prf_tls.h

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/*
* TLS v1.0 and v1.2 PRFs
* (C) 2004-2010 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
 
#ifndef BOTAN_TLS_PRF_H__
#define BOTAN_TLS_PRF_H__
 
#include <botan/kdf.h>
#include <botan/mac.h>
#include <botan/hash.h>
 
namespace Botan {
 
/**
* PRF used in TLS 1.0/1.1
*/
class BOTAN_DLL TLS_PRF : public KDF
   {
   public:
      SecureVector<byte> derive(size_t key_len,
                                const byte secret[], size_t secret_len,
                                const byte seed[], size_t seed_len) const;
 
      std::string name() const { return "TLS-PRF"; }
      KDF* clone() const { return new TLS_PRF; }
 
      TLS_PRF();
      ~TLS_PRF();
   private:
      MessageAuthenticationCode* hmac_md5;
      MessageAuthenticationCode* hmac_sha1;
   };
 
/**
* PRF used in TLS 1.2
*/
class BOTAN_DLL TLS_12_PRF : public KDF
   {
   public:
      SecureVector<byte> derive(size_t key_len,
                                const byte secret[], size_t secret_len,
                                const byte seed[], size_t seed_len) const;
 
      std::string name() const { return "TLSv12-PRF(" + hmac->name() + ")"; }
      KDF* clone() const { return new TLS_12_PRF(hmac->clone()); }
 
      TLS_12_PRF(MessageAuthenticationCode* hmac);
      ~TLS_12_PRF();
   private:
      MessageAuthenticationCode* hmac;
   };
 
}
 
#endif