| public EncryptData ( byte UnencryptedData ) : byte[] | ||
| UnencryptedData | byte | The byte array to encrypt. |
| return | byte[] | |
public byte[] EncryptData(byte[] UnencryptedData)
{
int count = UnencryptedData.Length;
int full = (count / BlockSizeByte) * BlockSizeByte;
int rem = count - full;
int total = full + BlockSizeByte;
byte[] output = new byte[BlockSizeByte + total];
_enc_iv.CopyTo(output, 0);
_enc.TransformBlock(UnencryptedData, 0, full, output, BlockSizeByte);
Buffer.BlockCopy(UnencryptedData, full, _temp, 0, rem);
byte padding = (byte) (BlockSizeByte - rem);
for(int i = rem; i < BlockSizeByte; i++) {
_temp[i] = padding;
}
_enc.TransformBlock(_temp, 0, BlockSizeByte, output, output.Length - BlockSizeByte);
_enc_iv.CopyTo(output, 0);
Buffer.BlockCopy(output, output.Length - BlockSizeByte, _enc_iv, 0, BlockSizeByte);
return output;
}
///<summary>Encrypts the packet given a SymmetricEncryption.</summary>
public void Encrypt(SymmetricEncryption se)
{
byte[] to_encrypt = new byte[4 + _data.Length + _signature.Length];
int pos = 0;
NumberSerializer.WriteInt(_data.Length, to_encrypt, pos);
pos += 4;
_data.CopyTo(to_encrypt, pos);
pos += _data.Length;
_signature.CopyTo(to_encrypt, pos);
_encrypted_data = se.EncryptData(to_encrypt);
_update_icpacket = true;
}