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- /*
- * A JavaScript implementation of the RSA Data Security, Inc. MD4 Message
- * Digest Algorithm, as defined in RFC 1320.
- * Version 2.1 Copyright (C) Jerrad Pierce, Paul Johnston 1999 - 2002.
- * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
- * Distributed under the BSD License
- * See http://pajhome.org.uk/crypt/md5 for more info.
- */
-
- var hexcase = 0;
- var b64pad = "";
- var chrsz = 8;
-
- function hex_md4(s){ return binl2hex(core_md4(str2binl(s), s.length * chrsz));}
- function b64_md4(s){ return binl2b64(core_md4(str2binl(s), s.length * chrsz));}
- function str_md4(s){ return binl2str(core_md4(str2binl(s), s.length * chrsz));}
- function hex_hmac_md4(key, data) { return binl2hex(core_hmac_md4(key, data)); }
- function b64_hmac_md4(key, data) { return binl2b64(core_hmac_md4(key, data)); }
- function str_hmac_md4(key, data) { return binl2str(core_hmac_md4(key, data)); }
-
- function md4_vm_test()
- {
- return hex_md4("abc") == "a448017aaf21d8525fc10ae87aa6729d";
- }
-
- function core_md4(x, len)
- {
- x[len >> 5] |= 0x80 << (len % 32);
- x[(((len + 64) >>> 9) << 4) + 14] = len;
-
- var a = 1732584193;
- var b = -271733879;
- var c = -1732584194;
- var d = 271733878;
-
- for(var i = 0; i < x.length; i += 16)
- {
- var olda = a;
- var oldb = b;
- var oldc = c;
- var oldd = d;
-
- a = md4_ff(a, b, c, d, x[i+ 0], 3 );
- d = md4_ff(d, a, b, c, x[i+ 1], 7 );
- c = md4_ff(c, d, a, b, x[i+ 2], 11);
- b = md4_ff(b, c, d, a, x[i+ 3], 19);
- a = md4_ff(a, b, c, d, x[i+ 4], 3 );
- d = md4_ff(d, a, b, c, x[i+ 5], 7 );
- c = md4_ff(c, d, a, b, x[i+ 6], 11);
- b = md4_ff(b, c, d, a, x[i+ 7], 19);
- a = md4_ff(a, b, c, d, x[i+ 8], 3 );
- d = md4_ff(d, a, b, c, x[i+ 9], 7 );
- c = md4_ff(c, d, a, b, x[i+10], 11);
- b = md4_ff(b, c, d, a, x[i+11], 19);
- a = md4_ff(a, b, c, d, x[i+12], 3 );
- d = md4_ff(d, a, b, c, x[i+13], 7 );
- c = md4_ff(c, d, a, b, x[i+14], 11);
- b = md4_ff(b, c, d, a, x[i+15], 19);
-
- a = md4_gg(a, b, c, d, x[i+ 0], 3 );
- d = md4_gg(d, a, b, c, x[i+ 4], 5 );
- c = md4_gg(c, d, a, b, x[i+ 8], 9 );
- b = md4_gg(b, c, d, a, x[i+12], 13);
- a = md4_gg(a, b, c, d, x[i+ 1], 3 );
- d = md4_gg(d, a, b, c, x[i+ 5], 5 );
- c = md4_gg(c, d, a, b, x[i+ 9], 9 );
- b = md4_gg(b, c, d, a, x[i+13], 13);
- a = md4_gg(a, b, c, d, x[i+ 2], 3 );
- d = md4_gg(d, a, b, c, x[i+ 6], 5 );
- c = md4_gg(c, d, a, b, x[i+10], 9 );
- b = md4_gg(b, c, d, a, x[i+14], 13);
- a = md4_gg(a, b, c, d, x[i+ 3], 3 );
- d = md4_gg(d, a, b, c, x[i+ 7], 5 );
- c = md4_gg(c, d, a, b, x[i+11], 9 );
- b = md4_gg(b, c, d, a, x[i+15], 13);
-
- a = md4_hh(a, b, c, d, x[i+ 0], 3 );
- d = md4_hh(d, a, b, c, x[i+ 8], 9 );
- c = md4_hh(c, d, a, b, x[i+ 4], 11);
- b = md4_hh(b, c, d, a, x[i+12], 15);
- a = md4_hh(a, b, c, d, x[i+ 2], 3 );
- d = md4_hh(d, a, b, c, x[i+10], 9 );
- c = md4_hh(c, d, a, b, x[i+ 6], 11);
- b = md4_hh(b, c, d, a, x[i+14], 15);
- a = md4_hh(a, b, c, d, x[i+ 1], 3 );
- d = md4_hh(d, a, b, c, x[i+ 9], 9 );
- c = md4_hh(c, d, a, b, x[i+ 5], 11);
- b = md4_hh(b, c, d, a, x[i+13], 15);
- a = md4_hh(a, b, c, d, x[i+ 3], 3 );
- d = md4_hh(d, a, b, c, x[i+11], 9 );
- c = md4_hh(c, d, a, b, x[i+ 7], 11);
- b = md4_hh(b, c, d, a, x[i+15], 15);
-
- a = safe_add(a, olda);
- b = safe_add(b, oldb);
- c = safe_add(c, oldc);
- d = safe_add(d, oldd);
-
- }
- return Array(a, b, c, d);
-
- }
-
- function md4_cmn(q, a, b, x, s, t)
- {
- return safe_add(rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
- }
- function md4_ff(a, b, c, d, x, s)
- {
- return md4_cmn((b & c) | ((~b) & d), a, 0, x, s, 0);
- }
- function md4_gg(a, b, c, d, x, s)
- {
- return md4_cmn((b & c) | (b & d) | (c & d), a, 0, x, s, 1518500249);
- }
- function md4_hh(a, b, c, d, x, s)
- {
- return md4_cmn(b ^ c ^ d, a, 0, x, s, 1859775393);
- }
-
- /*
- * Calculate the HMAC-MD4, of a key and some data
- */
- function core_hmac_md4(key, data)
- {
- var bkey = str2binl(key);
- if(bkey.length > 16) bkey = core_md4(bkey, key.length * chrsz);
-
- var ipad = Array(16), opad = Array(16);
- for(var i = 0; i < 16; i++)
- {
- ipad[i] = bkey[i] ^ 0x36363636;
- opad[i] = bkey[i] ^ 0x5C5C5C5C;
- }
-
- var hash = core_md4(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
- return core_md4(opad.concat(hash), 512 + 128);
- }
-
- function safe_add(x, y)
- {
- var lsw = (x & 0xFFFF) + (y & 0xFFFF);
- var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
- return (msw << 16) | (lsw & 0xFFFF);
- }
-
- function rol(num, cnt)
- {
- return (num << cnt) | (num >>> (32 - cnt));
- }
-
- function str2binl(str)
- {
- var bin = Array();
- var mask = (1 << chrsz) - 1;
- for(var i = 0; i < str.length * chrsz; i += chrsz)
- bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
- return bin;
- }
-
- function binl2str(bin)
- {
- var str = "";
- var mask = (1 << chrsz) - 1;
- for(var i = 0; i < bin.length * 32; i += chrsz)
- str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
- return str;
- }
-
- function binl2hex(binarray)
- {
- var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
- var str = "";
- for(var i = 0; i < binarray.length * 4; i++)
- {
- str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
- hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
- }
- return str;
- }
-
- function binl2b64(binarray)
- {
- var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
- var str = "";
- for(var i = 0; i < binarray.length * 4; i += 3)
- {
- var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16)
- | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
- | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
- for(var j = 0; j < 4; j++)
- {
- if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
- else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
- }
- }
- return str;
- }
-