crypto/dsa/dsa_meth.c

   1 /*
   2  * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 /*
  11  * Licensed under the Apache License 2.0 (the "License");
  12  * you may not use this file except in compliance with the License.
  13  * You may obtain a copy of the License at
  14  * https://www.openssl.org/source/license.html
  15  * or in the file LICENSE in the source distribution.
  16  */
  17
  18 #include "dsa_locl.h"
  19 #include <string.h>
  20 #include <openssl/err.h>
  21
  22 DSA_METHOD *DSA_meth_new(const char *name, int flags)
  23 {
  24     DSA_METHOD *dsam = OPENSSL_zalloc(sizeof(*dsam));
  25
  26     if (dsam != NULL) {
  27         dsam->flags = flags;
  28
  29         dsam->name = OPENSSL_strdup(name);
  30         if (dsam->name != NULL)
  31             return dsam;
  32
  33         OPENSSL_free(dsam);
  34     }
  35
  36     DSAerr(DSA_F_DSA_METH_NEW, ERR_R_MALLOC_FAILURE);
  37     return NULL;
  38 }
  39
  40 void DSA_meth_free(DSA_METHOD *dsam)
  41 {
  42     if (dsam != NULL) {
  43         OPENSSL_free(dsam->name);
  44         OPENSSL_free(dsam);
  45     }
  46 }
  47
  48 DSA_METHOD *DSA_meth_dup(const DSA_METHOD *dsam)
  49 {
  50     DSA_METHOD *ret = OPENSSL_malloc(sizeof(*ret));
  51
  52     if (ret != NULL) {
  53         memcpy(ret, dsam, sizeof(*dsam));
  54
  55         ret->name = OPENSSL_strdup(dsam->name);
  56         if (ret->name != NULL)
  57             return ret;
  58
  59         OPENSSL_free(ret);
  60     }
  61
  62     DSAerr(DSA_F_DSA_METH_DUP, ERR_R_MALLOC_FAILURE);
  63     return NULL;
  64 }
  65
  66 const char *DSA_meth_get0_name(const DSA_METHOD *dsam)
  67 {
  68     return dsam->name;
  69 }
  70
  71 int DSA_meth_set1_name(DSA_METHOD *dsam, const char *name)
  72 {
  73     char *tmpname = OPENSSL_strdup(name);
  74
  75     if (tmpname == NULL) {
  76         DSAerr(DSA_F_DSA_METH_SET1_NAME, ERR_R_MALLOC_FAILURE);
  77         return 0;
  78     }
  79
  80     OPENSSL_free(dsam->name);
  81     dsam->name = tmpname;
  82
  83     return 1;
  84 }
  85
  86 int DSA_meth_get_flags(const DSA_METHOD *dsam)
  87 {
  88     return dsam->flags;
  89 }
  90
  91 int DSA_meth_set_flags(DSA_METHOD *dsam, int flags)
  92 {
  93     dsam->flags = flags;
  94     return 1;
  95 }
  96
  97 void *DSA_meth_get0_app_data(const DSA_METHOD *dsam)
  98 {
  99     return dsam->app_data;
 100 }
 101
 102 int DSA_meth_set0_app_data(DSA_METHOD *dsam, void *app_data)
 103 {
 104     dsam->app_data = app_data;
 105     return 1;
 106 }
 107
 108 DSA_SIG *(*DSA_meth_get_sign(const DSA_METHOD *dsam))
 109         (const unsigned char *, int, DSA *)
 110 {
 111     return dsam->dsa_do_sign;
 112 }
 113
 114 int DSA_meth_set_sign(DSA_METHOD *dsam,
 115                        DSA_SIG *(*sign) (const unsigned char *, int, DSA *))
 116 {
 117     dsam->dsa_do_sign = sign;
 118     return 1;
 119 }
 120
 121 int (*DSA_meth_get_sign_setup(const DSA_METHOD *dsam))
 122         (DSA *, BN_CTX *, BIGNUM **, BIGNUM **)
 123 {
 124     return dsam->dsa_sign_setup;
 125 }
 126
 127 int DSA_meth_set_sign_setup(DSA_METHOD *dsam,
 128         int (*sign_setup) (DSA *, BN_CTX *, BIGNUM **, BIGNUM **))
 129 {
 130     dsam->dsa_sign_setup = sign_setup;
 131     return 1;
 132 }
 133
 134 int (*DSA_meth_get_verify(const DSA_METHOD *dsam))
 135         (const unsigned char *, int, DSA_SIG *, DSA *)
 136 {
 137     return dsam->dsa_do_verify;
 138 }
 139
 140 int DSA_meth_set_verify(DSA_METHOD *dsam,
 141     int (*verify) (const unsigned char *, int, DSA_SIG *, DSA *))
 142 {
 143     dsam->dsa_do_verify = verify;
 144     return 1;
 145 }
 146
 147 int (*DSA_meth_get_mod_exp(const DSA_METHOD *dsam))
 148         (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
 149          const BIGNUM *, const BIGNUM *, BN_CTX *, BN_MONT_CTX *)
 150 {
 151     return dsam->dsa_mod_exp;
 152 }
 153
 154 int DSA_meth_set_mod_exp(DSA_METHOD *dsam,
 155     int (*mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
 156                     const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *,
 157                     BN_MONT_CTX *))
 158 {
 159     dsam->dsa_mod_exp = mod_exp;
 160     return 1;
 161 }
 162
 163 int (*DSA_meth_get_bn_mod_exp(const DSA_METHOD *dsam))
 164     (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *,
 165      BN_MONT_CTX *)
 166 {
 167     return dsam->bn_mod_exp;
 168 }
 169
 170 int DSA_meth_set_bn_mod_exp(DSA_METHOD *dsam,
 171     int (*bn_mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
 172                        const BIGNUM *, BN_CTX *, BN_MONT_CTX *))
 173 {
 174     dsam->bn_mod_exp = bn_mod_exp;
 175     return 1;
 176 }
 177
 178 int (*DSA_meth_get_init(const DSA_METHOD *dsam))(DSA *)
 179 {
 180     return dsam->init;
 181 }
 182
 183 int DSA_meth_set_init(DSA_METHOD *dsam, int (*init)(DSA *))
 184 {
 185     dsam->init = init;
 186     return 1;
 187 }
 188
 189 int (*DSA_meth_get_finish(const DSA_METHOD *dsam)) (DSA *)
 190 {
 191     return dsam->finish;
 192 }
 193
 194 int DSA_meth_set_finish(DSA_METHOD *dsam, int (*finish) (DSA *))
 195 {
 196     dsam->finish = finish;
 197     return 1;
 198 }
 199
 200 int (*DSA_meth_get_paramgen(const DSA_METHOD *dsam))
 201         (DSA *, int, const unsigned char *, int, int *, unsigned long *,
 202          BN_GENCB *)
 203 {
 204     return dsam->dsa_paramgen;
 205 }
 206
 207 int DSA_meth_set_paramgen(DSA_METHOD *dsam,
 208         int (*paramgen) (DSA *, int, const unsigned char *, int, int *,
 209                          unsigned long *, BN_GENCB *))
 210 {
 211     dsam->dsa_paramgen = paramgen;
 212     return 1;
 213 }
 214
 215 int (*DSA_meth_get_keygen(const DSA_METHOD *dsam)) (DSA *)
 216 {
 217     return dsam->dsa_keygen;
 218 }
 219
 220 int DSA_meth_set_keygen(DSA_METHOD *dsam, int (*keygen) (DSA *))
 221 {
 222     dsam->dsa_keygen = keygen;
 223     return 1;
 224 }