ISO10126d2Padding
A padder that adds ISO10126-2 padding to a block.
using Org.BouncyCastle.Security;
namespace Org.BouncyCastle.Crypto.Paddings
{
public class ISO10126d2Padding : IBlockCipherPadding
{
private SecureRandom m_random;
public string PaddingName => "ISO10126-2";
public void Init(SecureRandom random)
{
m_random = CryptoServicesRegistrar.GetSecureRandom(random);
}
public int AddPadding(byte[] input, int inOff)
{
int num = input.Length - inOff;
if (num > 1)
m_random.NextBytes(input, inOff, num - 1);
input[input.Length - 1] = (byte)num;
return num;
}
public int PadCount(byte[] input)
{
int num = input[input.Length - 1];
if (((input.Length - num) | (num - 1)) >> 31 != 0)
throw new InvalidCipherTextException("pad block corrupted");
return num;
}
}
}