/*

* 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