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using System;
using System.IO;
using Org.BouncyCastle.Tls.Crypto;
using Org.BouncyCastle.Utilities.IO;
namespace Org.BouncyCastle.Tls
{
// TODO Rewrite without MemoryStream
public sealed class HandshakeMessageInput
: MemoryStream
{
private readonly int m_offset;
internal HandshakeMessageInput(byte[] buf, int offset, int length)
#if PORTABLE
: base(buf, offset, length, false)
#else
: base(buf, offset, length, false, true)
#endif
{
#if PORTABLE
this.m_offset = 0;
#else
this.m_offset = offset;
#endif
}
public void UpdateHash(TlsHash hash)
{
Streams.WriteBufTo(this, new TlsHashSink(hash));
}
internal void UpdateHashPrefix(TlsHash hash, int bindersSize)
{
#if PORTABLE
byte[] buf = ToArray();
int count = buf.Length;
#else
byte[] buf = GetBuffer();
int count = (int)Length;
#endif
hash.Update(buf, m_offset, count - bindersSize);
}
internal void UpdateHashSuffix(TlsHash hash, int bindersSize)
{
#if PORTABLE
byte[] buf = ToArray();
int count = buf.Length;
#else
byte[] buf = GetBuffer();
int count = (int)Length;
#endif
hash.Update(buf, m_offset + count - bindersSize, bindersSize);
}
}
}
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