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git.ipfire.org Git - thirdparty/openssl.git/blob - include/openssl/dsa.h
2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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
13 # include <openssl/opensslconf.h>
15 # ifndef OPENSSL_NO_DSA
19 # include <openssl/e_os2.h>
20 # include <openssl/bio.h>
21 # include <openssl/crypto.h>
22 # include <openssl/ossl_typ.h>
23 # include <openssl/opensslconf.h>
24 # include <openssl/bn.h>
25 # if OPENSSL_API_COMPAT < 0x10100000L
26 # include <openssl/dh.h>
28 # include <openssl/dsaerr.h>
30 # ifndef OPENSSL_DSA_MAX_MODULUS_BITS
31 # define OPENSSL_DSA_MAX_MODULUS_BITS 10000
34 # define OPENSSL_DSA_FIPS_MIN_MODULUS_BITS 1024
36 # define DSA_FLAG_CACHE_MONT_P 0x01
37 # if OPENSSL_API_COMPAT < 0x10100000L
39 * Does nothing. Previously this switched off constant time behaviour.
41 # define DSA_FLAG_NO_EXP_CONSTTIME 0x00
45 * If this flag is set the DSA method is FIPS compliant and can be used in
46 * FIPS mode. This is set in the validated module method. If an application
47 * sets this flag in its own methods it is its responsibility to ensure the
48 * result is compliant.
51 # define DSA_FLAG_FIPS_METHOD 0x0400
54 * If this flag is set the operations normally disabled in FIPS mode are
55 * permitted it is then the applications responsibility to ensure that the
59 # define DSA_FLAG_NON_FIPS_ALLOW 0x0400
60 # define DSA_FLAG_FIPS_CHECKED 0x0800
62 /* Already defined in ossl_typ.h */
63 /* typedef struct dsa_st DSA; */
64 /* typedef struct dsa_method DSA_METHOD; */
66 typedef struct DSA_SIG_st DSA_SIG
;
68 # define d2i_DSAparams_fp(fp,x) (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \
69 (char *(*)())d2i_DSAparams,(fp),(unsigned char **)(x))
70 # define i2d_DSAparams_fp(fp,x) ASN1_i2d_fp(i2d_DSAparams,(fp), \
72 # define d2i_DSAparams_bio(bp,x) ASN1_d2i_bio_of(DSA,DSA_new,d2i_DSAparams,bp,x)
73 # define i2d_DSAparams_bio(bp,x) ASN1_i2d_bio_of_const(DSA,i2d_DSAparams,bp,x)
75 DSA
*DSAparams_dup(DSA
*x
);
76 DSA_SIG
*DSA_SIG_new(void);
77 void DSA_SIG_free(DSA_SIG
*a
);
78 int i2d_DSA_SIG(const DSA_SIG
*a
, unsigned char **pp
);
79 DSA_SIG
*d2i_DSA_SIG(DSA_SIG
**v
, const unsigned char **pp
, long length
);
80 void DSA_SIG_get0(const DSA_SIG
*sig
, const BIGNUM
**pr
, const BIGNUM
**ps
);
81 int DSA_SIG_set0(DSA_SIG
*sig
, BIGNUM
*r
, BIGNUM
*s
);
83 DSA_SIG
*DSA_do_sign(const unsigned char *dgst
, int dlen
, DSA
*dsa
);
84 int DSA_do_verify(const unsigned char *dgst
, int dgst_len
,
85 DSA_SIG
*sig
, DSA
*dsa
);
87 const DSA_METHOD
*DSA_OpenSSL(void);
89 void DSA_set_default_method(const DSA_METHOD
*);
90 const DSA_METHOD
*DSA_get_default_method(void);
91 int DSA_set_method(DSA
*dsa
, const DSA_METHOD
*);
92 const DSA_METHOD
*DSA_get_method(DSA
*d
);
95 DSA
*DSA_new_method(ENGINE
*engine
);
96 void DSA_free(DSA
*r
);
97 /* "up" the DSA object's reference count */
98 int DSA_up_ref(DSA
*r
);
99 int DSA_size(const DSA
*);
100 int DSA_bits(const DSA
*d
);
101 int DSA_security_bits(const DSA
*d
);
102 /* next 4 return -1 on error */
103 int DSA_sign_setup(DSA
*dsa
, BN_CTX
*ctx_in
, BIGNUM
**kinvp
, BIGNUM
**rp
);
104 int DSA_sign(int type
, const unsigned char *dgst
, int dlen
,
105 unsigned char *sig
, unsigned int *siglen
, DSA
*dsa
);
106 int DSA_verify(int type
, const unsigned char *dgst
, int dgst_len
,
107 const unsigned char *sigbuf
, int siglen
, DSA
*dsa
);
108 #define DSA_get_ex_new_index(l, p, newf, dupf, freef) \
109 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DSA, l, p, newf, dupf, freef)
110 int DSA_set_ex_data(DSA
*d
, int idx
, void *arg
);
111 void *DSA_get_ex_data(DSA
*d
, int idx
);
113 DSA
*d2i_DSAPublicKey(DSA
**a
, const unsigned char **pp
, long length
);
114 DSA
*d2i_DSAPrivateKey(DSA
**a
, const unsigned char **pp
, long length
);
115 DSA
*d2i_DSAparams(DSA
**a
, const unsigned char **pp
, long length
);
117 /* Deprecated version */
118 DEPRECATEDIN_0_9_8(DSA
*DSA_generate_parameters(int bits
,
122 unsigned long *h_ret
, void
123 (*callback
) (int, int,
128 int DSA_generate_parameters_ex(DSA
*dsa
, int bits
,
129 const unsigned char *seed
, int seed_len
,
130 int *counter_ret
, unsigned long *h_ret
,
133 int DSA_generate_key(DSA
*a
);
134 int i2d_DSAPublicKey(const DSA
*a
, unsigned char **pp
);
135 int i2d_DSAPrivateKey(const DSA
*a
, unsigned char **pp
);
136 int i2d_DSAparams(const DSA
*a
, unsigned char **pp
);
138 int DSAparams_print(BIO
*bp
, const DSA
*x
);
139 int DSA_print(BIO
*bp
, const DSA
*x
, int off
);
140 # ifndef OPENSSL_NO_STDIO
141 int DSAparams_print_fp(FILE *fp
, const DSA
*x
);
142 int DSA_print_fp(FILE *bp
, const DSA
*x
, int off
);
145 # define DSS_prime_checks 50
147 * Primality test according to FIPS PUB 186[-1], Appendix 2.1: 50 rounds of
150 # define DSA_is_prime(n, callback, cb_arg) \
151 BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg)
153 # ifndef OPENSSL_NO_DH
155 * Convert DSA structure (key or just parameters) into DH structure (be
156 * careful to avoid small subgroup attacks when using this!)
158 DH
*DSA_dup_DH(const DSA
*r
);
161 # define EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits) \
162 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, \
163 EVP_PKEY_CTRL_DSA_PARAMGEN_BITS, nbits, NULL)
165 # define EVP_PKEY_CTRL_DSA_PARAMGEN_BITS (EVP_PKEY_ALG_CTRL + 1)
166 # define EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS (EVP_PKEY_ALG_CTRL + 2)
167 # define EVP_PKEY_CTRL_DSA_PARAMGEN_MD (EVP_PKEY_ALG_CTRL + 3)
169 void DSA_get0_pqg(const DSA
*d
,
170 const BIGNUM
**p
, const BIGNUM
**q
, const BIGNUM
**g
);
171 int DSA_set0_pqg(DSA
*d
, BIGNUM
*p
, BIGNUM
*q
, BIGNUM
*g
);
172 void DSA_get0_key(const DSA
*d
,
173 const BIGNUM
**pub_key
, const BIGNUM
**priv_key
);
174 int DSA_set0_key(DSA
*d
, BIGNUM
*pub_key
, BIGNUM
*priv_key
);
175 void DSA_clear_flags(DSA
*d
, int flags
);
176 int DSA_test_flags(const DSA
*d
, int flags
);
177 void DSA_set_flags(DSA
*d
, int flags
);
178 ENGINE
*DSA_get0_engine(DSA
*d
);
180 DSA_METHOD
*DSA_meth_new(const char *name
, int flags
);
181 void DSA_meth_free(DSA_METHOD
*dsam
);
182 DSA_METHOD
*DSA_meth_dup(const DSA_METHOD
*dsam
);
183 const char *DSA_meth_get0_name(const DSA_METHOD
*dsam
);
184 int DSA_meth_set1_name(DSA_METHOD
*dsam
, const char *name
);
185 int DSA_meth_get_flags(const DSA_METHOD
*dsam
);
186 int DSA_meth_set_flags(DSA_METHOD
*dsam
, int flags
);
187 void *DSA_meth_get0_app_data(const DSA_METHOD
*dsam
);
188 int DSA_meth_set0_app_data(DSA_METHOD
*dsam
, void *app_data
);
189 DSA_SIG
*(*DSA_meth_get_sign(const DSA_METHOD
*dsam
))
190 (const unsigned char *, int, DSA
*);
191 int DSA_meth_set_sign(DSA_METHOD
*dsam
,
192 DSA_SIG
*(*sign
) (const unsigned char *, int, DSA
*));
193 int (*DSA_meth_get_sign_setup(const DSA_METHOD
*dsam
))
194 (DSA
*, BN_CTX
*, BIGNUM
**, BIGNUM
**);
195 int DSA_meth_set_sign_setup(DSA_METHOD
*dsam
,
196 int (*sign_setup
) (DSA
*, BN_CTX
*, BIGNUM
**, BIGNUM
**));
197 int (*DSA_meth_get_verify(const DSA_METHOD
*dsam
))
198 (const unsigned char *, int, DSA_SIG
*, DSA
*);
199 int DSA_meth_set_verify(DSA_METHOD
*dsam
,
200 int (*verify
) (const unsigned char *, int, DSA_SIG
*, DSA
*));
201 int (*DSA_meth_get_mod_exp(const DSA_METHOD
*dsam
))
202 (DSA
*, BIGNUM
*, const BIGNUM
*, const BIGNUM
*, const BIGNUM
*,
203 const BIGNUM
*, const BIGNUM
*, BN_CTX
*, BN_MONT_CTX
*);
204 int DSA_meth_set_mod_exp(DSA_METHOD
*dsam
,
205 int (*mod_exp
) (DSA
*, BIGNUM
*, const BIGNUM
*, const BIGNUM
*,
206 const BIGNUM
*, const BIGNUM
*, const BIGNUM
*, BN_CTX
*,
208 int (*DSA_meth_get_bn_mod_exp(const DSA_METHOD
*dsam
))
209 (DSA
*, BIGNUM
*, const BIGNUM
*, const BIGNUM
*, const BIGNUM
*,
210 BN_CTX
*, BN_MONT_CTX
*);
211 int DSA_meth_set_bn_mod_exp(DSA_METHOD
*dsam
,
212 int (*bn_mod_exp
) (DSA
*, BIGNUM
*, const BIGNUM
*, const BIGNUM
*,
213 const BIGNUM
*, BN_CTX
*, BN_MONT_CTX
*));
214 int (*DSA_meth_get_init(const DSA_METHOD
*dsam
))(DSA
*);
215 int DSA_meth_set_init(DSA_METHOD
*dsam
, int (*init
)(DSA
*));
216 int (*DSA_meth_get_finish(const DSA_METHOD
*dsam
)) (DSA
*);
217 int DSA_meth_set_finish(DSA_METHOD
*dsam
, int (*finish
) (DSA
*));
218 int (*DSA_meth_get_paramgen(const DSA_METHOD
*dsam
))
219 (DSA
*, int, const unsigned char *, int, int *, unsigned long *,
221 int DSA_meth_set_paramgen(DSA_METHOD
*dsam
,
222 int (*paramgen
) (DSA
*, int, const unsigned char *, int, int *,
223 unsigned long *, BN_GENCB
*));
224 int (*DSA_meth_get_keygen(const DSA_METHOD
*dsam
)) (DSA
*);
225 int DSA_meth_set_keygen(DSA_METHOD
*dsam
, int (*keygen
) (DSA
*));