CombinedHash
A combined hash, which implements md5(m) || sha1(m).
using Org.BouncyCastle.Tls.Crypto;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Tls
{
public class CombinedHash : TlsHash
{
protected readonly TlsContext m_context;
protected readonly TlsCrypto m_crypto;
protected readonly TlsHash m_md5;
protected readonly TlsHash m_sha1;
internal CombinedHash(TlsContext context, TlsHash md5, TlsHash sha1)
{
m_context = context;
m_crypto = context.Crypto;
m_md5 = md5;
m_sha1 = sha1;
}
public CombinedHash(TlsCrypto crypto)
{
m_crypto = crypto;
m_md5 = crypto.CreateHash(1);
m_sha1 = crypto.CreateHash(2);
}
public CombinedHash(CombinedHash t)
{
m_context = t.m_context;
m_crypto = t.m_crypto;
m_md5 = t.m_md5.CloneHash();
m_sha1 = t.m_sha1.CloneHash();
}
public virtual void Update(byte[] input, int inOff, int len)
{
m_md5.Update(input, inOff, len);
m_sha1.Update(input, inOff, len);
}
public virtual byte[] CalculateHash()
{
if (m_context != null && TlsUtilities.IsSsl(m_context))
Ssl3Utilities.CompleteCombinedHash(m_context, m_md5, m_sha1);
return Arrays.Concatenate(m_md5.CalculateHash(), m_sha1.CalculateHash());
}
public virtual TlsHash CloneHash()
{
return new CombinedHash(this);
}
public virtual void Reset()
{
m_md5.Reset();
m_sha1.Reset();
}
}
}