public byte[] EncryptRecord(byte[] fragment, byte[] mac)
{
int num = fragment.Length + mac.Length;
int num2 = 0;
if (CipherMode == CipherMode.CBC)
{
num++;
num2 = blockSize - num % (int)blockSize;
if (num2 == blockSize)
{
num2 = 0;
}
num += num2;
}
byte[] array = new byte[num];
Buffer.BlockCopy(fragment, 0, array, 0, fragment.Length);
Buffer.BlockCopy(mac, 0, array, fragment.Length, mac.Length);
if (num2 > 0)
{
int num3 = fragment.Length + mac.Length;
for (int i = num3; i < num3 + num2 + 1; i++)
{
array[i] = (byte)num2;
}
}
EncryptionCipher.TransformBlock(array, 0, array.Length, array, 0);
return(array);
}
public byte[] EncryptRecord(byte[] fragment, byte[] mac)
{
// Encryption ( fragment + mac [+ padding + padding_length] )
var length = fragment.Length + mac.Length;
var padlen = 0;
if (CipherMode == CipherMode.CBC)
{
// Calculate padding_length
length++; // keep an extra byte
padlen = blockSize - length % blockSize;
if (padlen == blockSize)
{
padlen = 0;
}
length += padlen;
}
var plain = new byte [length];
Buffer.BlockCopy(fragment, 0, plain, 0, fragment.Length);
Buffer.BlockCopy(mac, 0, plain, fragment.Length, mac.Length);
if (padlen > 0)
{
var start = fragment.Length + mac.Length;
for (var i = start; i < start + padlen + 1; i++)
{
plain[i] = (byte)padlen;
}
}
EncryptionCipher.TransformBlock(plain, 0, plain.Length, plain, 0);
return(plain);
}
