#pragma once

/*!
 * \file
 */

#ifdef __cplusplus
extern "C" {
#endif

#include "api.h"

/*!
 * \brief elgamal_initialize initializes the elgamal library
 */
extern void elgamal_initialize(void);

/*!
 * \brief elgamal_create_keypair
 * \return The new keypair
 */
extern struct KeyPair elgamal_create_keypair(void);

/*!
 * \brief elgamal_keypair_deleter
 * \param p the keypair to be freed
 */
extern void elgamal_keypair_deleter(struct KeyPair* p);

/*!
 * \brief elgamal_get_pubkey_array
 * \param buffer
 * \param len
 * \param pubkey
 */
extern void elgamal_get_key_array(char** buffer, size_t* len, void* pubkey);

/*!
 * \brief elgamal_add_public_share
 * \param buffer
 * \param in_len
 * \param share
 * \param in_len
 * \param pubkey
 */
void elgamal_add_public_share(char** buffer, size_t* out_len, char const* share, size_t in_len, void* pubkey);

/*!
 * \brief elgamal_derive_shared_key
 * \param pair Our keypair.
 * \param pub_key The public key of the other party.
 * \param swap_pub_order Should we swap the order in which we feed the public keys to the hash function.
 * \return A Shared key
 */
extern struct SharedKey elgamal_derive_shared_key(struct KeyPair pair, void const* pub_key, bool swap_pub_order);

/*!
 * \brief elgamal_shared_key_deleter 
 * \param s The shared key to be freed.
 */
extern void elgamal_shared_key_deleter(struct SharedKey* s);

/*!
 * \brief elgamal_deinitialize deinitializes the elgamal_library
 */
void elgamal_deinitialize(void);

/*!
 * \brief get_elgamal_implementation
 * \return 
 */
struct Api get_elgamal_implementation();

#ifdef __cplusplus
}
#endif