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/*
* TLS Handshake State
* (C) 2004-2006,2011,2012 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#ifndef BOTAN_TLS_HANDSHAKE_STATE_H__
#define BOTAN_TLS_HANDSHAKE_STATE_H__
#include <botan/internal/tls_handshake_hash.h>
#include <botan/internal/tls_handshake_io.h>
#include <botan/internal/tls_session_key.h>
#include <botan/pk_keys.h>
#include <botan/pubkey.h>
#include <functional>
#include <utility>
#include <memory>
namespace Botan {
class KDF;
namespace TLS {
class Policy;
class Client_Hello;
class Server_Hello;
class Certificate;
class Server_Key_Exchange;
class Certificate_Req;
class Server_Hello_Done;
class Certificate;
class Client_Key_Exchange;
class Certificate_Verify;
class Next_Protocol;
class New_Session_Ticket;
class Finished;
/**
* SSL/TLS Handshake State
*/
class Handshake_State
{
public:
Handshake_State(Handshake_IO* io);
~Handshake_State();
Handshake_State(const Handshake_State&) = delete;
Handshake_State& operator=(const Handshake_State&) = delete;
Handshake_IO& handshake_io() { return *m_handshake_io; }
bool received_handshake_msg(Handshake_Type handshake_msg) const;
void confirm_transition_to(Handshake_Type handshake_msg);
void set_expected_next(Handshake_Type handshake_msg);
const std::vector<byte>& session_ticket() const;
std::pair<std::string, Signature_Format>
understand_sig_format(const Public_Key* key,
std::string hash_algo,
std::string sig_algo,
bool for_client_auth) const;
std::pair<std::string, Signature_Format>
choose_sig_format(const Private_Key* key,
std::string& hash_algo,
std::string& sig_algo,
bool for_client_auth,
const Policy& policy) const;
std::string srp_identifier() const;
KDF* protocol_specific_prf() const;
Protocol_Version version() const { return m_version; }
void set_version(const Protocol_Version& version);
void client_hello(Client_Hello* client_hello);
void server_hello(Server_Hello* server_hello);
void server_certs(Certificate* server_certs);
void server_kex(Server_Key_Exchange* server_kex);
void cert_req(Certificate_Req* cert_req);
void server_hello_done(Server_Hello_Done* server_hello_done);
void client_certs(Certificate* client_certs);
void client_kex(Client_Key_Exchange* client_kex);
void client_verify(Certificate_Verify* client_verify);
void next_protocol(Next_Protocol* next_protocol);
void new_session_ticket(New_Session_Ticket* new_session_ticket);
void server_finished(Finished* server_finished);
void client_finished(Finished* client_finished);
const Client_Hello* client_hello() const
{ return m_client_hello.get(); }
const Server_Hello* server_hello() const
{ return m_server_hello.get(); }
const Certificate* server_certs() const
{ return m_server_certs.get(); }
const Server_Key_Exchange* server_kex() const
{ return m_server_kex.get(); }
const Certificate_Req* cert_req() const
{ return m_cert_req.get(); }
const Server_Hello_Done* server_hello_done() const
{ return m_server_hello_done.get(); }
const Certificate* client_certs() const
{ return m_client_certs.get(); }
const Client_Key_Exchange* client_kex() const
{ return m_client_kex.get(); }
const Certificate_Verify* client_verify() const
{ return m_client_verify.get(); }
const Next_Protocol* next_protocol() const
{ return m_next_protocol.get(); }
const New_Session_Ticket* new_session_ticket() const
{ return m_new_session_ticket.get(); }
const Finished* server_finished() const
{ return m_server_finished.get(); }
const Finished* client_finished() const
{ return m_client_finished.get(); }
const Ciphersuite& ciphersuite() const { return m_ciphersuite; }
const Session_Keys& session_keys() const { return m_session_keys; }
void compute_session_keys();
void compute_session_keys(const secure_vector<byte>& resume_master_secret);
// Used by the server only, in case of RSA key exchange
Private_Key* server_rsa_kex_key = nullptr; // FIXME make private
Handshake_Hash hash; // FIXME make private
/*
* Only used by clients for session resumption
*/
secure_vector<byte> resume_master_secret; // FIXME make private
/*
* Used by the server to know if resumption should be allowed on
* a server-initiated renegotiation
*/
bool allow_session_resumption = true; // FIXME make private
/**
* Used by client using NPN FIXME make private
*/
std::function<std::string (std::vector<std::string>)> client_npn_cb;
private:
std::unique_ptr<Handshake_IO> m_handshake_io;
u32bit m_hand_expecting_mask = 0;
u32bit m_hand_received_mask = 0;
Protocol_Version m_version;
Ciphersuite m_ciphersuite;
Session_Keys m_session_keys;
std::unique_ptr<Client_Hello> m_client_hello;
std::unique_ptr<Server_Hello> m_server_hello;
std::unique_ptr<Certificate> m_server_certs;
std::unique_ptr<Server_Key_Exchange> m_server_kex;
std::unique_ptr<Certificate_Req> m_cert_req;
std::unique_ptr<Server_Hello_Done> m_server_hello_done;
std::unique_ptr<Certificate> m_client_certs;
std::unique_ptr<Client_Key_Exchange> m_client_kex;
std::unique_ptr<Certificate_Verify> m_client_verify;
std::unique_ptr<Next_Protocol> m_next_protocol;
std::unique_ptr<New_Session_Ticket> m_new_session_ticket;
std::unique_ptr<Finished> m_server_finished;
std::unique_ptr<Finished> m_client_finished;
};
}
}
#endif
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