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File: secure_area/MD5.as

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File: secure_area/MD5.as
Role: Auxiliary data
Content type: text/plain
Description: algorithm to include md5 hash in flexlogin screen
Class: PXAServer
Library to build applications configured with XML
Author: By
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Date: 16 years ago
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package { public class MD5 { /* * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message * Digest Algorithm, as defined in RFC 1321. * Version 2.2-alpha Copyright (C) Paul Johnston 1999 - 2005 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet * Distributed under the BSD License * See http://pajhome.org.uk/crypt/md5 for more info. * * Converted to AS3 By Geoffrey Williams */ /* * Configurable variables. You may need to tweak these to be compatible with * the server-side, but the defaults work in most cases. */ public static const HEX_FORMAT_LOWERCASE:uint = 1; public static const HEX_FORMAT_UPPERCASE:uint = 0; public static const BASE64_PAD_CHARACTER_DEFAULT_COMPLIANCE:String = ""; public static const BASE64_PAD_CHARACTER_RFC_COMPLIANCE:String = "="; public static var hexcase:uint = 0; /* hex output format. 0 - lowercase; 1 - uppercase */ public static var b64pad:String = ""; /* base-64 pad character. "=" for strict RFC compliance */ public static function encrypt (string:String):String { return hex_md5 (string); } /* * These are the functions you'll usually want to call * They take string arguments and return either hex or base-64 encoded strings */ public static function hex_md5 (string:String):String { return rstr2hex (rstr_md5 (str2rstr_utf8 (string))); } public static function b64_md5 (string:String):String { return rstr2b64 (rstr_md5 (str2rstr_utf8 (string))); } public static function any_md5 (string:String, encoding:String):String { return rstr2any (rstr_md5 (str2rstr_utf8 (string)), encoding); } public static function hex_hmac_md5 (key:String, data:String):String { return rstr2hex (rstr_hmac_md5 (str2rstr_utf8 (key), str2rstr_utf8 (data))); } public static function b64_hmac_md5 (key:String, data:String):String { return rstr2b64 (rstr_hmac_md5 (str2rstr_utf8 (key), str2rstr_utf8 (data))); } public static function any_hmac_md5 (key:String, data:String, encoding:String):String { return rstr2any(rstr_hmac_md5(str2rstr_utf8(key), str2rstr_utf8(data)), encoding); } /* * Perform a simple self-test to see if the VM is working */ public static function md5_vm_test ():Boolean { return hex_md5 ("abc") == "900150983cd24fb0d6963f7d28e17f72"; } /* * Calculate the MD5 of a raw string */ public static function rstr_md5 (string:String):String { return binl2rstr (binl_md5 (rstr2binl (string), string.length * 8)); } /* * Calculate the HMAC-MD5, of a key and some data (raw strings) */ public static function rstr_hmac_md5 (key:String, data:String):String { var bkey:Array = rstr2binl (key); if (bkey.length > 16) bkey = binl_md5 (bkey, key.length * 8); var ipad:Array = new Array(16); var opad:Array = new Array(16); for(var i:Number = 0; i < 16; i++) { ipad[i] = bkey[i] ^ 0x36363636; opad[i] = bkey[i] ^ 0x5C5C5C5C; } var hash:Array = binl_md5 (ipad.concat (rstr2binl (data)), 512 + data.length * 8); return binl2rstr (binl_md5 (opad.concat (hash), 512 + 128)); } /* * Convert a raw string to a hex string */ public static function rstr2hex (input:String):String { var hex_tab:String = hexcase ? "0123456789ABCDEF" : "0123456789abcdef"; var output:String = ""; var x:Number; for(var i:Number = 0; i < input.length; i++) { x = input.charCodeAt(i); output += hex_tab.charAt((x >>> 4) & 0x0F) + hex_tab.charAt( x & 0x0F); } return output; } /* * Convert a raw string to a base-64 string */ public static function rstr2b64 (input:String):String { var tab:String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; var output:String = ""; var len:Number = input.length; for(var i:Number = 0; i < len; i += 3) { var triplet:Number = (input.charCodeAt(i) << 16) | (i + 1 < len ? input.charCodeAt(i+1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i+2) : 0); for(var j:Number = 0; j < 4; j++) { if(i * 8 + j * 6 > input.length * 8) output += b64pad; else output += tab.charAt((triplet >>> 6*(3-j)) & 0x3F); } } return output; } /* * Convert a raw string to an arbitrary string encoding */ public static function rstr2any(input:String, encoding:String):String { var divisor:Number = encoding.length; var remainders:Array = []; var i:Number, q:Number, x:Number, quotient:Array; /* Convert to an array of 16-bit big-endian values, forming the dividend */ var dividend:Array = new Array(input.length / 2); for(i = 0; i < dividend.length; i++) { dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1); } /* * Repeatedly perform a long division. The binary array forms the dividend, * the length of the encoding is the divisor. Once computed, the quotient * forms the dividend for the next step. We stop when the dividend is zero. * All remainders are stored for later use. */ while(dividend.length > 0) { quotient = []; x = 0; for(i = 0; i < dividend.length; i++) { x = (x << 16) + dividend[i]; q = Math.floor(x / divisor); x -= q * divisor; if(quotient.length > 0 || q > 0) quotient[quotient.length] = q; } remainders[remainders.length] = x; dividend = quotient; } /* Convert the remainders to the output string */ var output:String = ""; for(i = remainders.length - 1; i >= 0; i--) output += encoding.charAt (remainders[i]); return output; } /* * Encode a string as utf-8. * For efficiency, this assumes the input is valid utf-16. */ public static function str2rstr_utf8 (input:String):String { var output:String = ""; var i:Number = -1; var x:Number, y:Number; while(++i < input.length) { /* Decode utf-16 surrogate pairs */ x = input.charCodeAt(i); y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0; if(0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) { x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF); i++; } /* Encode output as utf-8 */ if(x <= 0x7F) output += String.fromCharCode(x); else if(x <= 0x7FF) output += String.fromCharCode(0xC0 | ((x >>> 6 ) & 0x1F), 0x80 | ( x & 0x3F)); else if(x <= 0xFFFF) output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F), 0x80 | ((x >>> 6 ) & 0x3F), 0x80 | ( x & 0x3F)); else if(x <= 0x1FFFFF) output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07), 0x80 | ((x >>> 12) & 0x3F), 0x80 | ((x >>> 6 ) & 0x3F), 0x80 | ( x & 0x3F)); } return output; } /* * Encode a string as utf-16 */ public static function str2rstr_utf16le (input:String):String { var output:String = ""; for(var i:Number = 0; i < input.length; i++) output += String.fromCharCode( input.charCodeAt(i) & 0xFF, (input.charCodeAt(i) >>> 8) & 0xFF); return output; } public static function str2rstr_utf16be (input:String):String { var output:String = ""; for(var i:Number = 0; i < input.length; i++) output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF, input.charCodeAt(i) & 0xFF); return output; } /* * Convert a raw string to an array of little-endian words * Characters >255 have their high-byte silently ignored. */ public static function rstr2binl (input:String):Array { var output:Array = new Array(input.length >> 2); var i:Number; for(i = 0; i < output.length; i++) output[i] = 0; for(i = 0; i < input.length * 8; i += 8) output[i>>5] |= (input.charCodeAt(i / 8) & 0xFF) << (i%32); return output; } /* * Convert an array of little-endian words to a string */ public static function binl2rstr (input:Array):String { var output:String = ""; for(var i:Number = 0; i < input.length * 32; i += 8) output += String.fromCharCode((input[i>>5] >>> (i % 32)) & 0xFF); return output; } /* * Calculate the MD5 of an array of little-endian words, and a bit length. */ public static function binl_md5 (x:Array, len:Number):Array { /* append padding */ x[len >> 5] |= 0x80 << ((len) % 32); x[(((len + 64) >>> 9) << 4) + 14] = len; var a:Number = 1732584193; var b:Number = -271733879; var c:Number = -1732584194; var d:Number = 271733878; for(var i:Number = 0; i < x.length; i += 16) { var olda:Number = a; var oldb:Number = b; var oldc:Number = c; var oldd:Number = d; a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936); d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586); c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819); b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330); a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897); d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426); c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341); b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983); a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416); d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417); c = md5_ff(c, d, a, b, x[i+10], 17, -42063); b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162); a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682); d = md5_ff(d, a, b, c, x[i+13], 12, -40341101); c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290); b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329); a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510); d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632); c = md5_gg(c, d, a, b, x[i+11], 14, 643717713); b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302); a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691); d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083); c = md5_gg(c, d, a, b, x[i+15], 14, -660478335); b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848); a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438); d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690); c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961); b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501); a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467); d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784); c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473); b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734); a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558); d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463); c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562); b = md5_hh(b, c, d, a, x[i+14], 23, -35309556); a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060); d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353); c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632); b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640); a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174); d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222); c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979); b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189); a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487); d = md5_hh(d, a, b, c, x[i+12], 11, -421815835); c = md5_hh(c, d, a, b, x[i+15], 16, 530742520); b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651); a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844); d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415); c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905); b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055); a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571); d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606); c = md5_ii(c, d, a, b, x[i+10], 15, -1051523); b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799); a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359); d = md5_ii(d, a, b, c, x[i+15], 10, -30611744); c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380); b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649); a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070); d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379); c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259); b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551); a = safe_add(a, olda); b = safe_add(b, oldb); c = safe_add(c, oldc); d = safe_add(d, oldd); } return [a, b, c, d]; } /* * These functions implement the four basic operations the algorithm uses. */ public static function md5_cmn (q:Number, a:Number, b:Number, x:Number, s:Number, t:Number):Number { return safe_add (bit_rol (safe_add (safe_add (a, q), safe_add(x, t)), s), b); } public static function md5_ff (a:Number, b:Number, c:Number, d:Number, x:Number, s:Number, t:Number):Number { return md5_cmn ((b & c) | ((~b) & d), a, b, x, s, t); } public static function md5_gg (a:Number, b:Number, c:Number, d:Number, x:Number, s:Number, t:Number):Number { return md5_cmn ((b & d) | (c & (~d)), a, b, x, s, t); } public static function md5_hh (a:Number, b:Number, c:Number, d:Number, x:Number, s:Number, t:Number):Number { return md5_cmn (b ^ c ^ d, a, b, x, s, t); } public static function md5_ii (a:Number, b:Number, c:Number, d:Number, x:Number, s:Number, t:Number):Number { return md5_cmn (c ^ (b | (~d)), a, b, x, s, t); } /* * Add integers, wrapping at 2^32. This uses 16-bit operations internally * to work around bugs in some JS interpreters. */ public static function safe_add (x:Number, y:Number):Number { var lsw:Number = (x & 0xFFFF) + (y & 0xFFFF); var msw:Number = (x >> 16) + (y >> 16) + (lsw >> 16); return (msw << 16) | (lsw & 0xFFFF); } /* * Bitwise rotate a 32-bit number to the left. */ public static function bit_rol (num:Number, cnt:Number):Number { return (num << cnt) | (num >>> (32 - cnt)); } } }