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

   1 /**\r
   2  * TLSPad\r
   3  * \r
   4  * A padding implementation used by TLS\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         import flash.utils.ByteArray;\r
  11         import com.hurlant.util.Hex;\r
  12         import com.hurlant.crypto.tls.TLSError;\r
  13         \r
  14         public class TLSPad implements IPad {\r
  15                 private var blockSize:uint;\r
  16                 \r
  17                 public function TLSPad(blockSize:uint=0) {\r
  18                         this.blockSize = blockSize;\r
  19                 }\r
  20                 public function pad(a:ByteArray):void {\r
  21                         var c:uint = blockSize - (a.length+1)%blockSize;\r
  22                         for (var i:uint=0;i<=c;i++) {\r
  23                                 a[a.length] = c;\r
  24                         }\r
  25                 }\r
  26                 public function unpad(a:ByteArray):void {\r
  27                         var c:uint = a.length%blockSize;\r
  28                         if (c!=0) throw new TLSError("TLSPad::unpad: ByteArray.length isn't a multiple of the blockSize", TLSError.bad_record_mac);\r
  29                         c = a[a.length-1];\r
  30                         for (var i:uint=c;i>0;i--) {\r
  31                                 var v:uint = a[a.length-1];\r
  32                                 a.length--;\r
  33                                 if (c!=v) throw new TLSError("TLSPad:unpad: Invalid padding value. expected ["+c+"], found ["+v+"]", TLSError.bad_record_mac);\r
  34                         }\r
  35                         a.length--;\r
  36                         // mostly ripped off from PKCS5.as, but with subtle differences\r
  37                 }\r
  38                 public function setBlockSize(bs:uint):void {\r
  39                         blockSize = bs;\r
  40                 }\r
  41         }\r
  42 }