include/openssl/dsa.h

   1 /*
   2  * Copyright 1995-2018 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 #ifndef OPENSSL_DSA_H
  11 # define OPENSSL_DSA_H
  12 # pragma once
  13
  14 # include <openssl/macros.h>
  15 # ifndef OPENSSL_NO_DEPRECATED_3_0
  16 #  define HEADER_DSA_H
  17 # endif
  18
  19 # include <openssl/opensslconf.h>
  20
  21 # ifndef OPENSSL_NO_DSA
  22 #  ifdef  __cplusplus
  23 extern "C" {
  24 #  endif
  25 #  include <openssl/e_os2.h>
  26 #  include <openssl/asn1.h>
  27 #  include <openssl/bio.h>
  28 #  include <openssl/crypto.h>
  29 #  include <openssl/types.h>
  30 #  include <openssl/bn.h>
  31 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
  32 #   include <openssl/dh.h>
  33 #  endif
  34 #  include <openssl/dsaerr.h>
  35
  36 #  ifndef OPENSSL_DSA_MAX_MODULUS_BITS
  37 #   define OPENSSL_DSA_MAX_MODULUS_BITS   10000
  38 #  endif
  39
  40 #  define OPENSSL_DSA_FIPS_MIN_MODULUS_BITS 1024
  41
  42 #  ifndef OPENSSL_NO_DEPRECATED_1_1_0
  43 /*
  44  * Does nothing. Previously this switched off constant time behaviour.
  45  */
  46 #   define DSA_FLAG_NO_EXP_CONSTTIME       0x00
  47 #  endif
  48
  49 #  ifndef OPENSSL_NO_DEPRECATED_3_0
  50 #   define DSA_FLAG_CACHE_MONT_P   0x01
  51
  52 /*
  53  * If this flag is set the DSA method is FIPS compliant and can be used in
  54  * FIPS mode. This is set in the validated module method. If an application
  55  * sets this flag in its own methods it is its responsibility to ensure the
  56  * result is compliant.
  57  */
  58
  59 #   define DSA_FLAG_FIPS_METHOD                    0x0400
  60
  61 /*
  62  * If this flag is set the operations normally disabled in FIPS mode are
  63  * permitted it is then the applications responsibility to ensure that the
  64  * usage is compliant.
  65  */
  66
  67 #   define DSA_FLAG_NON_FIPS_ALLOW                 0x0400
  68 #   define DSA_FLAG_FIPS_CHECKED                   0x0800
  69 #  endif    /* OPENSSL_NO_DEPRECATED_3_0 */
  70
  71 /* Already defined in ossl_typ.h */
  72 /* typedef struct dsa_st DSA; */
  73 /* typedef struct dsa_method DSA_METHOD; */
  74
  75 typedef struct DSA_SIG_st DSA_SIG;
  76
  77 /*
  78  * TODO(3.0): consider removing the ASN.1 encoding and decoding when
  79  * deserialisation is completed elsewhere.
  80  */
  81 #  define d2i_DSAparams_fp(fp, x) \
  82         (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \
  83                            (char *(*)())d2i_DSAparams, (fp), \
  84                            (unsigned char **)(x))
  85 #  define i2d_DSAparams_fp(fp, x) \
  86         ASN1_i2d_fp(i2d_DSAparams, (fp), (unsigned char *)(x))
  87 #  define d2i_DSAparams_bio(bp, x) \
  88         ASN1_d2i_bio_of(DSA, DSA_new, d2i_DSAparams, bp, x)
  89 #  define i2d_DSAparams_bio(bp, x) \
  90         ASN1_i2d_bio_of(DSA, i2d_DSAparams, bp, x)
  91
  92 DECLARE_ASN1_DUP_FUNCTION_name(DSA, DSAparams)
  93 DSA_SIG *DSA_SIG_new(void);
  94 void DSA_SIG_free(DSA_SIG *a);
  95 DECLARE_ASN1_ENCODE_FUNCTIONS_only(DSA_SIG, DSA_SIG)
  96 void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
  97 int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s);
  98
  99 DEPRECATEDIN_3_0(DSA_SIG *DSA_do_sign(const unsigned char *dgst, int dlen,
 100                                       DSA *dsa))
 101 DEPRECATEDIN_3_0(int DSA_do_verify(const unsigned char *dgst, int dgst_len,
 102                                    DSA_SIG *sig, DSA *dsa))
 103
 104 DEPRECATEDIN_3_0(const DSA_METHOD *DSA_OpenSSL(void))
 105
 106 DEPRECATEDIN_3_0(void DSA_set_default_method(const DSA_METHOD *))
 107 DEPRECATEDIN_3_0(const DSA_METHOD *DSA_get_default_method(void))
 108 DEPRECATEDIN_3_0(int DSA_set_method(DSA *dsa, const DSA_METHOD *))
 109 DEPRECATEDIN_3_0(const DSA_METHOD *DSA_get_method(DSA *d))
 110
 111 DSA *DSA_new(void);
 112 DEPRECATEDIN_3_0(DSA *DSA_new_method(ENGINE *engine))
 113 void DSA_free(DSA *r);
 114 /* "up" the DSA object's reference count */
 115 int DSA_up_ref(DSA *r);
 116 DEPRECATEDIN_3_0(int DSA_size(const DSA *))
 117 DEPRECATEDIN_3_0(int DSA_bits(const DSA *d))
 118 DEPRECATEDIN_3_0(int DSA_security_bits(const DSA *d))
 119         /* next 4 return -1 on error */
 120 DEPRECATEDIN_3_0(int DSA_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
 121                                     BIGNUM **rp))
 122 DEPRECATEDIN_3_0(int DSA_sign(int type, const unsigned char *dgst, int dlen,
 123                               unsigned char *sig, unsigned int *siglen,
 124                               DSA *dsa))
 125 DEPRECATEDIN_3_0(int DSA_verify(int type, const unsigned char *dgst,
 126                                 int dgst_len, const unsigned char *sigbuf,
 127                                 int siglen, DSA *dsa))
 128 #  ifndef OPENSSL_NO_DEPRECATED_3_0
 129 #   define DSA_get_ex_new_index(l, p, newf, dupf, freef) \
 130         CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DSA, l, p, newf, dupf, freef)
 131 #  endif
 132 DEPRECATEDIN_3_0(int DSA_set_ex_data(DSA *d, int idx, void *arg))
 133 DEPRECATEDIN_3_0(void *DSA_get_ex_data(DSA *d, int idx))
 134
 135 DECLARE_ASN1_ENCODE_FUNCTIONS_only(DSA, DSAPublicKey)
 136 DECLARE_ASN1_ENCODE_FUNCTIONS_only(DSA, DSAPrivateKey)
 137 DECLARE_ASN1_ENCODE_FUNCTIONS_only(DSA, DSAparams)
 138
 139 /* Deprecated version */
 140 DEPRECATEDIN_0_9_8(DSA *DSA_generate_parameters(int bits,
 141                                                 unsigned char *seed,
 142                                                 int seed_len,
 143                                                 int *counter_ret,
 144                                                 unsigned long *h_ret, void
 145                                                  (*callback) (int, int,
 146                                                               void *),
 147                                                 void *cb_arg))
 148
 149 /* New version */
 150 DEPRECATEDIN_3_0(int DSA_generate_parameters_ex(DSA *dsa, int bits,
 151                                                 const unsigned char *seed,
 152                                                 int seed_len, int *counter_ret,
 153                                                 unsigned long *h_ret,
 154                                                 BN_GENCB *cb))
 155
 156 DEPRECATEDIN_3_0(int DSA_generate_key(DSA *a))
 157
 158 DEPRECATEDIN_3_0(int DSAparams_print(BIO *bp, const DSA *x))
 159 DEPRECATEDIN_3_0(int DSA_print(BIO *bp, const DSA *x, int off))
 160 #  ifndef OPENSSL_NO_STDIO
 161 DEPRECATEDIN_3_0(int DSAparams_print_fp(FILE *fp, const DSA *x))
 162 DEPRECATEDIN_3_0(int DSA_print_fp(FILE *bp, const DSA *x, int off))
 163 #  endif
 164
 165 #  ifndef OPENSSL_NO_DEPRECATED_3_0
 166 #   define DSS_prime_checks 64
 167 /*
 168  * Primality test according to FIPS PUB 186-4, Appendix C.3. Since we only
 169  * have one value here we set the number of checks to 64 which is the 128 bit
 170  * security level that is the highest level and valid for creating a 3072 bit
 171  * DSA key.
 172  */
 173 #   define DSA_is_prime(n, callback, cb_arg) \
 174             BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg)
 175 #  endif
 176
 177 #  ifndef OPENSSL_NO_DH
 178 /*
 179  * Convert DSA structure (key or just parameters) into DH structure (be
 180  * careful to avoid small subgroup attacks when using this!)
 181  */
 182 DEPRECATEDIN_3_0(DH *DSA_dup_DH(const DSA *r))
 183 #  endif
 184
 185 #  define EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits) \
 186          EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, \
 187                            EVP_PKEY_CTRL_DSA_PARAMGEN_BITS, nbits, NULL)
 188 #  define EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, qbits) \
 189          EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, \
 190                            EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS, qbits, NULL)
 191 #  define EVP_PKEY_CTX_set_dsa_paramgen_md(ctx, md) \
 192          EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, \
 193                            EVP_PKEY_CTRL_DSA_PARAMGEN_MD, 0, (void *)(md))
 194
 195 #  define EVP_PKEY_CTRL_DSA_PARAMGEN_BITS         (EVP_PKEY_ALG_CTRL + 1)
 196 #  define EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS       (EVP_PKEY_ALG_CTRL + 2)
 197 #  define EVP_PKEY_CTRL_DSA_PARAMGEN_MD           (EVP_PKEY_ALG_CTRL + 3)
 198
 199 void DSA_get0_pqg(const DSA *d,
 200                   const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
 201 int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
 202 void DSA_get0_key(const DSA *d,
 203                   const BIGNUM **pub_key, const BIGNUM **priv_key);
 204 int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);
 205 const BIGNUM *DSA_get0_p(const DSA *d);
 206 const BIGNUM *DSA_get0_q(const DSA *d);
 207 const BIGNUM *DSA_get0_g(const DSA *d);
 208 const BIGNUM *DSA_get0_pub_key(const DSA *d);
 209 const BIGNUM *DSA_get0_priv_key(const DSA *d);
 210 void DSA_clear_flags(DSA *d, int flags);
 211 int DSA_test_flags(const DSA *d, int flags);
 212 void DSA_set_flags(DSA *d, int flags);
 213 DEPRECATEDIN_3_0(ENGINE *DSA_get0_engine(DSA *d))
 214
 215 DEPRECATEDIN_3_0(DSA_METHOD *DSA_meth_new(const char *name, int flags))
 216 DEPRECATEDIN_3_0(void DSA_meth_free(DSA_METHOD *dsam))
 217 DEPRECATEDIN_3_0(DSA_METHOD *DSA_meth_dup(const DSA_METHOD *dsam))
 218 DEPRECATEDIN_3_0(const char *DSA_meth_get0_name(const DSA_METHOD *dsam))
 219 DEPRECATEDIN_3_0(int DSA_meth_set1_name(DSA_METHOD *dsam, const char *name))
 220 DEPRECATEDIN_3_0(int DSA_meth_get_flags(const DSA_METHOD *dsam))
 221 DEPRECATEDIN_3_0(int DSA_meth_set_flags(DSA_METHOD *dsam, int flags))
 222 DEPRECATEDIN_3_0(void *DSA_meth_get0_app_data(const DSA_METHOD *dsam))
 223 DEPRECATEDIN_3_0(int DSA_meth_set0_app_data(DSA_METHOD *dsam, void *app_data))
 224 DEPRECATEDIN_3_0(DSA_SIG *(*DSA_meth_get_sign(const DSA_METHOD *dsam))
 225         (const unsigned char *, int, DSA *))
 226 DEPRECATEDIN_3_0(int DSA_meth_set_sign(DSA_METHOD *dsam,
 227                        DSA_SIG *(*sign) (const unsigned char *, int, DSA *)))
 228 DEPRECATEDIN_3_0(int (*DSA_meth_get_sign_setup(const DSA_METHOD *dsam))
 229         (DSA *, BN_CTX *, BIGNUM **, BIGNUM **))
 230 DEPRECATEDIN_3_0(int DSA_meth_set_sign_setup(DSA_METHOD *dsam,
 231         int (*sign_setup) (DSA *, BN_CTX *, BIGNUM **, BIGNUM **)))
 232 DEPRECATEDIN_3_0(int (*DSA_meth_get_verify(const DSA_METHOD *dsam))
 233         (const unsigned char *, int, DSA_SIG *, DSA *))
 234 DEPRECATEDIN_3_0(int DSA_meth_set_verify(DSA_METHOD *dsam,
 235     int (*verify) (const unsigned char *, int, DSA_SIG *, DSA *)))
 236 DEPRECATEDIN_3_0(int (*DSA_meth_get_mod_exp(const DSA_METHOD *dsam))
 237         (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
 238          const BIGNUM *, const BIGNUM *, BN_CTX *, BN_MONT_CTX *))
 239 DEPRECATEDIN_3_0(int DSA_meth_set_mod_exp(DSA_METHOD *dsam,
 240     int (*mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
 241                     const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *,
 242                     BN_MONT_CTX *)))
 243 DEPRECATEDIN_3_0(int (*DSA_meth_get_bn_mod_exp(const DSA_METHOD *dsam))
 244     (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
 245      BN_CTX *, BN_MONT_CTX *))
 246 DEPRECATEDIN_3_0(int DSA_meth_set_bn_mod_exp(DSA_METHOD *dsam,
 247     int (*bn_mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
 248                        const BIGNUM *, BN_CTX *, BN_MONT_CTX *)))
 249 DEPRECATEDIN_3_0(int (*DSA_meth_get_init(const DSA_METHOD *dsam))(DSA *))
 250 DEPRECATEDIN_3_0(int DSA_meth_set_init(DSA_METHOD *dsam, int (*init)(DSA *)))
 251 DEPRECATEDIN_3_0(int (*DSA_meth_get_finish(const DSA_METHOD *dsam)) (DSA *))
 252 DEPRECATEDIN_3_0(int DSA_meth_set_finish(DSA_METHOD *dsam, int (*finish) (DSA *)))
 253 DEPRECATEDIN_3_0(int (*DSA_meth_get_paramgen(const DSA_METHOD *dsam))
 254         (DSA *, int, const unsigned char *, int, int *, unsigned long *,
 255          BN_GENCB *))
 256 DEPRECATEDIN_3_0(int DSA_meth_set_paramgen(DSA_METHOD *dsam,
 257         int (*paramgen) (DSA *, int, const unsigned char *, int, int *,
 258                          unsigned long *, BN_GENCB *)))
 259 DEPRECATEDIN_3_0(int (*DSA_meth_get_keygen(const DSA_METHOD *dsam)) (DSA *))
 260 DEPRECATEDIN_3_0(int DSA_meth_set_keygen(DSA_METHOD *dsam, int (*keygen) (DSA *)))
 261
 262 #  ifdef  __cplusplus
 263 }
 264 #  endif
 265 # endif
 266 #endif