/*

* X9.42 PRF

* (C) 1999-2007 Jack Lloyd

*

* Botan is released under the Simplified BSD License (see license.txt)

*/

#ifndef BOTAN_ANSI_X942_PRF_H_

#define BOTAN_ANSI_X942_PRF_H_

#include <botan/kdf.h>

#include <botan/asn1_oid.h>

BOTAN_FUTURE_INTERNAL_HEADER(prf_x942.h)

namespace Botan {

/**

* PRF from ANSI X9.42

*/

class BOTAN_PUBLIC_API(2,0) X942_PRF final : public KDF

   {

   public:

      std::string name() const override;

      KDF* clone() const override { return new X942_PRF(m_key_wrap_oid); }

      size_t 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;

      explicit X942_PRF(const std::string& oid) : m_key_wrap_oid(OID::from_string(oid)) {}

      explicit X942_PRF(const OID& oid) : m_key_wrap_oid(oid) {}

   private:

      OID m_key_wrap_oid;

   };

}

#endif