wp/nwyj/.svn/pristine/5e/5e23601fb44d35e55590af5860d7186629edd203.svn-base

if (!dojo._hasResource["dojox.crypto.MD5"]) { // _hasResource checks added by
												// build. Do not use
												// _hasResource directly in your
												// code.
	dojo._hasResource["dojox.crypto.MD5"] = true;
	dojo.provide("dojox.crypto.MD5");

	dojo.require("dojox.crypto._base");

	/*
	 * Return to a port of Paul Johnstone's MD5 implementation
	 * http://pajhome.org.uk/crypt/md5/index.html
	 * 
	 * Copyright (C) Paul Johnston 1999 - 2002. Other contributors: Greg Holt,
	 * Andrew Kepert, Ydnar, Lostinet Distributed under the BSD License
	 * 
	 * Dojo port by Tom Trenka
	 * 
	 * 2005-12-7 All conversions are internalized (no dependencies) implemented
	 * getHMAC for message digest auth.
	 */
	dojox.crypto.MD5 = new function() {
		// summary
		// object for creating digests using the MD5 algorithm
		var chrsz = 8;
		var mask = (1 << chrsz) - 1;
		function toWord(s) {
			var wa = [];
			for (var i = 0; i < s.length * chrsz; i += chrsz)
				wa[i >> 5] |= (s.charCodeAt(i / chrsz) & mask) << (i % 32);
			return wa;
		}
		function toString(wa) {
			var s = [];
			for (var i = 0; i < wa.length * 32; i += chrsz)
				s.push(String.fromCharCode((wa[i >> 5] >>> (i % 32)) & mask));
			return s.join("");
		}
		function toHex(wa) {
			var h = "0123456789abcdef";
			var s = [];
			for (var i = 0; i < wa.length * 4; i++) {
				s.push(h.charAt((wa[i >> 2] >> ((i % 4) * 8 + 4)) & 0xF)
						+ h.charAt((wa[i >> 2] >> ((i % 4) * 8)) & 0xF));
			}
			return s.join("");
		}
		function toBase64(wa) {
			var p = "=";
			var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
			var s = [];
			for (var i = 0; i < wa.length * 4; i += 3) {
				var t = (((wa[i >> 2] >> 8 * (i % 4)) & 0xFF) << 16)
						| (((wa[i + 1 >> 2] >> 8 * ((i + 1) % 4)) & 0xFF) << 8)
						| ((wa[i + 2 >> 2] >> 8 * ((i + 2) % 4)) & 0xFF);
				for (var j = 0; j < 4; j++) {
					if (i * 8 + j * 6 > wa.length * 32)
						s.push(p);
					else
						s.push(tab.charAt((t >> 6 * (3 - j)) & 0x3F));
				}
			}
			return s.join("");
		}
		function add(x, y) {
			var l = (x & 0xFFFF) + (y & 0xFFFF);
			var m = (x >> 16) + (y >> 16) + (l >> 16);
			return (m << 16) | (l & 0xFFFF);
		}
		function R(n, c) {
			return (n << c) | (n >>> (32 - c));
		}
		function C(q, a, b, x, s, t) {
			return add(R(add(add(a, q), add(x, t)), s), b);
		}
		function FF(a, b, c, d, x, s, t) {
			return C((b & c) | ((~b) & d), a, b, x, s, t);
		}
		function GG(a, b, c, d, x, s, t) {
			return C((b & d) | (c & (~d)), a, b, x, s, t);
		}
		function HH(a, b, c, d, x, s, t) {
			return C(b ^ c ^ d, a, b, x, s, t);
		}
		function II(a, b, c, d, x, s, t) {
			return C(c ^ (b | (~d)), a, b, x, s, t);
		}
		function core(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 = FF(a, b, c, d, x[i + 0], 7, -680876936);
				d = FF(d, a, b, c, x[i + 1], 12, -389564586);
				c = FF(c, d, a, b, x[i + 2], 17, 606105819);
				b = FF(b, c, d, a, x[i + 3], 22, -1044525330);
				a = FF(a, b, c, d, x[i + 4], 7, -176418897);
				d = FF(d, a, b, c, x[i + 5], 12, 1200080426);
				c = FF(c, d, a, b, x[i + 6], 17, -1473231341);
				b = FF(b, c, d, a, x[i + 7], 22, -45705983);
				a = FF(a, b, c, d, x[i + 8], 7, 1770035416);
				d = FF(d, a, b, c, x[i + 9], 12, -1958414417);
				c = FF(c, d, a, b, x[i + 10], 17, -42063);
				b = FF(b, c, d, a, x[i + 11], 22, -1990404162);
				a = FF(a, b, c, d, x[i + 12], 7, 1804603682);
				d = FF(d, a, b, c, x[i + 13], 12, -40341101);
				c = FF(c, d, a, b, x[i + 14], 17, -1502002290);
				b = FF(b, c, d, a, x[i + 15], 22, 1236535329);

				a = GG(a, b, c, d, x[i + 1], 5, -165796510);
				d = GG(d, a, b, c, x[i + 6], 9, -1069501632);
				c = GG(c, d, a, b, x[i + 11], 14, 643717713);
				b = GG(b, c, d, a, x[i + 0], 20, -373897302);
				a = GG(a, b, c, d, x[i + 5], 5, -701558691);
				d = GG(d, a, b, c, x[i + 10], 9, 38016083);
				c = GG(c, d, a, b, x[i + 15], 14, -660478335);
				b = GG(b, c, d, a, x[i + 4], 20, -405537848);
				a = GG(a, b, c, d, x[i + 9], 5, 568446438);
				d = GG(d, a, b, c, x[i + 14], 9, -1019803690);
				c = GG(c, d, a, b, x[i + 3], 14, -187363961);
				b = GG(b, c, d, a, x[i + 8], 20, 1163531501);
				a = GG(a, b, c, d, x[i + 13], 5, -1444681467);
				d = GG(d, a, b, c, x[i + 2], 9, -51403784);
				c = GG(c, d, a, b, x[i + 7], 14, 1735328473);
				b = GG(b, c, d, a, x[i + 12], 20, -1926607734);

				a = HH(a, b, c, d, x[i + 5], 4, -378558);
				d = HH(d, a, b, c, x[i + 8], 11, -2022574463);
				c = HH(c, d, a, b, x[i + 11], 16, 1839030562);
				b = HH(b, c, d, a, x[i + 14], 23, -35309556);
				a = HH(a, b, c, d, x[i + 1], 4, -1530992060);
				d = HH(d, a, b, c, x[i + 4], 11, 1272893353);
				c = HH(c, d, a, b, x[i + 7], 16, -155497632);
				b = HH(b, c, d, a, x[i + 10], 23, -1094730640);
				a = HH(a, b, c, d, x[i + 13], 4, 681279174);
				d = HH(d, a, b, c, x[i + 0], 11, -358537222);
				c = HH(c, d, a, b, x[i + 3], 16, -722521979);
				b = HH(b, c, d, a, x[i + 6], 23, 76029189);
				a = HH(a, b, c, d, x[i + 9], 4, -640364487);
				d = HH(d, a, b, c, x[i + 12], 11, -421815835);
				c = HH(c, d, a, b, x[i + 15], 16, 530742520);
				b = HH(b, c, d, a, x[i + 2], 23, -995338651);

				a = II(a, b, c, d, x[i + 0], 6, -198630844);
				d = II(d, a, b, c, x[i + 7], 10, 1126891415);
				c = II(c, d, a, b, x[i + 14], 15, -1416354905);
				b = II(b, c, d, a, x[i + 5], 21, -57434055);
				a = II(a, b, c, d, x[i + 12], 6, 1700485571);
				d = II(d, a, b, c, x[i + 3], 10, -1894986606);
				c = II(c, d, a, b, x[i + 10], 15, -1051523);
				b = II(b, c, d, a, x[i + 1], 21, -2054922799);
				a = II(a, b, c, d, x[i + 8], 6, 1873313359);
				d = II(d, a, b, c, x[i + 15], 10, -30611744);
				c = II(c, d, a, b, x[i + 6], 15, -1560198380);
				b = II(b, c, d, a, x[i + 13], 21, 1309151649);
				a = II(a, b, c, d, x[i + 4], 6, -145523070);
				d = II(d, a, b, c, x[i + 11], 10, -1120210379);
				c = II(c, d, a, b, x[i + 2], 15, 718787259);
				b = II(b, c, d, a, x[i + 9], 21, -343485551);

				a = add(a, olda);
				b = add(b, oldb);
				c = add(c, oldc);
				d = add(d, oldd);
			}
			return [a, b, c, d];
		}
		function hmac(data, key) {
			var wa = toWord(key);
			if (wa.length > 16)
				wa = core(wa, key.length * chrsz);
			var l = [], r = [];
			for (var i = 0; i < 16; i++) {
				l[i] = wa[i] ^ 0x36363636;
				r[i] = wa[i] ^ 0x5c5c5c5c;
			}
			var h = core(l.concat(toWord(data)), 512 + data.length * chrsz);
			return core(r.concat(h), 640);
		}

		// Public functions
		this.compute = function(/* string */data, /* dojox.crypto.outputTypes */
				outputType) {
			// summary
			// computes the digest of data, and returns the result as a string
			// of type outputType
			var out = outputType || dojox.crypto.outputTypes.Base64;
			switch (out) {
				case dojox.crypto.outputTypes.Hex : {
					return toHex(core(toWord(data), data.length * chrsz)); // string
				}
				case dojox.crypto.outputTypes.String : {
					return toString(core(toWord(data), data.length * chrsz)); // string
				}
				default : {
					return toBase64(core(toWord(data), data.length * chrsz)); // string
				}
			}
		};
		this.getHMAC = function(/* string */data, /* string */key, /* dojox.crypto.outputTypes */
				outputType) {
			// summary
			// computes a digest of data using key, and returns the result as a
			// string of outputType
			var out = outputType || dojox.crypto.outputTypes.Base64;
			switch (out) {
				case dojox.crypto.outputTypes.Hex : {
					return toHex(hmac(data, key)); // string
				}
				case dojox.crypto.outputTypes.String : {
					return toString(hmac(data, key)); // string
				}
				default : {
					return toBase64(hmac(data, key)); // string
				}
			}
		};
	}();

}