2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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
11 # define OPENSSL_DSA_H
14 # include <openssl/macros.h>
15 # ifndef OPENSSL_NO_DEPRECATED_3_0
19 # include <openssl/opensslconf.h>
20 # include <openssl/types.h>
28 int EVP_PKEY_CTX_set_dsa_paramgen_bits(EVP_PKEY_CTX *ctx, int nbits);
29 int EVP_PKEY_CTX_set_dsa_paramgen_q_bits(EVP_PKEY_CTX *ctx, int qbits);
30 int EVP_PKEY_CTX_set_dsa_paramgen_md_props(EVP_PKEY_CTX *ctx,
32 const char *md_properties);
33 int EVP_PKEY_CTX_set_dsa_paramgen_gindex(EVP_PKEY_CTX *ctx, int gindex);
34 int EVP_PKEY_CTX_set_dsa_paramgen_type(EVP_PKEY_CTX *ctx, const char *name);
35 int EVP_PKEY_CTX_set_dsa_paramgen_seed(EVP_PKEY_CTX *ctx,
36 const unsigned char *seed,
38 int EVP_PKEY_CTX_set_dsa_paramgen_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
40 # define EVP_PKEY_CTRL_DSA_PARAMGEN_BITS (EVP_PKEY_ALG_CTRL + 1)
41 # define EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS (EVP_PKEY_ALG_CTRL + 2)
42 # define EVP_PKEY_CTRL_DSA_PARAMGEN_MD (EVP_PKEY_ALG_CTRL + 3)
44 # ifndef OPENSSL_NO_DSA
45 # include <openssl/e_os2.h>
46 # include <openssl/asn1.h>
47 # include <openssl/bio.h>
48 # include <openssl/crypto.h>
49 # include <openssl/bn.h>
50 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
51 # include <openssl/dh.h>
53 # include <openssl/dsaerr.h>
55 # ifndef OPENSSL_DSA_MAX_MODULUS_BITS
56 # define OPENSSL_DSA_MAX_MODULUS_BITS 10000
59 # define OPENSSL_DSA_FIPS_MIN_MODULUS_BITS 1024
61 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
63 * Does nothing. Previously this switched off constant time behaviour.
65 # define DSA_FLAG_NO_EXP_CONSTTIME 0x00
68 # ifndef OPENSSL_NO_DEPRECATED_3_0
69 # define DSA_FLAG_CACHE_MONT_P 0x01
72 * If this flag is set the DSA method is FIPS compliant and can be used in
73 * FIPS mode. This is set in the validated module method. If an application
74 * sets this flag in its own methods it is its responsibility to ensure the
75 * result is compliant.
78 # define DSA_FLAG_FIPS_METHOD 0x0400
81 * If this flag is set the operations normally disabled in FIPS mode are
82 * permitted it is then the applications responsibility to ensure that the
86 # define DSA_FLAG_NON_FIPS_ALLOW 0x0400
87 # define DSA_FLAG_FIPS_CHECKED 0x0800
88 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
90 /* Already defined in ossl_typ.h */
91 /* typedef struct dsa_st DSA; */
92 /* typedef struct dsa_method DSA_METHOD; */
94 typedef struct DSA_SIG_st DSA_SIG;
97 * TODO(3.0): consider removing the ASN.1 encoding and decoding when
98 * deserialization is completed elsewhere.
100 # define d2i_DSAparams_fp(fp, x) \
101 (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \
102 (char *(*)())d2i_DSAparams, (fp), \
103 (unsigned char **)(x))
104 # define i2d_DSAparams_fp(fp, x) \
105 ASN1_i2d_fp(i2d_DSAparams, (fp), (unsigned char *)(x))
106 # define d2i_DSAparams_bio(bp, x) \
107 ASN1_d2i_bio_of(DSA, DSA_new, d2i_DSAparams, bp, x)
108 # define i2d_DSAparams_bio(bp, x) \
109 ASN1_i2d_bio_of(DSA, i2d_DSAparams, bp, x)
111 DECLARE_ASN1_DUP_FUNCTION_name(DSA, DSAparams)
112 DSA_SIG *DSA_SIG_new(void);
113 void DSA_SIG_free(DSA_SIG *a);
114 DECLARE_ASN1_ENCODE_FUNCTIONS_only(DSA_SIG, DSA_SIG)
115 void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
116 int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s);
118 DEPRECATEDIN_3_0(DSA_SIG *DSA_do_sign(const unsigned char *dgst, int dlen,
120 DEPRECATEDIN_3_0(int DSA_do_verify(const unsigned char *dgst, int dgst_len,
121 DSA_SIG *sig, DSA *dsa))
123 DEPRECATEDIN_3_0(const DSA_METHOD *DSA_OpenSSL(void))
125 DEPRECATEDIN_3_0(void DSA_set_default_method(const DSA_METHOD *))
126 DEPRECATEDIN_3_0(const DSA_METHOD *DSA_get_default_method(void))
127 DEPRECATEDIN_3_0(int DSA_set_method(DSA *dsa, const DSA_METHOD *))
128 DEPRECATEDIN_3_0(const DSA_METHOD *DSA_get_method(DSA *d))
131 DEPRECATEDIN_3_0(DSA *DSA_new_method(ENGINE *engine))
132 void DSA_free(DSA *r);
133 /* "up" the DSA object's reference count */
134 int DSA_up_ref(DSA *r);
135 DEPRECATEDIN_3_0(int DSA_size(const DSA *))
136 int DSA_bits(const DSA *d);
137 DEPRECATEDIN_3_0(int DSA_security_bits(const DSA *d))
138 /* next 4 return -1 on error */
139 DEPRECATEDIN_3_0(int DSA_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
141 DEPRECATEDIN_3_0(int DSA_sign(int type, const unsigned char *dgst, int dlen,
142 unsigned char *sig, unsigned int *siglen,
144 DEPRECATEDIN_3_0(int DSA_verify(int type, const unsigned char *dgst,
145 int dgst_len, const unsigned char *sigbuf,
146 int siglen, DSA *dsa))
147 # ifndef OPENSSL_NO_DEPRECATED_3_0
148 # define DSA_get_ex_new_index(l, p, newf, dupf, freef) \
149 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DSA, l, p, newf, dupf, freef)
151 DEPRECATEDIN_3_0(int DSA_set_ex_data(DSA *d, int idx, void *arg))
152 DEPRECATEDIN_3_0(void *DSA_get_ex_data(const DSA *d, int idx))
154 DECLARE_ASN1_ENCODE_FUNCTIONS_only(DSA, DSAPublicKey)
155 DECLARE_ASN1_ENCODE_FUNCTIONS_only(DSA, DSAPrivateKey)
156 DECLARE_ASN1_ENCODE_FUNCTIONS_only(DSA, DSAparams)
158 /* Deprecated version */
159 DEPRECATEDIN_0_9_8(DSA *DSA_generate_parameters(int bits,
163 unsigned long *h_ret, void
164 (*callback) (int, int,
169 DEPRECATEDIN_3_0(int DSA_generate_parameters_ex(DSA *dsa, int bits,
170 const unsigned char *seed,
171 int seed_len, int *counter_ret,
172 unsigned long *h_ret,
175 DEPRECATEDIN_3_0(int DSA_generate_key(DSA *a))
177 DEPRECATEDIN_3_0(int DSAparams_print(BIO *bp, const DSA *x))
178 DEPRECATEDIN_3_0(int DSA_print(BIO *bp, const DSA *x, int off))
179 # ifndef OPENSSL_NO_STDIO
180 DEPRECATEDIN_3_0(int DSAparams_print_fp(FILE *fp, const DSA *x))
181 DEPRECATEDIN_3_0(int DSA_print_fp(FILE *bp, const DSA *x, int off))
184 # ifndef OPENSSL_NO_DEPRECATED_3_0
185 # define DSS_prime_checks 64
187 * Primality test according to FIPS PUB 186-4, Appendix C.3. Since we only
188 * have one value here we set the number of checks to 64 which is the 128 bit
189 * security level that is the highest level and valid for creating a 3072 bit
192 # define DSA_is_prime(n, callback, cb_arg) \
193 BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg)
196 # ifndef OPENSSL_NO_DH
198 * Convert DSA structure (key or just parameters) into DH structure (be
199 * careful to avoid small subgroup attacks when using this!)
201 DEPRECATEDIN_3_0(DH *DSA_dup_DH(const DSA *r))
204 void DSA_get0_pqg(const DSA *d,
205 const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
206 int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
207 void DSA_get0_key(const DSA *d,
208 const BIGNUM **pub_key, const BIGNUM **priv_key);
209 int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);
210 const BIGNUM *DSA_get0_p(const DSA *d);
211 const BIGNUM *DSA_get0_q(const DSA *d);
212 const BIGNUM *DSA_get0_g(const DSA *d);
213 const BIGNUM *DSA_get0_pub_key(const DSA *d);
214 const BIGNUM *DSA_get0_priv_key(const DSA *d);
215 void DSA_clear_flags(DSA *d, int flags);
216 int DSA_test_flags(const DSA *d, int flags);
217 void DSA_set_flags(DSA *d, int flags);
218 DEPRECATEDIN_3_0(ENGINE *DSA_get0_engine(DSA *d))
220 DEPRECATEDIN_3_0(DSA_METHOD *DSA_meth_new(const char *name, int flags))
221 DEPRECATEDIN_3_0(void DSA_meth_free(DSA_METHOD *dsam))
222 DEPRECATEDIN_3_0(DSA_METHOD *DSA_meth_dup(const DSA_METHOD *dsam))
223 DEPRECATEDIN_3_0(const char *DSA_meth_get0_name(const DSA_METHOD *dsam))
224 DEPRECATEDIN_3_0(int DSA_meth_set1_name(DSA_METHOD *dsam, const char *name))
225 DEPRECATEDIN_3_0(int DSA_meth_get_flags(const DSA_METHOD *dsam))
226 DEPRECATEDIN_3_0(int DSA_meth_set_flags(DSA_METHOD *dsam, int flags))
227 DEPRECATEDIN_3_0(void *DSA_meth_get0_app_data(const DSA_METHOD *dsam))
228 DEPRECATEDIN_3_0(int DSA_meth_set0_app_data(DSA_METHOD *dsam, void *app_data))
229 DEPRECATEDIN_3_0(DSA_SIG *(*DSA_meth_get_sign(const DSA_METHOD *dsam))
230 (const unsigned char *, int, DSA *))
231 DEPRECATEDIN_3_0(int DSA_meth_set_sign(DSA_METHOD *dsam,
232 DSA_SIG *(*sign) (const unsigned char *, int, DSA *)))
233 DEPRECATEDIN_3_0(int (*DSA_meth_get_sign_setup(const DSA_METHOD *dsam))
234 (DSA *, BN_CTX *, BIGNUM **, BIGNUM **))
235 DEPRECATEDIN_3_0(int DSA_meth_set_sign_setup(DSA_METHOD *dsam,
236 int (*sign_setup) (DSA *, BN_CTX *, BIGNUM **, BIGNUM **)))
237 DEPRECATEDIN_3_0(int (*DSA_meth_get_verify(const DSA_METHOD *dsam))
238 (const unsigned char *, int, DSA_SIG *, DSA *))
239 DEPRECATEDIN_3_0(int DSA_meth_set_verify(DSA_METHOD *dsam,
240 int (*verify) (const unsigned char *, int, DSA_SIG *, DSA *)))
241 DEPRECATEDIN_3_0(int (*DSA_meth_get_mod_exp(const DSA_METHOD *dsam))
242 (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
243 const BIGNUM *, const BIGNUM *, BN_CTX *, BN_MONT_CTX *))
244 DEPRECATEDIN_3_0(int DSA_meth_set_mod_exp(DSA_METHOD *dsam,
245 int (*mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
246 const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *,
248 DEPRECATEDIN_3_0(int (*DSA_meth_get_bn_mod_exp(const DSA_METHOD *dsam))
249 (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
250 BN_CTX *, BN_MONT_CTX *))
251 DEPRECATEDIN_3_0(int DSA_meth_set_bn_mod_exp(DSA_METHOD *dsam,
252 int (*bn_mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
253 const BIGNUM *, BN_CTX *, BN_MONT_CTX *)))
254 DEPRECATEDIN_3_0(int (*DSA_meth_get_init(const DSA_METHOD *dsam))(DSA *))
255 DEPRECATEDIN_3_0(int DSA_meth_set_init(DSA_METHOD *dsam, int (*init)(DSA *)))
256 DEPRECATEDIN_3_0(int (*DSA_meth_get_finish(const DSA_METHOD *dsam)) (DSA *))
257 DEPRECATEDIN_3_0(int DSA_meth_set_finish(DSA_METHOD *dsam, int (*finish) (DSA *)))
258 DEPRECATEDIN_3_0(int (*DSA_meth_get_paramgen(const DSA_METHOD *dsam))
259 (DSA *, int, const unsigned char *, int, int *, unsigned long *,
261 DEPRECATEDIN_3_0(int DSA_meth_set_paramgen(DSA_METHOD *dsam,
262 int (*paramgen) (DSA *, int, const unsigned char *, int, int *,
263 unsigned long *, BN_GENCB *)))
264 DEPRECATEDIN_3_0(int (*DSA_meth_get_keygen(const DSA_METHOD *dsam)) (DSA *))
265 DEPRECATEDIN_3_0(int DSA_meth_set_keygen(DSA_METHOD *dsam, int (*keygen) (DSA *)))