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/*
* Policies
* (C) 2004-2006 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#ifndef BOTAN_TLS_POLICY_H__
#define BOTAN_TLS_POLICY_H__
#include <botan/tls_magic.h>
#include <botan/x509cert.h>
#include <botan/dl_group.h>
#include <vector>
namespace Botan {
/**
* TLS Policy Base Class
* Inherit and overload as desired to suite local policy concerns
*/
class BOTAN_DLL TLS_Policy
{
public:
/*
* Return allowed ciphersuites, in order of preference
*/
std::vector<u16bit> ciphersuite_list(bool have_srp) const;
u16bit choose_suite(const std::vector<u16bit>& client_suites,
bool have_rsa,
bool have_dsa,
bool have_srp) const;
byte choose_compression(const std::vector<byte>& client_algos) const;
std::vector<std::string> allowed_ciphers() const;
std::vector<std::string> allowed_hashes() const;
std::vector<std::string> allowed_key_exchange_methods() const;
std::vector<std::string> allowed_signature_methods() const;
virtual std::vector<byte> compression() const;
virtual bool check_cert(const std::vector<X509_Certificate>& cert_chain) const = 0;
/**
* If client authentication is desired, returns a list of allowable
* CAs for same. If not desired, returns empty list.
*/
virtual std::vector<X509_Certificate> client_auth_CAs() const
{ return std::vector<X509_Certificate>(); }
/**
* Require support for RFC 5746 extensions to enable
* renegotiation.
*
* @warning Changing this to false exposes you to injected
* plaintext attacks.
*/
virtual bool require_secure_renegotiation() const { return true; }
/**
* Return the group to use for ephemeral Diffie-Hellman key agreement
*/
virtual DL_Group dh_group() const { return DL_Group("modp/ietf/1536"); }
/*
* @return the minimum version that we will negotiate
*/
virtual Version_Code min_version() const { return SSL_V3; }
/*
* @return the version we would prefer to negotiate
*/
virtual Version_Code pref_version() const { return TLS_V12; }
virtual ~TLS_Policy() {}
};
}
#endif
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