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/*
* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef OPENSSL_DSA_H
# define OPENSSL_DSA_H
# pragma once
# include <openssl/macros.h>
# ifndef OPENSSL_NO_DEPRECATED_3_0
# define HEADER_DSA_H
# endif
# include <openssl/opensslconf.h>
# include <openssl/types.h>
# ifdef __cplusplus
extern "C" {
# endif
# include <stdlib.h>
int EVP_PKEY_CTX_set_dsa_paramgen_bits(EVP_PKEY_CTX *ctx, int nbits);
int EVP_PKEY_CTX_set_dsa_paramgen_q_bits(EVP_PKEY_CTX *ctx, int qbits);
int EVP_PKEY_CTX_set_dsa_paramgen_md_props(EVP_PKEY_CTX *ctx,
const char *md_name,
const char *md_properties);
int EVP_PKEY_CTX_set_dsa_paramgen_gindex(EVP_PKEY_CTX *ctx, int gindex);
int EVP_PKEY_CTX_set_dsa_paramgen_type(EVP_PKEY_CTX *ctx, const char *name);
int EVP_PKEY_CTX_set_dsa_paramgen_seed(EVP_PKEY_CTX *ctx,
const unsigned char *seed,
size_t seedlen);
int EVP_PKEY_CTX_set_dsa_paramgen_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
# define EVP_PKEY_CTRL_DSA_PARAMGEN_BITS (EVP_PKEY_ALG_CTRL + 1)
# define EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS (EVP_PKEY_ALG_CTRL + 2)
# define EVP_PKEY_CTRL_DSA_PARAMGEN_MD (EVP_PKEY_ALG_CTRL + 3)
# ifndef OPENSSL_NO_DSA
# include <openssl/e_os2.h>
# include <openssl/asn1.h>
# include <openssl/bio.h>
# include <openssl/crypto.h>
# include <openssl/bn.h>
# ifndef OPENSSL_NO_DEPRECATED_1_1_0
# include <openssl/dh.h>
# endif
# include <openssl/dsaerr.h>
# ifndef OPENSSL_DSA_MAX_MODULUS_BITS
# define OPENSSL_DSA_MAX_MODULUS_BITS 10000
# endif
# define OPENSSL_DSA_FIPS_MIN_MODULUS_BITS 1024
typedef struct DSA_SIG_st DSA_SIG;
DSA_SIG *DSA_SIG_new(void);
void DSA_SIG_free(DSA_SIG *a);
DECLARE_ASN1_ENCODE_FUNCTIONS_only(DSA_SIG, DSA_SIG)
void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s);
# ifndef OPENSSL_NO_DEPRECATED_1_1_0
/*
* Does nothing. Previously this switched off constant time behaviour.
*/
# define DSA_FLAG_NO_EXP_CONSTTIME 0x00
# endif
# ifndef OPENSSL_NO_DEPRECATED_3_0
# define DSA_FLAG_CACHE_MONT_P 0x01
/*
* If this flag is set the DSA method is FIPS compliant and can be used in
* FIPS mode. This is set in the validated module method. If an application
* sets this flag in its own methods it is its responsibility to ensure the
* result is compliant.
*/
# define DSA_FLAG_FIPS_METHOD 0x0400
/*
* If this flag is set the operations normally disabled in FIPS mode are
* permitted it is then the applications responsibility to ensure that the
* usage is compliant.
*/
# define DSA_FLAG_NON_FIPS_ALLOW 0x0400
# define DSA_FLAG_FIPS_CHECKED 0x0800
/* Already defined in ossl_typ.h */
/* typedef struct dsa_st DSA; */
/* typedef struct dsa_method DSA_METHOD; */
# define d2i_DSAparams_fp(fp, x) \
(DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \
(char *(*)())d2i_DSAparams, (fp), \
(unsigned char **)(x))
# define i2d_DSAparams_fp(fp, x) \
ASN1_i2d_fp(i2d_DSAparams, (fp), (unsigned char *)(x))
# define d2i_DSAparams_bio(bp, x) \
ASN1_d2i_bio_of(DSA, DSA_new, d2i_DSAparams, bp, x)
# define i2d_DSAparams_bio(bp, x) \
ASN1_i2d_bio_of(DSA, i2d_DSAparams, bp, x)
DECLARE_ASN1_DUP_FUNCTION_name_attr(OSSL_DEPRECATEDIN_3_0, DSA, DSAparams)
OSSL_DEPRECATEDIN_3_0 DSA_SIG *DSA_do_sign(const unsigned char *dgst, int dlen,
DSA *dsa);
OSSL_DEPRECATEDIN_3_0 int DSA_do_verify(const unsigned char *dgst, int dgst_len,
DSA_SIG *sig, DSA *dsa);
OSSL_DEPRECATEDIN_3_0 const DSA_METHOD *DSA_OpenSSL(void);
OSSL_DEPRECATEDIN_3_0 void DSA_set_default_method(const DSA_METHOD *);
OSSL_DEPRECATEDIN_3_0 const DSA_METHOD *DSA_get_default_method(void);
OSSL_DEPRECATEDIN_3_0 int DSA_set_method(DSA *dsa, const DSA_METHOD *);
OSSL_DEPRECATEDIN_3_0 const DSA_METHOD *DSA_get_method(DSA *d);
OSSL_DEPRECATEDIN_3_0 DSA *DSA_new(void);
OSSL_DEPRECATEDIN_3_0 DSA *DSA_new_method(ENGINE *engine);
OSSL_DEPRECATEDIN_3_0 void DSA_free(DSA *r);
/* "up" the DSA object's reference count */
OSSL_DEPRECATEDIN_3_0 int DSA_up_ref(DSA *r);
OSSL_DEPRECATEDIN_3_0 int DSA_size(const DSA *);
OSSL_DEPRECATEDIN_3_0 int DSA_bits(const DSA *d);
OSSL_DEPRECATEDIN_3_0 int DSA_security_bits(const DSA *d);
/* next 4 return -1 on error */
OSSL_DEPRECATEDIN_3_0 int DSA_sign_setup(DSA *dsa, BN_CTX *ctx_in,
BIGNUM **kinvp, BIGNUM **rp);
OSSL_DEPRECATEDIN_3_0 int DSA_sign(int type, const unsigned char *dgst,
int dlen, unsigned char *sig,
unsigned int *siglen, DSA *dsa);
OSSL_DEPRECATEDIN_3_0 int DSA_verify(int type, const unsigned char *dgst,
int dgst_len, const unsigned char *sigbuf,
int siglen, DSA *dsa);
# define DSA_get_ex_new_index(l, p, newf, dupf, freef) \
CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DSA, l, p, newf, dupf, freef)
OSSL_DEPRECATEDIN_3_0 int DSA_set_ex_data(DSA *d, int idx, void *arg);
OSSL_DEPRECATEDIN_3_0 void *DSA_get_ex_data(const DSA *d, int idx);
DECLARE_ASN1_ENCODE_FUNCTIONS_only_attr(OSSL_DEPRECATEDIN_3_0,
DSA, DSAPublicKey)
DECLARE_ASN1_ENCODE_FUNCTIONS_only_attr(OSSL_DEPRECATEDIN_3_0,
DSA, DSAPrivateKey)
DECLARE_ASN1_ENCODE_FUNCTIONS_only_attr(OSSL_DEPRECATEDIN_3_0,
DSA, DSAparams)
# endif
# ifndef OPENSSL_NO_DEPRECATED_0_9_8
/* Deprecated version */
OSSL_DEPRECATEDIN_0_9_8
DSA *DSA_generate_parameters(int bits, unsigned char *seed, int seed_len,
int *counter_ret, unsigned long *h_ret,
void (*callback) (int, int, void *),
void *cb_arg);
# endif
# ifndef OPENSSL_NO_DEPRECATED_3_0
/* New version */
OSSL_DEPRECATEDIN_3_0 int DSA_generate_parameters_ex(DSA *dsa, int bits,
const unsigned char *seed,
int seed_len,
int *counter_ret,
unsigned long *h_ret,
BN_GENCB *cb);
OSSL_DEPRECATEDIN_3_0 int DSA_generate_key(DSA *a);
OSSL_DEPRECATEDIN_3_0 int DSAparams_print(BIO *bp, const DSA *x);
OSSL_DEPRECATEDIN_3_0 int DSA_print(BIO *bp, const DSA *x, int off);
# ifndef OPENSSL_NO_STDIO
OSSL_DEPRECATEDIN_3_0 int DSAparams_print_fp(FILE *fp, const DSA *x);
OSSL_DEPRECATEDIN_3_0 int DSA_print_fp(FILE *bp, const DSA *x, int off);
# endif
# define DSS_prime_checks 64
/*
* Primality test according to FIPS PUB 186-4, Appendix C.3. Since we only
* have one value here we set the number of checks to 64 which is the 128 bit
* security level that is the highest level and valid for creating a 3072 bit
* DSA key.
*/
# define DSA_is_prime(n, callback, cb_arg) \
BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg)
# ifndef OPENSSL_NO_DH
/*
* Convert DSA structure (key or just parameters) into DH structure (be
* careful to avoid small subgroup attacks when using this!)
*/
OSSL_DEPRECATEDIN_3_0 DH *DSA_dup_DH(const DSA *r);
# endif
OSSL_DEPRECATEDIN_3_0 void DSA_get0_pqg(const DSA *d, const BIGNUM **p,
const BIGNUM **q, const BIGNUM **g);
OSSL_DEPRECATEDIN_3_0 int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
OSSL_DEPRECATEDIN_3_0 void DSA_get0_key(const DSA *d, const BIGNUM **pub_key,
const BIGNUM **priv_key);
OSSL_DEPRECATEDIN_3_0 int DSA_set0_key(DSA *d, BIGNUM *pub_key,
BIGNUM *priv_key);
OSSL_DEPRECATEDIN_3_0 const BIGNUM *DSA_get0_p(const DSA *d);
OSSL_DEPRECATEDIN_3_0 const BIGNUM *DSA_get0_q(const DSA *d);
OSSL_DEPRECATEDIN_3_0 const BIGNUM *DSA_get0_g(const DSA *d);
OSSL_DEPRECATEDIN_3_0 const BIGNUM *DSA_get0_pub_key(const DSA *d);
OSSL_DEPRECATEDIN_3_0 const BIGNUM *DSA_get0_priv_key(const DSA *d);
OSSL_DEPRECATEDIN_3_0 void DSA_clear_flags(DSA *d, int flags);
OSSL_DEPRECATEDIN_3_0 int DSA_test_flags(const DSA *d, int flags);
OSSL_DEPRECATEDIN_3_0 void DSA_set_flags(DSA *d, int flags);
OSSL_DEPRECATEDIN_3_0 ENGINE *DSA_get0_engine(DSA *d);
OSSL_DEPRECATEDIN_3_0 DSA_METHOD *DSA_meth_new(const char *name, int flags);
OSSL_DEPRECATEDIN_3_0 void DSA_meth_free(DSA_METHOD *dsam);
OSSL_DEPRECATEDIN_3_0 DSA_METHOD *DSA_meth_dup(const DSA_METHOD *dsam);
OSSL_DEPRECATEDIN_3_0 const char *DSA_meth_get0_name(const DSA_METHOD *dsam);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set1_name(DSA_METHOD *dsam,
const char *name);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_get_flags(const DSA_METHOD *dsam);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_flags(DSA_METHOD *dsam, int flags);
OSSL_DEPRECATEDIN_3_0 void *DSA_meth_get0_app_data(const DSA_METHOD *dsam);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set0_app_data(DSA_METHOD *dsam,
void *app_data);
OSSL_DEPRECATEDIN_3_0 DSA_SIG *(*DSA_meth_get_sign(const DSA_METHOD *dsam))
(const unsigned char *, int, DSA *);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_sign(DSA_METHOD *dsam,
DSA_SIG *(*sign) (const unsigned char *, int, DSA *));
OSSL_DEPRECATEDIN_3_0 int (*DSA_meth_get_sign_setup(const DSA_METHOD *dsam))
(DSA *, BN_CTX *, BIGNUM **, BIGNUM **);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_sign_setup(DSA_METHOD *dsam,
int (*sign_setup) (DSA *, BN_CTX *, BIGNUM **, BIGNUM **));
OSSL_DEPRECATEDIN_3_0 int (*DSA_meth_get_verify(const DSA_METHOD *dsam))
(const unsigned char *, int, DSA_SIG *, DSA *);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_verify(DSA_METHOD *dsam,
int (*verify) (const unsigned char *, int, DSA_SIG *, DSA *));
OSSL_DEPRECATEDIN_3_0 int (*DSA_meth_get_mod_exp(const DSA_METHOD *dsam))
(DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
const BIGNUM *, const BIGNUM *, BN_CTX *, BN_MONT_CTX *);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_mod_exp(DSA_METHOD *dsam,
int (*mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *,
BN_MONT_CTX *));
OSSL_DEPRECATEDIN_3_0 int (*DSA_meth_get_bn_mod_exp(const DSA_METHOD *dsam))
(DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
BN_CTX *, BN_MONT_CTX *);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_bn_mod_exp(DSA_METHOD *dsam,
int (*bn_mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
const BIGNUM *, BN_CTX *, BN_MONT_CTX *));
OSSL_DEPRECATEDIN_3_0 int (*DSA_meth_get_init(const DSA_METHOD *dsam))(DSA *);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_init(DSA_METHOD *dsam,
int (*init)(DSA *));
OSSL_DEPRECATEDIN_3_0 int (*DSA_meth_get_finish(const DSA_METHOD *dsam))(DSA *);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_finish(DSA_METHOD *dsam,
int (*finish)(DSA *));
OSSL_DEPRECATEDIN_3_0 int (*DSA_meth_get_paramgen(const DSA_METHOD *dsam))
(DSA *, int, const unsigned char *, int, int *, unsigned long *,
BN_GENCB *);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_paramgen(DSA_METHOD *dsam,
int (*paramgen) (DSA *, int, const unsigned char *, int, int *,
unsigned long *, BN_GENCB *));
OSSL_DEPRECATEDIN_3_0 int (*DSA_meth_get_keygen(const DSA_METHOD *dsam))(DSA *);
OSSL_DEPRECATEDIN_3_0 int DSA_meth_set_keygen(DSA_METHOD *dsam,
int (*keygen) (DSA *));
# endif
# endif
# ifdef __cplusplus
}
# endif
#endif