wpa_supplicant: bignum.h Source File

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00001 /*
00002  * Big number math
00003  * Copyright (c) 2006, Jouni Malinen <j@w1.fi>
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License version 2 as
00007  * published by the Free Software Foundation.
00008  *
00009  * Alternatively, this software may be distributed under the terms of BSD
00010  * license.
00011  *
00012  * See README and COPYING for more details.
00013  */
00014 
00015 #ifndef BIGNUM_H
00016 #define BIGNUM_H
00017 
00018 struct bignum;
00019 
00020 struct bignum * bignum_init(void);
00021 void bignum_deinit(struct bignum *n);
00022 size_t bignum_get_unsigned_bin_len(struct bignum *n);
00023 int bignum_get_unsigned_bin(const struct bignum *n, u8 *buf, size_t *len);
00024 int bignum_set_unsigned_bin(struct bignum *n, const u8 *buf, size_t len);
00025 int bignum_cmp(const struct bignum *a, const struct bignum *b);
00026 int bignum_cmp_d(const struct bignum *a, unsigned long b);
00027 int bignum_add(const struct bignum *a, const struct bignum *b,
00028                struct bignum *c);
00029 int bignum_sub(const struct bignum *a, const struct bignum *b,
00030                struct bignum *c);
00031 int bignum_mul(const struct bignum *a, const struct bignum *b,
00032                struct bignum *c);
00033 int bignum_mulmod(const struct bignum *a, const struct bignum *b,
00034                   const struct bignum *c, struct bignum *d);
00035 int bignum_exptmod(const struct bignum *a, const struct bignum *b,
00036                    const struct bignum *c, struct bignum *d);
00037 
00038 #endif /* BIGNUM_H */