/usr/include/nettle/bignum.h is in nettle-dev 3.2-1ubuntu0.16.04.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | /* bignum.h
Bignum operations that are missing from gmp.
Copyright (C) 2001 Niels Möller
This file is part of GNU Nettle.
GNU Nettle is free software: you can redistribute it and/or
modify it under the terms of either:
* the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.
or both in parallel, as here.
GNU Nettle is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received copies of the GNU General Public License and
the GNU Lesser General Public License along with this program. If
not, see http://www.gnu.org/licenses/.
*/
#ifndef NETTLE_BIGNUM_H_INCLUDED
#define NETTLE_BIGNUM_H_INCLUDED
#include "nettle-meta.h"
#include "nettle-types.h"
/* For NETTLE_USE_MINI_GMP */
#include "version.h"
#if NETTLE_USE_MINI_GMP
# include "mini-gmp.h"
# define GMP_NUMB_MASK (~(mp_limb_t) 0)
/* Functions missing in older gmp versions, and checked for with ifdef */
# define mpz_limbs_read mpz_limbs_read
# define mpn_copyd mpn_copyd
# define mpn_sqr mpn_sqr
# define mpz_combit mpz_combit
# define mpz_import mpz_import
# define mpz_export mpz_export
/* Side-channel silent powm not available in mini-gmp. */
# define mpz_powm_sec mpz_pwm
#else
# include <gmp.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* Size needed for signed encoding, including extra sign byte if
* necessary. */
size_t
nettle_mpz_sizeinbase_256_s(const mpz_t x);
/* Size needed for unsigned encoding */
size_t
nettle_mpz_sizeinbase_256_u(const mpz_t x);
/* Writes an integer as length octets, using big endian byte order,
* and two's complement for negative numbers. */
void
nettle_mpz_get_str_256(size_t length, uint8_t *s, const mpz_t x);
/* Reads a big endian, two's complement, integer. */
void
nettle_mpz_set_str_256_s(mpz_t x,
size_t length, const uint8_t *s);
void
nettle_mpz_init_set_str_256_s(mpz_t x,
size_t length, const uint8_t *s);
/* Similar, but for unsigned format. These function don't interpret
* the most significant bit as the sign. */
void
nettle_mpz_set_str_256_u(mpz_t x,
size_t length, const uint8_t *s);
void
nettle_mpz_init_set_str_256_u(mpz_t x,
size_t length, const uint8_t *s);
/* Returns a uniformly distributed random number 0 <= x < 2^n */
void
nettle_mpz_random_size(mpz_t x,
void *ctx, nettle_random_func *random,
unsigned bits);
/* Returns a number x, almost uniformly random in the range
* 0 <= x < n. */
void
nettle_mpz_random(mpz_t x,
void *ctx, nettle_random_func *random,
const mpz_t n);
void
nettle_random_prime(mpz_t p, unsigned bits, int top_bits_set,
void *ctx, nettle_random_func *random,
void *progress_ctx, nettle_progress_func *progress);
void
_nettle_generate_pocklington_prime (mpz_t p, mpz_t r,
unsigned bits, int top_bits_set,
void *ctx, nettle_random_func *random,
const mpz_t p0,
const mpz_t q,
const mpz_t p0q);
/* sexp parsing */
struct sexp_iterator;
/* If LIMIT is non-zero, the number must be at most LIMIT bits.
* Implies sexp_iterator_next. */
int
nettle_mpz_set_sexp(mpz_t x, unsigned limit, struct sexp_iterator *i);
/* der parsing */
struct asn1_der_iterator;
int
nettle_asn1_der_get_bignum(struct asn1_der_iterator *iterator,
mpz_t x, unsigned max_bits);
#ifdef __cplusplus
}
#endif
#endif /* NETTLE_BIGNUM_H_INCLUDED */
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