/*

* Algorithm Identifier

* (C) 1999-2007 Jack Lloyd

*

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

*/

#ifndef BOTAN_ALGORITHM_IDENTIFIER_H_

#define BOTAN_ALGORITHM_IDENTIFIER_H_

#include <botan/asn1_obj.h>

#include <botan/asn1_oid.h>

#include <string>

#include <vector>

namespace Botan {

/**

* Algorithm Identifier

*/

class BOTAN_PUBLIC_API(2,0) AlgorithmIdentifier final : public ASN1_Object

   {

   public:

      enum Encoding_Option { USE_NULL_PARAM, USE_EMPTY_PARAM };

      void encode_into(class DER_Encoder&) const override;

      void decode_from(class BER_Decoder&) override;

      AlgorithmIdentifier() = default;

      AlgorithmIdentifier(const OID& oid, Encoding_Option enc);

      AlgorithmIdentifier(const std::string& oid_name, Encoding_Option enc);

      AlgorithmIdentifier(const OID& oid, const std::vector<uint8_t>& params);

      AlgorithmIdentifier(const std::string& oid_name, const std::vector<uint8_t>& params);

      const OID& get_oid() const { return oid; }

      const std::vector<uint8_t>& get_parameters() const { return parameters; }

   BOTAN_DEPRECATED_PUBLIC_MEMBER_VARIABLES:

      /*

      * These values are public for historical reasons, but in a future release

      * they will be made private. Do not access them.

      */

      OID oid;

      std::vector<uint8_t> parameters;

   };

/*

* Comparison Operations

*/

bool BOTAN_PUBLIC_API(2,0) operator==(const AlgorithmIdentifier&,

                                      const AlgorithmIdentifier&);

bool BOTAN_PUBLIC_API(2,0) operator!=(const AlgorithmIdentifier&,

                                      const AlgorithmIdentifier&);

}

#endif