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#pragma once
#include <stdint.h>
#include <assert.h>
#include <string.h>
#include <gmp.h>
static inline void crypto_import(mpz_t n, const uint8_t* src, size_t len)
{
int order = 1;
int unit_size = 1;
int endian = 1;
int skip_bits = 0;
mpz_import(n, len, order, unit_size, endian, skip_bits, src);
}
static inline size_t crypto_export(uint8_t* dst, size_t dst_size, const mpz_t n)
{
int order = 1; // msb first
int unit_size = 1; // byte
int endian = 1; // msb first
int skip_bits = 0;
size_t bitsize = mpz_sizeinbase(n, 2);
size_t bytesize = (bitsize + 7) / 8;
assert(bytesize <= dst_size);
memset(dst, 0, dst_size);
mpz_export(dst + dst_size - bytesize, &bytesize, order, unit_size,
endian, skip_bits, n);
return bytesize;
}
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