#pragma once

#include <stddef.h>
#include <stdlib.h>

#ifdef __cplusplus
extern "C" {
#endif

enum bignum_error {
	NoError = 0,
	error = -1
};

struct Bignum {
	unsigned char* data;
	size_t len;
};

struct Bignum allocate_bignum(size_t len) {
	return (struct Bignum){
		(unsigned char*) malloc(len),
		len
	};
}

void free_bignum(struct Bignum* b) {
	free(b->data);
	b->data = 0;
	b->len = 0;
}

extern enum bignum_error get_curve25519_mod(struct Bignum* result);

extern enum bignum_error multiply_mod(struct Bignum* result, struct Bignum const lh, struct Bignum const rh, struct Bignum const mod);


#ifdef __cplusplus
}
#endif