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845e012 auto import from //depot/cupcake/@135843
The Android Open Source Project authored
1 /*
2 * Big number math
3 * Copyright (c) 2006, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #ifndef BIGNUM_H
16 #define BIGNUM_H
17
18 struct bignum;
19
20 struct bignum * bignum_init(void);
21 void bignum_deinit(struct bignum *n);
22 size_t bignum_get_unsigned_bin_len(struct bignum *n);
23 int bignum_get_unsigned_bin(const struct bignum *n, u8 *buf, size_t *len);
24 int bignum_set_unsigned_bin(struct bignum *n, const u8 *buf, size_t len);
25 int bignum_cmp(const struct bignum *a, const struct bignum *b);
26 int bignum_cmp_d(const struct bignum *a, unsigned long b);
27 int bignum_add(const struct bignum *a, const struct bignum *b,
28 struct bignum *c);
29 int bignum_sub(const struct bignum *a, const struct bignum *b,
30 struct bignum *c);
31 int bignum_mul(const struct bignum *a, const struct bignum *b,
32 struct bignum *c);
33 int bignum_mulmod(const struct bignum *a, const struct bignum *b,
34 const struct bignum *c, struct bignum *d);
35 int bignum_exptmod(const struct bignum *a, const struct bignum *b,
36 const struct bignum *c, struct bignum *d);
37
38 #endif /* BIGNUM_H */
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