BcTlsHmac
using Org.BouncyCastle.Crypto.Macs;
using Org.BouncyCastle.Crypto.Parameters;
using System;
namespace Org.BouncyCastle.Tls.Crypto.Impl.BC
{
internal sealed class BcTlsHmac : TlsHmac, TlsMac
{
private readonly HMac m_hmac;
public int InternalBlockSize => m_hmac.GetUnderlyingDigest().GetByteLength();
public int MacLength => m_hmac.GetMacSize();
internal BcTlsHmac(HMac hmac)
{
m_hmac = hmac;
}
public void SetKey(byte[] key, int keyOff, int keyLen)
{
m_hmac.Init(new KeyParameter(key, keyOff, keyLen));
}
public void SetKey(ReadOnlySpan<byte> key)
{
m_hmac.Init(new KeyParameter(key));
}
public void Update(byte[] input, int inOff, int length)
{
m_hmac.BlockUpdate(input, inOff, length);
}
public void Update(ReadOnlySpan<byte> input)
{
m_hmac.BlockUpdate(input);
}
public byte[] CalculateMac()
{
byte[] array = new byte[m_hmac.GetMacSize()];
m_hmac.DoFinal(array, 0);
return array;
}
public void CalculateMac(byte[] output, int outOff)
{
m_hmac.DoFinal(output, outOff);
}
public void Reset()
{
m_hmac.Reset();
}
}
}