2 * Copyright 2007-2020 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
10 #include <openssl/dsa.h>
11 #include "internal/refcount.h"
12 #include "internal/ffc.h"
16 * This first variable is used to pick up errors where a DSA is passed
17 * instead of of a EVP_PKEY
22 BIGNUM *pub_key; /* y public key */
23 BIGNUM *priv_key; /* x private key */
25 /* Normally used to cache montgomery values */
26 BN_MONT_CTX *method_mont_p;
27 CRYPTO_REF_COUNT references;
29 CRYPTO_EX_DATA ex_data;
31 const DSA_METHOD *meth;
32 /* functional reference if 'meth' is ENGINE-provided */
38 size_t dirty_cnt; /* If any key material changes, increment this */
48 DSA_SIG *(*dsa_do_sign) (const unsigned char *dgst, int dlen, DSA *dsa);
49 int (*dsa_sign_setup) (DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
51 int (*dsa_do_verify) (const unsigned char *dgst, int dgst_len,
52 DSA_SIG *sig, DSA *dsa);
53 int (*dsa_mod_exp) (DSA *dsa, BIGNUM *rr, const BIGNUM *a1,
54 const BIGNUM *p1, const BIGNUM *a2, const BIGNUM *p2,
55 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont);
57 int (*bn_mod_exp) (DSA *dsa, BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
58 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
59 int (*init) (DSA *dsa);
60 int (*finish) (DSA *dsa);
63 /* If this is non-NULL, it is used to generate DSA parameters */
64 int (*dsa_paramgen) (DSA *dsa, int bits,
65 const unsigned char *seed, int seed_len,
66 int *counter_ret, unsigned long *h_ret,
68 /* If this is non-NULL, it is used to generate DSA keys */
69 int (*dsa_keygen) (DSA *dsa);
72 DSA_SIG *dsa_do_sign_int(const unsigned char *dgst, int dlen, DSA *dsa);