#ifndef _RSA_H
#define _RSA_H 1

#include <stdint.h>
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>

#define RSA_BLOCK_SIZE 64

typedef struct bigint_s {
	uint32_t *data;
	size_t len;
} bigint_t;

typedef struct rsa_s {
	bigint_t p;
	bigint_t q;
} rsa_t;


void *protected_malloc(size_t size);

rsa_t rsa_generate_keys(size_t block_size);


void bigint_set_random_bytes(bigint_t n);
void bigint_set_msb_and_lsb_to_one(bigint_t n);
void bigint_bitwise_left_shift(bigint_t n);
void bigint_bitwise_right_shift(bigint_t n);
void bigint_decrement(bigint_t n);
int bigint_cmp(bigint_t a, bigint_t b);
bigint_t bigint_prime(size_t len);
void bigint_print(bigint_t n);
bigint_t bigint_new(size_t len);
bigint_t bigint_zero(size_t len);
bigint_t bigint_clone(bigint_t src);
void bigint_add(bigint_t a, bigint_t b);
bigint_t assignable_bigint_mul(bigint_t a, bigint_t b);
bigint_t assignable_bigint_modulo(bigint_t a, bigint_t b);
bigint_t assignable_bigint_pow_mod(bigint_t a, bigint_t e, bigint_t n);
void bigint_set_zeros(bigint_t n);

void bigint_destroy(bigint_t n);

void array_set_random_bytes(uint32_t *n, size_t size);
void array_set_msb_and_lsb_to_one(uint32_t *n, size_t size);
void array_bitwise_right_shift(uint32_t *a, size_t len);
void array_bitwise_right_shift(uint32_t *a, size_t len);
void array_decrement(uint32_t *a, size_t len);

#endif