private static byte[] RijndaelEncryption(byte[] input, byte[] key, bool encrypt, bool parallel = true)
{
var algorithm = new Rijndael();
int InputBlockLen_byte = algorithm.InputBlockLen_bit/8;
byte[] expandedkey = algorithm.ExpandKey(key);
if (input.Length > 0 && key.Length > 0)
{
int countblocks;
byte[] output;
if (encrypt)
{
int bytestoadd = (InputBlockLen_byte - (input.Length + 1)%InputBlockLen_byte)%InputBlockLen_byte;
int newinputlen = input.Length + bytestoadd + 1;
Array.Resize(ref input, newinputlen);
input[input.Length - 1] = (byte) bytestoadd;
countblocks = newinputlen/InputBlockLen_byte;
output = new byte[newinputlen];
}
else
{
countblocks = input.Length/InputBlockLen_byte;
output = new byte[input.Length];
}
if (parallel)
{
Parallel.For(0, countblocks, delegate(int b)
{
var block = new byte[InputBlockLen_byte];
Buffer.BlockCopy(input, b*InputBlockLen_byte, block, 0, InputBlockLen_byte);
block = encrypt
? algorithm.EncryptBlock(block, expandedkey)
: algorithm.DecryptBlock(block, expandedkey);
Buffer.BlockCopy(block, 0, output, b*InputBlockLen_byte, InputBlockLen_byte);
});
}
else
{
var block = new byte[InputBlockLen_byte];
for (int b = 0; b < countblocks; b++)
{
Buffer.BlockCopy(input, b*InputBlockLen_byte, block, 0, InputBlockLen_byte);
block = encrypt
? algorithm.EncryptBlock(block, expandedkey)
: algorithm.DecryptBlock(block, expandedkey);
Buffer.BlockCopy(block, 0, output, b*InputBlockLen_byte, InputBlockLen_byte);
}
}
if (!encrypt)
{
int countbytestoerase = output[output.Length - 1] + 1;
int newoutputlenght = output.Length - countbytestoerase;
Array.Resize(ref output, newoutputlenght);
}
return output;
}
return null;
}
private static byte[] RijndaelEncryption(byte[] input, byte[] key, bool encrypt, bool parallel = true)
{
var algorithm = new Rijndael();
int InputBlockLen_byte = algorithm.InputBlockLen_bit / 8;
byte[] expandedkey = algorithm.ExpandKey(key);
if (input.Length > 0 && key.Length > 0)
{
int countblocks;
byte[] output;
if (encrypt)
{
int bytestoadd = (InputBlockLen_byte - (input.Length + 1) % InputBlockLen_byte) % InputBlockLen_byte;
int newinputlen = input.Length + bytestoadd + 1;
Array.Resize(ref input, newinputlen);
input[input.Length - 1] = (byte)bytestoadd;
countblocks = newinputlen / InputBlockLen_byte;
output = new byte[newinputlen];
}
else
{
countblocks = input.Length / InputBlockLen_byte;
output = new byte[input.Length];
}
if (parallel)
{
Parallel.For(0, countblocks, delegate(int b)
{
var block = new byte[InputBlockLen_byte];
Buffer.BlockCopy(input, b * InputBlockLen_byte, block, 0, InputBlockLen_byte);
block = encrypt
? algorithm.EncryptBlock(block, expandedkey)
: algorithm.DecryptBlock(block, expandedkey);
Buffer.BlockCopy(block, 0, output, b * InputBlockLen_byte, InputBlockLen_byte);
});
}
else
{
var block = new byte[InputBlockLen_byte];
for (int b = 0; b < countblocks; b++)
{
Buffer.BlockCopy(input, b * InputBlockLen_byte, block, 0, InputBlockLen_byte);
block = encrypt
? algorithm.EncryptBlock(block, expandedkey)
: algorithm.DecryptBlock(block, expandedkey);
Buffer.BlockCopy(block, 0, output, b * InputBlockLen_byte, InputBlockLen_byte);
}
}
if (!encrypt)
{
int countbytestoerase = output[output.Length - 1] + 1;
int newoutputlenght = output.Length - countbytestoerase;
Array.Resize(ref output, newoutputlenght);
}
return(output);
}
return(null);
}
