1/*
2 * Big number math
3 * Copyright (c) 2006, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#ifndef BIGNUM_H
10#define BIGNUM_H
11
12struct bignum;
13
14struct bignum * bignum_init(void);
15void bignum_deinit(struct bignum *n);
16size_t bignum_get_unsigned_bin_len(struct bignum *n);
17int bignum_get_unsigned_bin(const struct bignum *n, u8 *buf, size_t *len);
18int bignum_set_unsigned_bin(struct bignum *n, const u8 *buf, size_t len);
19int bignum_cmp(const struct bignum *a, const struct bignum *b);
20int bignum_cmp_d(const struct bignum *a, unsigned long b);
21int bignum_add(const struct bignum *a, const struct bignum *b,
22	       struct bignum *c);
23int bignum_sub(const struct bignum *a, const struct bignum *b,
24	       struct bignum *c);
25int bignum_mul(const struct bignum *a, const struct bignum *b,
26	       struct bignum *c);
27int bignum_mulmod(const struct bignum *a, const struct bignum *b,
28		  const struct bignum *c, struct bignum *d);
29int bignum_exptmod(const struct bignum *a, const struct bignum *b,
30		   const struct bignum *c, struct bignum *d);
31
32#endif /* BIGNUM_H */
33