/usr/include/nettle/dsa.h is in nettle-dev 3.2-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 | /* dsa.h
The DSA publickey algorithm.
Copyright (C) 2002, 2013, 2014 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_DSA_H_INCLUDED
#define NETTLE_DSA_H_INCLUDED
#include "nettle-types.h"
#include "bignum.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Name mangling */
#define dsa_params_init nettle_dsa_params_init
#define dsa_params_clear nettle_dsa_params_clear
#define dsa_signature_init nettle_dsa_signature_init
#define dsa_signature_clear nettle_dsa_signature_clear
#define dsa_sign nettle_dsa_sign
#define dsa_verify nettle_dsa_verify
#define dsa_generate_params nettle_dsa_generate_params
#define dsa_generate_keypair nettle_dsa_generate_keypair
#define dsa_signature_from_sexp nettle_dsa_signature_from_sexp
#define dsa_keypair_to_sexp nettle_dsa_keypair_to_sexp
#define dsa_keypair_from_sexp_alist nettle_dsa_keypair_from_sexp_alist
#define dsa_sha1_keypair_from_sexp nettle_dsa_sha1_keypair_from_sexp
#define dsa_sha256_keypair_from_sexp nettle_dsa_sha256_keypair_from_sexp
#define dsa_params_from_der_iterator nettle_dsa_params_from_der_iterator
#define dsa_public_key_from_der_iterator nettle_dsa_public_key_from_der_iterator
#define dsa_openssl_private_key_from_der_iterator nettle_dsa_openssl_private_key_from_der_iterator
#define dsa_openssl_private_key_from_der nettle_openssl_provate_key_from_der
#define _dsa_hash _nettle_dsa_hash
/* For FIPS approved parameters */
#define DSA_SHA1_MIN_P_BITS 512
#define DSA_SHA1_Q_OCTETS 20
#define DSA_SHA1_Q_BITS 160
#define DSA_SHA256_MIN_P_BITS 1024
#define DSA_SHA256_Q_OCTETS 32
#define DSA_SHA256_Q_BITS 256
struct dsa_params
{
/* Modulo */
mpz_t p;
/* Group order */
mpz_t q;
/* Generator */
mpz_t g;
};
void
dsa_params_init (struct dsa_params *params);
void
dsa_params_clear (struct dsa_params *params);
struct dsa_signature
{
mpz_t r;
mpz_t s;
};
/* Calls mpz_init to initialize bignum storage. */
void
dsa_signature_init(struct dsa_signature *signature);
/* Calls mpz_clear to deallocate bignum storage. */
void
dsa_signature_clear(struct dsa_signature *signature);
int
dsa_sign(const struct dsa_params *params,
const mpz_t x,
void *random_ctx, nettle_random_func *random,
size_t digest_size,
const uint8_t *digest,
struct dsa_signature *signature);
int
dsa_verify(const struct dsa_params *params,
const mpz_t y,
size_t digest_size,
const uint8_t *digest,
const struct dsa_signature *signature);
/* Key generation */
int
dsa_generate_params(struct dsa_params *params,
void *random_ctx, nettle_random_func *random,
void *progress_ctx, nettle_progress_func *progress,
unsigned p_bits, unsigned q_bits);
void
dsa_generate_keypair (const struct dsa_params *params,
mpz_t pub, mpz_t key,
void *random_ctx, nettle_random_func *random);
/* Keys in sexp form. */
struct nettle_buffer;
/* Generates a public-key expression if PRIV is NULL .*/
int
dsa_keypair_to_sexp(struct nettle_buffer *buffer,
const char *algorithm_name, /* NULL means "dsa" */
const struct dsa_params *params,
const mpz_t pub,
const mpz_t priv);
struct sexp_iterator;
int
dsa_signature_from_sexp(struct dsa_signature *rs,
struct sexp_iterator *i,
unsigned q_bits);
int
dsa_keypair_from_sexp_alist(struct dsa_params *params,
mpz_t pub,
mpz_t priv,
unsigned p_max_bits,
unsigned q_bits,
struct sexp_iterator *i);
/* If PRIV is NULL, expect a public-key expression. If PUB is NULL,
* expect a private key expression and ignore the parts not needed for
* the public key. */
/* Keys must be initialized before calling this function, as usual. */
int
dsa_sha1_keypair_from_sexp(struct dsa_params *params,
mpz_t pub,
mpz_t priv,
unsigned p_max_bits,
size_t length, const uint8_t *expr);
int
dsa_sha256_keypair_from_sexp(struct dsa_params *params,
mpz_t pub,
mpz_t priv,
unsigned p_max_bits,
size_t length, const uint8_t *expr);
/* Keys in X.509 andd OpenSSL format. */
struct asn1_der_iterator;
int
dsa_params_from_der_iterator(struct dsa_params *params,
unsigned max_bits, unsigned q_bits,
struct asn1_der_iterator *i);
int
dsa_public_key_from_der_iterator(const struct dsa_params *params,
mpz_t pub,
struct asn1_der_iterator *i);
int
dsa_openssl_private_key_from_der_iterator(struct dsa_params *params,
mpz_t pub,
mpz_t priv,
unsigned p_max_bits,
struct asn1_der_iterator *i);
int
dsa_openssl_private_key_from_der(struct dsa_params *params,
mpz_t pub,
mpz_t priv,
unsigned p_max_bits,
size_t length, const uint8_t *data);
/* Internal functions. */
void
_dsa_hash (mpz_t h, unsigned bit_size,
size_t length, const uint8_t *digest);
#ifdef __cplusplus
}
#endif
#endif /* NETTLE_DSA_H_INCLUDED */
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