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

   1 /**
   2  * TLSPad
   3  *
   4  * A padding implementation used by TLS
   5  * Copyright (c) 2007 Henri Torgemane
   6  *
   7  * See LICENSE.txt for full license information.
   8  */
   9 package com.hurlant.crypto.symmetric {
  10         import flash.utils.ByteArray;
  11         import com.hurlant.util.Hex;
  12         import com.hurlant.crypto.tls.TLSError;
  13
  14         public class SSLPad implements IPad {
  15                 private var blockSize:uint;
  16
  17                 public function SSLPad(blockSize:uint=0) {
  18                         this.blockSize = blockSize;
  19                 }
  20                 public function pad(a:ByteArray):void {
  21                         var c:uint = blockSize - (a.length+1)%blockSize;
  22                         for (var i:uint=0;i<=c;i++) {
  23                                 a[a.length] = c;
  24                         }
  25
  26                 }
  27                 public function unpad(a:ByteArray):void {
  28                         var c:uint = a.length%blockSize;
  29                         if (c!=0) throw new TLSError("SSLPad::unpad: ByteArray.length isn't a multiple of the blockSize", TLSError.bad_record_mac);
  30                         c = a[a.length-1];
  31                         for (var i:uint=c;i>0;i--) {
  32                                 var v:uint = a[a.length-1];
  33                                 a.length--;
  34                                 // But LOOK! SSL 3.0 doesn't care about this, bytes are arbitrary!
  35                                 // if (c!=v) throw new TLSError("SSLPad:unpad: Invalid padding value. expected ["+c+"], found ["+v+"]", TLSError.bad_record_mac);
  36                         }
  37                         a.length--;
  38
  39                 }
  40                 public function setBlockSize(bs:uint):void {
  41                         blockSize = bs;
  42                 }
  43         }
  44 }