ParametersWithIV
using System;
namespace Org.BouncyCastle.Crypto.Parameters
{
public class ParametersWithIV : ICipherParameters
{
private readonly ICipherParameters m_parameters;
private readonly byte[] m_iv;
public int IVLength => m_iv.Length;
public ICipherParameters Parameters => m_parameters;
internal static ICipherParameters ApplyOptionalIV(ICipherParameters parameters, byte[] iv)
{
if (iv != null)
return new ParametersWithIV(parameters, iv);
return parameters;
}
public ParametersWithIV(ICipherParameters parameters, byte[] iv)
: this(parameters, iv, 0, iv.Length)
{
if (iv == null)
throw new ArgumentNullException("iv");
m_parameters = parameters;
m_iv = (byte[])iv.Clone();
}
public ParametersWithIV(ICipherParameters parameters, byte[] iv, int ivOff, int ivLen)
{
if (iv == null)
throw new ArgumentNullException("iv");
m_parameters = parameters;
m_iv = new byte[ivLen];
Array.Copy(iv, ivOff, m_iv, 0, ivLen);
}
private ParametersWithIV(ICipherParameters parameters, int ivLength)
{
if (ivLength < 0)
throw new ArgumentOutOfRangeException("ivLength");
m_parameters = parameters;
m_iv = new byte[ivLength];
}
public void CopyIVTo(byte[] buf, int off, int len)
{
if (m_iv.Length != len)
throw new ArgumentOutOfRangeException("len");
Array.Copy(m_iv, 0, buf, off, len);
}
public byte[] GetIV()
{
return (byte[])m_iv.Clone();
}
}
}