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39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/*
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* Big number math
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* Copyright (c) 2006, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#ifndef BIGNUM_H
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#define BIGNUM_H
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struct bignum;
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struct bignum * bignum_init(void);
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void bignum_deinit(struct bignum *n);
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size_t bignum_get_unsigned_bin_len(struct bignum *n);
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int bignum_get_unsigned_bin(const struct bignum *n, u8 *buf, size_t *len);
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int bignum_set_unsigned_bin(struct bignum *n, const u8 *buf, size_t len);
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int bignum_cmp(const struct bignum *a, const struct bignum *b);
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int bignum_cmp_d(const struct bignum *a, unsigned long b);
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int bignum_add(const struct bignum *a, const struct bignum *b,
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struct bignum *c);
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int bignum_sub(const struct bignum *a, const struct bignum *b,
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struct bignum *c);
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int bignum_mul(const struct bignum *a, const struct bignum *b,
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struct bignum *c);
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int bignum_mulmod(const struct bignum *a, const struct bignum *b,
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const struct bignum *c, struct bignum *d);
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int bignum_exptmod(const struct bignum *a, const struct bignum *b,
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const struct bignum *c, struct bignum *d);
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#endif /* BIGNUM_H */
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