vnfmarket/src/main/webapp/vnfmarket/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/com/hurlant/crypto/symmetric/CBCMode.as

   1 /**\r
   2  * CBCMode\r
   3  * \r
   4  * An ActionScript 3 implementation of the CBC confidentiality mode\r
   5  * Copyright (c) 2007 Henri Torgemane\r
   6  * \r
   7  * See LICENSE.txt for full license information.\r
   8  */\r
   9 package com.hurlant.crypto.symmetric\r
  10 {\r
  11         import flash.utils.ByteArray;\r
  12         \r
  13         /**\r
  14          * CBC confidentiality mode. why not.\r
  15          */\r
  16         public class CBCMode extends IVMode implements IMode\r
  17         {\r
  18                 \r
  19                 public function CBCMode(key:ISymmetricKey, padding:IPad = null) {\r
  20                         super(key, padding);\r
  21                 }\r
  22 \r
  23                 public function encrypt(src:ByteArray):void {\r
  24                         padding.pad(src);\r
  25                         var vector:ByteArray = getIV4e();\r
  26                         for (var i:uint=0;i<src.length;i+=blockSize) {\r
  27                                 for (var j:uint=0;j<blockSize;j++) {\r
  28                                         src[i+j] ^= vector[j];\r
  29                                 }\r
  30                                 key.encrypt(src, i);\r
  31                                 vector.position=0;\r
  32                                 vector.writeBytes(src, i, blockSize);\r
  33                         }\r
  34                 }\r
  35                 public function decrypt(src:ByteArray):void {\r
  36                         var vector:ByteArray = getIV4d();\r
  37                         var tmp:ByteArray = new ByteArray;\r
  38                         for (var i:uint=0;i<src.length;i+=blockSize) {\r
  39                                 tmp.position=0;\r
  40                                 tmp.writeBytes(src, i, blockSize);\r
  41                                 key.decrypt(src, i);\r
  42                                 for (var j:uint=0;j<blockSize;j++) {\r
  43                                         src[i+j] ^= vector[j];\r
  44                                 }\r
  45                                 vector.position=0;\r
  46                                 vector.writeBytes(tmp, 0, blockSize);\r
  47                         }\r
  48                         padding.unpad(src);\r
  49                 }\r
  50                 \r
  51                 public function toString():String {\r
  52                         return key.toString()+"-cbc";\r
  53                 }\r
  54         }\r
  55 }\r