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/*
* TLS Handshake Hash
* (C) 2004-2006,2011,2012 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/internal/tls_handshake_hash.h>
#include <botan/tls_exceptn.h>
#include <botan/hash.h>
namespace Botan {
namespace TLS {
/**
* Return a TLS Handshake Hash
*/
secure_vector<byte> Handshake_Hash::final(Protocol_Version version,
const std::string& mac_algo) const
{
auto choose_hash = [=]() {
if(!version.supports_ciphersuite_specific_prf())
return "Parallel(MD5,SHA-160)";
if(mac_algo == "MD5" || mac_algo == "SHA-1")
return "SHA-256";
return mac_algo.c_str();
};
const std::string hash_algo = choose_hash();
std::unique_ptr<HashFunction> hash(HashFunction::create_or_throw(hash_algo));
hash->update(m_data);
return hash->final();
}
}
}
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