2 * Copyright 2007-2016 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 */
37 size_t dirty_cnt; /* If any key material changes, increment this */
47 DSA_SIG *(*dsa_do_sign) (const unsigned char *dgst, int dlen, DSA *dsa);
48 int (*dsa_sign_setup) (DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
50 int (*dsa_do_verify) (const unsigned char *dgst, int dgst_len,
51 DSA_SIG *sig, DSA *dsa);
52 int (*dsa_mod_exp) (DSA *dsa, BIGNUM *rr, const BIGNUM *a1,
53 const BIGNUM *p1, const BIGNUM *a2, const BIGNUM *p2,
54 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont);
56 int (*bn_mod_exp) (DSA *dsa, BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
57 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
58 int (*init) (DSA *dsa);
59 int (*finish) (DSA *dsa);
62 /* If this is non-NULL, it is used to generate DSA parameters */
63 int (*dsa_paramgen) (DSA *dsa, int bits,
64 const unsigned char *seed, int seed_len,
65 int *counter_ret, unsigned long *h_ret,
67 /* If this is non-NULL, it is used to generate DSA keys */
68 int (*dsa_keygen) (DSA *dsa);
71 int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits,
72 const EVP_MD *evpmd, const unsigned char *seed_in,
73 size_t seed_len, unsigned char *seed_out,
74 int *counter_ret, unsigned long *h_ret,
77 int dsa_builtin_paramgen2(DSA *ret, size_t L, size_t N,
78 const EVP_MD *evpmd, const unsigned char *seed_in,
79 size_t seed_len, int idx, unsigned char *seed_out,
80 int *counter_ret, unsigned long *h_ret,
83 DSA_SIG *dsa_do_sign_int(OPENSSL_CTX *libctx, const unsigned char *dgst,