i++)
432
433 {
434
435 str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
436
437 hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
438
439 }
440
441 return str;
442
443}
444
445
446
447/*
448
449 * Convert an array of little-endian words to a base-64 string
450
451 */
452
453function binl2b64(binarray)
454
455{
456
457 var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
458
459 var str = "";
460
461 for(var i = 0; i < binarray.length * 4; i += 3)
462
463 {
464
465 var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16)
466
467 | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
468
469 | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
470
471 for(var j = 0; j < 4; j++)
472
473 {
474
475 if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
476
477 else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
478
479 }
480
481 }
482
483 return str;
484
485}
486
487</script>
488
489
490
491</BODY></HTML>
492
<HTML>2
3
<HEAD>4
5
<META http-equiv='Content-Type' content='text/html; charset=gb2312'>6
7
<TITLE>非常流行的JS的md5加密办法</TITLE>8
9
</HEAD>10
11
<BODY >12
13
14
15
<input id=test value=webasp>16
17
<input type=button value=md5 onclick="alert(hex_md5(test.value))">18
19
20
21
<script>
22
23
var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
24
25
var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */26
27
var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */28
29
30
31
/*32
33
* These are the functions you'll usually want to call34
35
* They take string arguments and return either hex or base-64 encoded strings36
37
*/38
39
function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}40
41
function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}42
43
function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }44
45
function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }46
47
48
49
/* Backwards compatibility - same as hex_md5() */50
51
function calcMD5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}52
53
54
55
/* 56
57
* Perform a simple self-test to see if the VM is working 58
59
*/60
61
function md5_vm_test()62
63
{64
65
return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";66
67
}68
69
70
71
/*72
73
* Calculate the MD5 of an array of little-endian words, and a bit length74
75
*/76
77
function core_md5(x, len)78
79
{80
81
/* append padding */82
83
x[len >> 5] |= 0x80 << ((len) % 32);84
85
x[(((len + 64) >>> 9) << 4) + 14] = len;86
87
88
89
var a = 1732584193;90
91
var b = -271733879;92
93
var c = -1732584194;94
95
var d = 271733878;96
97
98
99
for(var i = 0; i < x.length; i += 16)100
101
{102
103
var olda = a;104
105
var oldb = b;106
107
var oldc = c;108
109
var oldd = d;110
111
112
113
a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);114
115
d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);116
117
c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);118
119
b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);120
121
a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);122
123
d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);124
125
c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);126
127
b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);128
129
a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);130
131
d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);132
133
c = md5_ff(c, d, a, b, x[i+10], 17, -42063);134
135
b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);136
137
a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);138
139
d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);140
141
c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);142
143
b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);144
145
146
147
a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);148
149
d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);150
151
c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);152
153
b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);154
155
a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);156
157
d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);158
159
c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);160
161
b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);162
163
a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);164
165
d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);166
167
c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);168
169
b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);170
171
a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);172
173
d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);174
175
c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);176
177
b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);178
179
180
181
a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);182
183
d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);184
185
c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);186
187
b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);188
189
a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);190
191
d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);192
193
c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);194
195
b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);196
197
a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);198
199
d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);200
201
c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);202
203
b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);204
205
a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);206
207
d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);208
209
c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);210
211
b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);212
213
214
215
a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);216
217
d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);218
219
c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);220
221
b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);222
223
a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);224
225
d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);226
227
c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);228
229
b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);230
231
a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);232
233
d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);234
235
c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);236
237
b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);238
239
a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);240
241
d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);242
243
c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);244
245
b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);246
247
248
249
a = safe_add(a, olda);250
251
b = safe_add(b, oldb);252
253
c = safe_add(c, oldc);254
255
d = safe_add(d, oldd);256
257
}258
259
return Array(a, b, c, d);260
261
262
263
}264
265
266
267
/*268
269
* These functions implement the four basic operations the algorithm uses.270
271
*/272
273
function md5_cmn(q, a, b, x, s, t)274
275
{276
277
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);278
279
}280
281
function md5_ff(a, b, c, d, x, s, t)282
283
{284
285
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);286
287
}288
289
function md5_gg(a, b, c, d, x, s, t)290
291
{292
293
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);294
295
}296
297
function md5_hh(a, b, c, d, x, s, t)298
299
{300
301
return md5_cmn(b ^ c ^ d, a, b, x, s, t);302
303
}304
305
function md5_ii(a, b, c, d, x, s, t)306
307
{308
309
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);310
311
}312
313
314
315
/*316
317
* Calculate the HMAC-MD5, of a key and some data318
319
*/320
321
function core_hmac_md5(key, data)322
323
{324
325
var bkey = str2binl(key);326
327
if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);328
329
330
331
var ipad = Array(16), opad = Array(16);332
333
for(var i = 0; i < 16; i++) 334
335
{336
337
ipad[i] = bkey[i] ^ 0x36363636;338
339
opad[i] = bkey[i] ^ 0x5C5C5C5C;340
341
}342
343
344
345
var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);346
347
return core_md5(opad.concat(hash), 512 + 128);348
349
}350
351
352
353
/*354
355
* Add integers, wrapping at 2^32. This uses 16-bit operations internally356
357
* to work around bugs in some JS interpreters.358
359
*/360
361
function safe_add(x, y)362
363
{364
365
var lsw = (x & 0xFFFF) + (y & 0xFFFF);366
367
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);368
369
return (msw << 16) | (lsw & 0xFFFF);370
371
}372
373
374
375
/*376
377
* Bitwise rotate a 32-bit number to the left.378
379
*/380
381
function bit_rol(num, cnt)382
383
{384
385
return (num << cnt) | (num >>> (32 - cnt));386
387
}388
389
390
391
/*392
393
* Convert a string to an array of little-endian words394
395
* If chrsz is ASCII, characters >255 have their hi-byte silently ignored.396
397
*/398
399
function str2binl(str)400
401
{402
403
var bin = Array();404
405
var mask = (1 << chrsz) - 1;406
407
for(var i = 0; i < str.length * chrsz; i += chrsz)408
409
bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);410
411
return bin;412
413
}414
415
416
417
/*418
419
* Convert an array of little-endian words to a hex string.420
421
*/422
423
function binl2hex(binarray)424
425
{426
427
var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";428
429
var str = "";430
431
for(var i = 0; i < binarray.length * 4; i++)432
433
{434
435
str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +436
437
hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);438
439
}440
441
return str;442
443
}444
445
446
447
/*448
449
* Convert an array of little-endian words to a base-64 string450
451
*/452
453
function binl2b64(binarray)454
455
{456
457
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";458
459
var str = "";460
461
for(var i = 0; i < binarray.length * 4; i += 3)462
463
{464
465
var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16)466
467
| (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )468
469
| ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);470
471
for(var j = 0; j < 4; j++)472
473
{474
475
if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;476
477
else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);478
479
}480
481
}482
483
return str;484
485
}486
487
</script> 488
489
490
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</BODY></HTML>492