vnfmarket/src/main/webapp/vnfmarket/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/com/hurlant/crypto/symmetric/PKCS5.as

   1 /**\r
   2  * PKCS5\r
   3  * \r
   4  * A padding implementation of PKCS5.\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         public class PKCS5 implements IPad\r
  14         {\r
  15                 private var blockSize:uint;\r
  16                 \r
  17                 public function PKCS5(blockSize:uint=0) {\r
  18                         this.blockSize = blockSize;\r
  19                 }\r
  20                 \r
  21                 public function pad(a:ByteArray):void {\r
  22                         var c:uint = blockSize-a.length%blockSize;\r
  23                         for (var i:uint=0;i<c;i++){\r
  24                                 a[a.length] = c;\r
  25                         }\r
  26                 }\r
  27                 public function unpad(a:ByteArray):void {\r
  28                         var c:uint = a.length%blockSize;\r
  29                         if (c!=0) throw new Error("PKCS#5::unpad: ByteArray.length isn't a multiple of the blockSize");\r
  30                         c = a[a.length-1];\r
  31                         for (var i:uint=c;i>0;i--) {\r
  32                                 var v:uint = a[a.length-1];\r
  33                                 a.length--;\r
  34                                 if (c!=v) throw new Error("PKCS#5:unpad: Invalid padding value. expected ["+c+"], found ["+v+"]");\r
  35                         }\r
  36                         // that is all.\r
  37                 }\r
  38 \r
  39                 public function setBlockSize(bs:uint):void {\r
  40                         blockSize = bs;\r
  41                 }\r
  42 \r
  43         }\r
  44 }