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"
15 * This first variable is used to pick up errors where a DSA is passed
16 * instead of of a EVP_PKEY
21 BIGNUM *q; /* == 20 */
23 BIGNUM *pub_key; /* y public key */
24 BIGNUM *priv_key; /* x private key */
26 /* Normally used to cache montgomery values */
27 BN_MONT_CTX *method_mont_p;
28 CRYPTO_REF_COUNT references;
30 CRYPTO_EX_DATA ex_data;
32 const DSA_METHOD *meth;
33 /* 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 int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits,
73 const EVP_MD *evpmd, const unsigned char *seed_in,
74 size_t seed_len, unsigned char *seed_out,
75 int *counter_ret, unsigned long *h_ret,
78 int dsa_builtin_paramgen2(DSA *ret, size_t L, size_t N,
79 const EVP_MD *evpmd, const unsigned char *seed_in,
80 size_t seed_len, int idx, unsigned char *seed_out,
81 int *counter_ret, unsigned long *h_ret,
84 DSA_SIG *dsa_do_sign_int(OPENSSL_CTX *libctx, const unsigned char *dgst,