prf_tls.h

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/*
* TLSv1.2 PRF
* (C) 2004-2010 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
 
#ifndef BOTAN_TLS_V12_PRF_H_
#define BOTAN_TLS_V12_PRF_H_
 
#include <botan/kdf.h>
#include <botan/mac.h>
 
namespace Botan {
 
/**
* PRF used in TLS 1.2
*/
class TLS_12_PRF final : public KDF
   {
   public:
      std::string name() const override { return "TLS-12-PRF(" + m_mac->name() + ")"; }
 
      std::unique_ptr<KDF> new_object() const override { return std::make_unique<TLS_12_PRF>(m_mac->new_object()); }
 
      void kdf(uint8_t key[], size_t key_len,
               const uint8_t secret[], size_t secret_len,
               const uint8_t salt[], size_t salt_len,
               const uint8_t label[], size_t label_len) const override;
 
      /**
      * @param mac MAC algorithm to use
      */
      explicit TLS_12_PRF(std::unique_ptr<MessageAuthenticationCode> mac) : m_mac(std::move(mac)) {}
   private:
      std::unique_ptr<MessageAuthenticationCode> m_mac;
   };
 
}
 
#endif