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git.ipfire.org Git - thirdparty/openssl.git/blob - include/openssl/dsa.h
2 * Copyright 1995-2016 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
11 * The DSS routines are based on patches supplied by
12 * Steven Schoch <schoch@sheba.arc.nasa.gov>.
18 # include <openssl/opensslconf.h>
20 # ifndef OPENSSL_NO_DSA
24 # include <openssl/e_os2.h>
25 # include <openssl/bio.h>
26 # include <openssl/crypto.h>
27 # include <openssl/ossl_typ.h>
28 # include <openssl/opensslconf.h>
29 # include <openssl/bn.h>
30 # if OPENSSL_API_COMPAT < 0x10100000L
31 # include <openssl/dh.h>
33 # include <openssl/dsaerr.h>
35 # ifndef OPENSSL_DSA_MAX_MODULUS_BITS
36 # define OPENSSL_DSA_MAX_MODULUS_BITS 10000
39 # define OPENSSL_DSA_FIPS_MIN_MODULUS_BITS 1024
41 # define DSA_FLAG_CACHE_MONT_P 0x01
42 # if OPENSSL_API_COMPAT < 0x10100000L
44 * Does nothing. Previously this switched off constant time behaviour.
46 # define DSA_FLAG_NO_EXP_CONSTTIME 0x00
50 * If this flag is set the DSA method is FIPS compliant and can be used in
51 * FIPS mode. This is set in the validated module method. If an application
52 * sets this flag in its own methods it is its responsibility to ensure the
53 * result is compliant.
56 # define DSA_FLAG_FIPS_METHOD 0x0400
59 * If this flag is set the operations normally disabled in FIPS mode are
60 * permitted it is then the applications responsibility to ensure that the
64 # define DSA_FLAG_NON_FIPS_ALLOW 0x0400
65 # define DSA_FLAG_FIPS_CHECKED 0x0800
67 /* Already defined in ossl_typ.h */
68 /* typedef struct dsa_st DSA; */
69 /* typedef struct dsa_method DSA_METHOD; */
71 typedef struct DSA_SIG_st DSA_SIG
;
73 # define d2i_DSAparams_fp(fp,x) (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \
74 (char *(*)())d2i_DSAparams,(fp),(unsigned char **)(x))
75 # define i2d_DSAparams_fp(fp,x) ASN1_i2d_fp(i2d_DSAparams,(fp), \
77 # define d2i_DSAparams_bio(bp,x) ASN1_d2i_bio_of(DSA,DSA_new,d2i_DSAparams,bp,x)
78 # define i2d_DSAparams_bio(bp,x) ASN1_i2d_bio_of_const(DSA,i2d_DSAparams,bp,x)
80 DSA
*DSAparams_dup(DSA
*x
);
81 DSA_SIG
*DSA_SIG_new(void);
82 void DSA_SIG_free(DSA_SIG
*a
);
83 int i2d_DSA_SIG(const DSA_SIG
*a
, unsigned char **pp
);
84 DSA_SIG
*d2i_DSA_SIG(DSA_SIG
**v
, const unsigned char **pp
, long length
);
85 void DSA_SIG_get0(const DSA_SIG
*sig
, const BIGNUM
**pr
, const BIGNUM
**ps
);
86 int DSA_SIG_set0(DSA_SIG
*sig
, BIGNUM
*r
, BIGNUM
*s
);
88 DSA_SIG
*DSA_do_sign(const unsigned char *dgst
, int dlen
, DSA
*dsa
);
89 int DSA_do_verify(const unsigned char *dgst
, int dgst_len
,
90 DSA_SIG
*sig
, DSA
*dsa
);
92 const DSA_METHOD
*DSA_OpenSSL(void);
94 void DSA_set_default_method(const DSA_METHOD
*);
95 const DSA_METHOD
*DSA_get_default_method(void);
96 int DSA_set_method(DSA
*dsa
, const DSA_METHOD
*);
97 const DSA_METHOD
*DSA_get_method(DSA
*d
);
100 DSA
*DSA_new_method(ENGINE
*engine
);
101 void DSA_free(DSA
*r
);
102 /* "up" the DSA object's reference count */
103 int DSA_up_ref(DSA
*r
);
104 int DSA_size(const DSA
*);
105 int DSA_bits(const DSA
*d
);
106 int DSA_security_bits(const DSA
*d
);
107 /* next 4 return -1 on error */
108 int DSA_sign_setup(DSA
*dsa
, BN_CTX
*ctx_in
, BIGNUM
**kinvp
, BIGNUM
**rp
);
109 int DSA_sign(int type
, const unsigned char *dgst
, int dlen
,
110 unsigned char *sig
, unsigned int *siglen
, DSA
*dsa
);
111 int DSA_verify(int type
, const unsigned char *dgst
, int dgst_len
,
112 const unsigned char *sigbuf
, int siglen
, DSA
*dsa
);
113 #define DSA_get_ex_new_index(l, p, newf, dupf, freef) \
114 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DSA, l, p, newf, dupf, freef)
115 int DSA_set_ex_data(DSA
*d
, int idx
, void *arg
);
116 void *DSA_get_ex_data(DSA
*d
, int idx
);
118 DSA
*d2i_DSAPublicKey(DSA
**a
, const unsigned char **pp
, long length
);
119 DSA
*d2i_DSAPrivateKey(DSA
**a
, const unsigned char **pp
, long length
);
120 DSA
*d2i_DSAparams(DSA
**a
, const unsigned char **pp
, long length
);
122 /* Deprecated version */
123 DEPRECATEDIN_0_9_8(DSA
*DSA_generate_parameters(int bits
,
127 unsigned long *h_ret
, void
128 (*callback
) (int, int,
133 int DSA_generate_parameters_ex(DSA
*dsa
, int bits
,
134 const unsigned char *seed
, int seed_len
,
135 int *counter_ret
, unsigned long *h_ret
,
138 int DSA_generate_key(DSA
*a
);
139 int i2d_DSAPublicKey(const DSA
*a
, unsigned char **pp
);
140 int i2d_DSAPrivateKey(const DSA
*a
, unsigned char **pp
);
141 int i2d_DSAparams(const DSA
*a
, unsigned char **pp
);
143 int DSAparams_print(BIO
*bp
, const DSA
*x
);
144 int DSA_print(BIO
*bp
, const DSA
*x
, int off
);
145 # ifndef OPENSSL_NO_STDIO
146 int DSAparams_print_fp(FILE *fp
, const DSA
*x
);
147 int DSA_print_fp(FILE *bp
, const DSA
*x
, int off
);
150 # define DSS_prime_checks 50
152 * Primality test according to FIPS PUB 186[-1], Appendix 2.1: 50 rounds of
155 # define DSA_is_prime(n, callback, cb_arg) \
156 BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg)
158 # ifndef OPENSSL_NO_DH
160 * Convert DSA structure (key or just parameters) into DH structure (be
161 * careful to avoid small subgroup attacks when using this!)
163 DH
*DSA_dup_DH(const DSA
*r
);
166 # define EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits) \
167 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, \
168 EVP_PKEY_CTRL_DSA_PARAMGEN_BITS, nbits, NULL)
170 # define EVP_PKEY_CTRL_DSA_PARAMGEN_BITS (EVP_PKEY_ALG_CTRL + 1)
171 # define EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS (EVP_PKEY_ALG_CTRL + 2)
172 # define EVP_PKEY_CTRL_DSA_PARAMGEN_MD (EVP_PKEY_ALG_CTRL + 3)
174 void DSA_get0_pqg(const DSA
*d
,
175 const BIGNUM
**p
, const BIGNUM
**q
, const BIGNUM
**g
);
176 int DSA_set0_pqg(DSA
*d
, BIGNUM
*p
, BIGNUM
*q
, BIGNUM
*g
);
177 void DSA_get0_key(const DSA
*d
,
178 const BIGNUM
**pub_key
, const BIGNUM
**priv_key
);
179 int DSA_set0_key(DSA
*d
, BIGNUM
*pub_key
, BIGNUM
*priv_key
);
180 void DSA_clear_flags(DSA
*d
, int flags
);
181 int DSA_test_flags(const DSA
*d
, int flags
);
182 void DSA_set_flags(DSA
*d
, int flags
);
183 ENGINE
*DSA_get0_engine(DSA
*d
);
185 DSA_METHOD
*DSA_meth_new(const char *name
, int flags
);
186 void DSA_meth_free(DSA_METHOD
*dsam
);
187 DSA_METHOD
*DSA_meth_dup(const DSA_METHOD
*dsam
);
188 const char *DSA_meth_get0_name(const DSA_METHOD
*dsam
);
189 int DSA_meth_set1_name(DSA_METHOD
*dsam
, const char *name
);
190 int DSA_meth_get_flags(DSA_METHOD
*dsam
);
191 int DSA_meth_set_flags(DSA_METHOD
*dsam
, int flags
);
192 void *DSA_meth_get0_app_data(const DSA_METHOD
*dsam
);
193 int DSA_meth_set0_app_data(DSA_METHOD
*dsam
, void *app_data
);
194 DSA_SIG
*(*DSA_meth_get_sign(const DSA_METHOD
*dsam
))
195 (const unsigned char *, int, DSA
*);
196 int DSA_meth_set_sign(DSA_METHOD
*dsam
,
197 DSA_SIG
*(*sign
) (const unsigned char *, int, DSA
*));
198 int (*DSA_meth_get_sign_setup(const DSA_METHOD
*dsam
))
199 (DSA
*, BN_CTX
*, BIGNUM
**, BIGNUM
**);
200 int DSA_meth_set_sign_setup(DSA_METHOD
*dsam
,
201 int (*sign_setup
) (DSA
*, BN_CTX
*, BIGNUM
**, BIGNUM
**));
202 int (*DSA_meth_get_verify(const DSA_METHOD
*dsam
))
203 (const unsigned char *, int, DSA_SIG
*, DSA
*);
204 int DSA_meth_set_verify(DSA_METHOD
*dsam
,
205 int (*verify
) (const unsigned char *, int, DSA_SIG
*, DSA
*));
206 int (*DSA_meth_get_mod_exp(const DSA_METHOD
*dsam
))
207 (DSA
*, BIGNUM
*, const BIGNUM
*, const BIGNUM
*, const BIGNUM
*,
208 const BIGNUM
*, const BIGNUM
*, BN_CTX
*, BN_MONT_CTX
*);
209 int DSA_meth_set_mod_exp(DSA_METHOD
*dsam
,
210 int (*mod_exp
) (DSA
*, BIGNUM
*, const BIGNUM
*, const BIGNUM
*,
211 const BIGNUM
*, const BIGNUM
*, const BIGNUM
*, BN_CTX
*,
213 int (*DSA_meth_get_bn_mod_exp(const DSA_METHOD
*dsam
))
214 (DSA
*, BIGNUM
*, const BIGNUM
*, const BIGNUM
*, const BIGNUM
*,
215 BN_CTX
*, BN_MONT_CTX
*);
216 int DSA_meth_set_bn_mod_exp(DSA_METHOD
*dsam
,
217 int (*bn_mod_exp
) (DSA
*, BIGNUM
*, const BIGNUM
*, const BIGNUM
*,
218 const BIGNUM
*, BN_CTX
*, BN_MONT_CTX
*));
219 int (*DSA_meth_get_init(const DSA_METHOD
*dsam
))(DSA
*);
220 int DSA_meth_set_init(DSA_METHOD
*dsam
, int (*init
)(DSA
*));
221 int (*DSA_meth_get_finish(const DSA_METHOD
*dsam
)) (DSA
*);
222 int DSA_meth_set_finish(DSA_METHOD
*dsam
, int (*finish
) (DSA
*));
223 int (*DSA_meth_get_paramgen(const DSA_METHOD
*dsam
))
224 (DSA
*, int, const unsigned char *, int, int *, unsigned long *,
226 int DSA_meth_set_paramgen(DSA_METHOD
*dsam
,
227 int (*paramgen
) (DSA
*, int, const unsigned char *, int, int *,
228 unsigned long *, BN_GENCB
*));
229 int (*DSA_meth_get_keygen(const DSA_METHOD
*dsam
)) (DSA
*);
230 int DSA_meth_set_keygen(DSA_METHOD
*dsam
, int (*keygen
) (DSA
*));
232 int ERR_load_DSA_strings(void);