| public ProcessBlock ( byte input, int inOff, byte output, int outOff ) : int | ||
| input | byte | |
| inOff | int | |
| output | byte | |
| outOff | int | |
| 리턴 | int | |
static byte[] decrypt(byte[] byteArray, BlowfishEngine bf)
{
int blockSize = 8;
List<byte> decrypted = new List<byte>();
for (int i = 0; i < byteArray.Length; i = i + blockSize)
{
byte[] blockBytes = new byte[blockSize];
byte[] outBytes = new byte[blockSize];
for (int j = 0; j < blockSize; j++)
{
blockBytes[j] = byteArray[i + j];
}
bf.ProcessBlock(blockBytes, 0, outBytes, 0);
decrypted.AddRange(outBytes);
}
unpad(decrypted);
return decrypted.ToArray();
}
private void decrypt(byte[] value, BlowfishEngine bf)
{
int blockSize = bf.GetBlockSize();
byte[] vector = new byte[blockSize];
for (int i = 0; i < blockSize; i++)
vector[i] = 0;
for (int i = 0; i < value.Length; i += blockSize)
{
byte[] tmp = new byte[blockSize];
bf.ProcessBlock(vector, 0, tmp, 0);
int chunk = Math.Min(blockSize, value.Length - i);
for (int j = 0; j < chunk; j++)
{
vector[j] = value[i + j];
value[(i + j)] = (byte)(value[(i + j)] ^ tmp[j]);
};
};
}
