crypto/ecdsa/ecdsatest.c

194     ECDSA_SIG *signature = NULL;
212     /* create the signature */
214     signature = ECDSA_do_sign(digest, 20, key);
215     if (signature == NULL)
219     /* compare the created signature with the expected signature */
224     if (BN_cmp(signature->r, r) || BN_cmp(signature->s, s))
228     /* verify the signature */
229     if (ECDSA_do_verify(digest, 20, signature, key) != 1)
241     if (signature)
242         ECDSA_SIG_free(signature);
298     unsigned char *signature = NULL;
313      * create and verify a ecdsa signature with every availble curve (with )
333     /* now create and verify a signature for every curve */
386         /* create signature */
388         if ((signature = OPENSSL_malloc(sig_len)) == NULL)
390         if (!ECDSA_sign(0, digest, 20, signature, &sig_len, eckey)) {
396         /* verify signature */
397         if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) != 1) {
403         /* verify signature with the wrong key */
404         if (ECDSA_verify(0, digest, 20, signature, sig_len, wrong_eckey) == 1) {
411         if (ECDSA_verify(0, wrong_digest, 20, signature, sig_len, eckey) == 1) {
418         if (ECDSA_verify(0, digest, 20, signature, sig_len - 1, eckey) == 1) {
426          * Modify a single byte of the signature: to ensure we don't garble
427          * the ASN1 structure, we read the raw signature and modify a byte in
430         sig_ptr = signature;
461         sig_ptr2 = signature;
463         if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) == 1) {
468          * Sanity check: undo the modification and verify signature.
475         sig_ptr2 = signature;
477         if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) != 1) {
488         OPENSSL_free(signature);
489         signature = NULL;
508     if (signature)
509         OPENSSL_free(signature);