public void DecryptData(Stream input, Stream output)
{
GOST28147_89 gost = new GOST28147_89();
gost.SetOptimTable();
byte[] decryptedData = new byte[8];
int cnt = 0;
input.Position = 0;
while ((cnt = input.Read(decryptedData, 0, 8)) != 0)
{
decryptedData = gost.GOSTDataDecrypt(decryptedData);
output.Write(decryptedData, 0, decryptedData.Length);
decryptedData = new byte[8];
}
}
public void EncryptData(Stream input, Stream output)
{
GOST28147_89 gost = new GOST28147_89();
gost.SetOptimTable();
byte[] encryptedData = new byte[4];
int cnt = 0;
input.Position = 0;
while ((cnt = input.Read(encryptedData, 0, 4)) != 0)
{
for (; cnt < 4; ++cnt)
{
encryptedData[cnt] = 0;
}
encryptedData = gost.GOSTDataCrypt(encryptedData);
output.Write(encryptedData, 0, encryptedData.Length);
encryptedData = new byte[4];
}
}