X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/04b05946ab640eaf9135a73772b704dd41c323e7..717c14c014e3c988bcb392599a47ffa92630da78:/platforma/static/filebrowser/uploadify/com/adobe/crypto/HMAC.as

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+/*
+  Copyright (c) 2008, Adobe Systems Incorporated
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without 
+  modification, are permitted provided that the following conditions are
+  met:
+
+  * Redistributions of source code must retain the above copyright notice, 
+    this list of conditions and the following disclaimer.
+  
+  * Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the 
+    documentation and/or other materials provided with the distribution.
+  
+  * Neither the name of Adobe Systems Incorporated nor the names of its 
+    contributors may be used to endorse or promote products derived from 
+    this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package com.adobe.crypto {
+	import flash.utils.ByteArray;
+	import flash.utils.Endian;
+	import flash.utils.describeType;
+	/**
+	 * Keyed-Hashing for Message Authentication
+	 * Implementation based on algorithm description at 
+	 * http://www.faqs.org/rfcs/rfc2104.html
+	 */
+	public class HMAC 
+	{
+		/**
+		 * Performs the HMAC hash algorithm using byte arrays.
+		 *
+		 * @param secret The secret key
+		 * @param message The message to hash
+		 * @param algorithm Hash object to use
+		 * @return A string containing the hash value of message
+		 * @langversion ActionScript 3.0
+		 * @playerversion Flash 8.5
+		 * @tiptext
+		 */
+		public static function hash( secret:String, message:String, algorithm:Object = null ):String
+		{
+			var text:ByteArray = new ByteArray();
+			var k_secret:ByteArray = new ByteArray();
+			
+			text.writeUTFBytes(message);
+			k_secret.writeUTFBytes(secret);
+			
+			return hashBytes(k_secret, text, algorithm);
+		}
+		
+		/**
+		 * Performs the HMAC hash algorithm using string.
+		 *
+		 * @param secret The secret key
+		 * @param message The message to hash
+		 * @param algorithm Hash object to use
+		 * @return A string containing the hash value of message
+		 * @langversion ActionScript 3.0
+		 * @playerversion Flash 8.5
+		 * @tiptext
+		 */
+		public static function hashBytes( secret:ByteArray, message:ByteArray, algorithm:Object = null ):String
+		{
+			var ipad:ByteArray = new ByteArray();
+			var opad:ByteArray = new ByteArray();
+			var endian:String = Endian.BIG_ENDIAN;
+			
+			if(algorithm == null){
+				algorithm = MD5;
+			}
+			
+			if ( describeType(algorithm).@name.toString() == "com.adobe.crypto::MD5" ) {
+				endian = Endian.LITTLE_ENDIAN;
+			}
+			
+			if ( secret.length > 64 ) {
+				algorithm.hashBytes(secret);
+				secret = new ByteArray();
+				secret.endian = endian;
+				
+				while ( algorithm.digest.bytesAvailable != 0 ) {
+					secret.writeInt(algorithm.digest.readInt());
+				}
+			}
+
+			secret.length = 64
+			secret.position = 0;
+			for ( var x:int = 0; x < 64; x++ ) {
+				var byte:int = secret.readByte();
+				ipad.writeByte(0x36 ^ byte);
+				opad.writeByte(0x5c ^ byte);
+			}
+			
+			ipad.writeBytes(message);
+			algorithm.hashBytes(ipad);
+			var tmp:ByteArray = new ByteArray();
+			tmp.endian = endian;	
+			
+			while ( algorithm.digest.bytesAvailable != 0 ) {
+				tmp.writeInt(algorithm.digest.readInt());
+			}
+			tmp.position = 0;
+			
+			while ( tmp.bytesAvailable != 0 ) {
+				opad.writeByte(tmp.readUnsignedByte());
+			}
+			return algorithm.hashBytes( opad );
+		}
+		
+	}
+	
+}