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77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/*
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* Copyright 2007-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/dsa.h>
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#include "internal/refcount.h"
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struct dsa_st {
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/*
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* This first variable is used to pick up errors where a DSA is passed
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* instead of of a EVP_PKEY
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*/
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int pad;
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int32_t version;
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BIGNUM *p;
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BIGNUM *q; /* == 20 */
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BIGNUM *g;
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BIGNUM *pub_key; /* y public key */
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BIGNUM *priv_key; /* x private key */
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int flags;
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/* Normally used to cache montgomery values */
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BN_MONT_CTX *method_mont_p;
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CRYPTO_REF_COUNT references;
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CRYPTO_EX_DATA ex_data;
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const DSA_METHOD *meth;
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/* functional reference if 'meth' is ENGINE-provided */
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ENGINE *engine;
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CRYPTO_RWLOCK *lock;
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};
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struct DSA_SIG_st {
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BIGNUM *r;
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BIGNUM *s;
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};
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struct dsa_method {
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char *name;
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DSA_SIG *(*dsa_do_sign) (const unsigned char *dgst, int dlen, DSA *dsa);
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int (*dsa_sign_setup) (DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
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BIGNUM **rp);
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int (*dsa_do_verify) (const unsigned char *dgst, int dgst_len,
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DSA_SIG *sig, DSA *dsa);
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int (*dsa_mod_exp) (DSA *dsa, BIGNUM *rr, const BIGNUM *a1,
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const BIGNUM *p1, const BIGNUM *a2, const BIGNUM *p2,
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const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont);
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/* Can be null */
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int (*bn_mod_exp) (DSA *dsa, BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
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const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
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int (*init) (DSA *dsa);
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int (*finish) (DSA *dsa);
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int flags;
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void *app_data;
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/* If this is non-NULL, it is used to generate DSA parameters */
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int (*dsa_paramgen) (DSA *dsa, int bits,
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const unsigned char *seed, int seed_len,
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int *counter_ret, unsigned long *h_ret,
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BN_GENCB *cb);
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/* If this is non-NULL, it is used to generate DSA keys */
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int (*dsa_keygen) (DSA *dsa);
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};
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int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits,
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const EVP_MD *evpmd, const unsigned char *seed_in,
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size_t seed_len, unsigned char *seed_out,
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int *counter_ret, unsigned long *h_ret,
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BN_GENCB *cb);
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int dsa_builtin_paramgen2(DSA *ret, size_t L, size_t N,
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const EVP_MD *evpmd, const unsigned char *seed_in,
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size_t seed_len, int idx, unsigned char *seed_out,
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int *counter_ret, unsigned long *h_ret,
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BN_GENCB *cb);
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