(initialization Vector (iv

IV

IV

IV

IV

 public byte[] rijnKey = new byte[16] { 1 , 10 , 5 , 8 , 9 , 11 , 5 , 99 , 12 , 36 , 25 , 25 , 25 , 69 , 0 , 7 };
 //......
 SymmetricAlgorithm rijn = SymmetricAlgorithm.Create("Rijndael");
 CryptoStream encStream = new CryptoStream(fout , rijn.CreateDecryptor(rijnKey , rijnIV) , CryptoStreamMode.Write);

 //.....
  while (rdlen < totlen)
   {
	len = fin.Read(bin , 0 , 10);
	encStream.Write(bin , 0 , len);
	rdlen = rdlen + len;						
   }
	 encStream.Close();
	 fout.Close();
	 fin.Close();
 }