#include <openssl/dsa.h>
+struct dsa_st {
+ /*
+ * This first variable is used to pick up errors where a DSA is passed
+ * instead of of a EVP_PKEY
+ */
+ int pad;
+ long version;
+ BIGNUM *p;
+ BIGNUM *q; /* == 20 */
+ BIGNUM *g;
+ BIGNUM *pub_key; /* y public key */
+ BIGNUM *priv_key; /* x private key */
+ int flags;
+ /* Normally used to cache montgomery values */
+ BN_MONT_CTX *method_mont_p;
+ int references;
+ CRYPTO_EX_DATA ex_data;
+ const DSA_METHOD *meth;
+ /* functional reference if 'meth' is ENGINE-provided */
+ ENGINE *engine;
+ CRYPTO_RWLOCK *lock;
+};
+
+struct dsa_method {
+ char *name;
+ DSA_SIG *(*dsa_do_sign) (const unsigned char *dgst, int dlen, DSA *dsa);
+ int (*dsa_sign_setup) (DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
+ BIGNUM **rp);
+ int (*dsa_do_verify) (const unsigned char *dgst, int dgst_len,
+ DSA_SIG *sig, DSA *dsa);
+ int (*dsa_mod_exp) (DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1,
+ BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx,
+ BN_MONT_CTX *in_mont);
+ /* Can be null */
+ int (*bn_mod_exp) (DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+ int (*init) (DSA *dsa);
+ int (*finish) (DSA *dsa);
+ int flags;
+ void *app_data;
+ /* If this is non-NULL, it is used to generate DSA parameters */
+ int (*dsa_paramgen) (DSA *dsa, int bits,
+ const unsigned char *seed, int seed_len,
+ int *counter_ret, unsigned long *h_ret,
+ BN_GENCB *cb);
+ /* If this is non-NULL, it is used to generate DSA keys */
+ int (*dsa_keygen) (DSA *dsa);
+};
+
int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits,
const EVP_MD *evpmd, const unsigned char *seed_in,
size_t seed_len, unsigned char *seed_out,
size_t seed_len, int idx, unsigned char *seed_out,
int *counter_ret, unsigned long *h_ret,
BN_GENCB *cb);
-
-struct DSA_SIG_st {
- BIGNUM *r;
- BIGNUM *s;
-};