2 * Copyright 2007-2016 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
10 #include <openssl/dsa.h>
14 * This first variable is used to pick up errors where a DSA is passed
15 * instead of of a EVP_PKEY
20 BIGNUM *q; /* == 20 */
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;
28 CRYPTO_EX_DATA ex_data;
29 const DSA_METHOD *meth;
30 /* functional reference if 'meth' is ENGINE-provided */
37 DSA_SIG *(*dsa_do_sign) (const unsigned char *dgst, int dlen, DSA *dsa);
38 int (*dsa_sign_setup) (DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
40 int (*dsa_do_verify) (const unsigned char *dgst, int dgst_len,
41 DSA_SIG *sig, DSA *dsa);
42 int (*dsa_mod_exp) (DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1,
43 BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx,
44 BN_MONT_CTX *in_mont);
46 int (*bn_mod_exp) (DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
47 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
48 int (*init) (DSA *dsa);
49 int (*finish) (DSA *dsa);
52 /* If this is non-NULL, it is used to generate DSA parameters */
53 int (*dsa_paramgen) (DSA *dsa, int bits,
54 const unsigned char *seed, int seed_len,
55 int *counter_ret, unsigned long *h_ret,
57 /* If this is non-NULL, it is used to generate DSA keys */
58 int (*dsa_keygen) (DSA *dsa);
61 int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits,
62 const EVP_MD *evpmd, const unsigned char *seed_in,
63 size_t seed_len, unsigned char *seed_out,
64 int *counter_ret, unsigned long *h_ret,
67 int dsa_builtin_paramgen2(DSA *ret, size_t L, size_t N,
68 const EVP_MD *evpmd, const unsigned char *seed_in,
69 size_t seed_len, int idx, unsigned char *seed_out,
70 int *counter_ret, unsigned long *h_ret,