curve.h

#ifndef CURVE_H
#define CURVE_H

#include <stdint.h>
#include <stddef.h>
#include "signal_protocol_types.h"

#ifdef __cplusplus
extern "C" {
#endif

#define CURVE_SIGNATURE_LEN 64
#define VRF_SIGNATURE_LEN 96

int curve_internal_fast_tests(int silent);

int curve_decode_point(ec_public_key **public_key, const uint8_t *key_data, size_t key_len, signal_context *global_context);
int ec_public_key_compare(const ec_public_key *key1, const ec_public_key *key2);
int ec_public_key_memcmp(const ec_public_key *key1, const ec_public_key *key2);

int ec_public_key_serialize(signal_buffer **buffer, const ec_public_key *key);

void ec_public_key_destroy(signal_type_base *type);

int curve_decode_private_point(ec_private_key **private_key, const uint8_t *key_data, size_t key_len, signal_context *global_context);
int ec_private_key_compare(const ec_private_key *key1, const ec_private_key *key2);

int ec_private_key_serialize(signal_buffer **buffer, const ec_private_key *key);

void ec_private_key_destroy(signal_type_base *type);

int ec_key_pair_create(ec_key_pair **key_pair, ec_public_key *public_key, ec_private_key *private_key);
ec_public_key *ec_key_pair_get_public(const ec_key_pair *key_pair);
ec_private_key *ec_key_pair_get_private(const ec_key_pair *key_pair);
void ec_key_pair_destroy(signal_type_base *type);

int curve_generate_private_key(signal_context *context, ec_private_key **private_key);
int curve_generate_public_key(ec_public_key **public_key, const ec_private_key *private_key);

int curve_generate_key_pair(signal_context *context, ec_key_pair **key_pair);

ec_public_key_list *ec_public_key_list_alloc(void);

ec_public_key_list *ec_public_key_list_copy(const ec_public_key_list *list);

int ec_public_key_list_push_back(ec_public_key_list *list, ec_public_key *value);

unsigned int ec_public_key_list_size(const ec_public_key_list *list);

ec_public_key *ec_public_key_list_at(const ec_public_key_list *list, unsigned int index);

void ec_public_key_list_sort(ec_public_key_list *list);

void ec_public_key_list_free(ec_public_key_list *list);

int curve_calculate_agreement(uint8_t **shared_key_data, const ec_public_key *public_key, const ec_private_key *private_key);

int curve_verify_signature(const ec_public_key *signing_key,
        const uint8_t *message_data, size_t message_len,
        const uint8_t *signature_data, size_t signature_len);

int curve_calculate_signature(signal_context *context,
        signal_buffer **signature,
        const ec_private_key *signing_key,
        const uint8_t *message_data, size_t message_len);

int curve_verify_vrf_signature(signal_context *context,
        signal_buffer **vrf_output,
        const ec_public_key *signing_key,
        const uint8_t *message_data, size_t message_len,
        const uint8_t *signature_data, size_t signature_len);

int curve_calculate_vrf_signature(signal_context *context,
        signal_buffer **signature,
        const ec_private_key *signing_key,
        const uint8_t *message_data, size_t message_len);

#ifdef __cplusplus
}
#endif

#endif /* CURVE_H */