DSA_do_sign, DSA_do_verify - raw DSA signature operations
#include <openssl/dsa.h>
The following functions have been deprecated since OpenSSL 3.0, and can be
hidden entirely by defining
OPENSSL_API_COMPAT with a suitable version
value, see
openssl_user_macros(7):
DSA_SIG *DSA_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
int DSA_do_verify(const unsigned char *dgst, int dgst_len,
DSA_SIG *sig, DSA *dsa);
All of the functions described on this page are deprecated. Applications should
instead use
EVP_PKEY_sign_init(3),
EVP_PKEY_sign(3),
EVP_PKEY_verify_init(3) and
EVP_PKEY_verify(3).
DSA_do_sign() computes a digital signature on the
len byte message
digest
dgst using the private key
dsa and returns it in a newly
allocated
DSA_SIG structure.
DSA_sign_setup(3) may be used to precompute part of the signing operation
in case signature generation is time-critical.
DSA_do_verify() verifies that the signature
sig matches a given
message digest
dgst of size
len.
dsa is the signer's
public key.
DSA_do_sign() returns the signature, NULL on error.
DSA_do_verify() returns 1 for a valid signature, 0 for an incorrect
signature and -1 on error. The error codes can be obtained by
ERR_get_error(3).
DSA_new(3),
ERR_get_error(3),
RAND_bytes(3),
DSA_SIG_new(3),
DSA_sign(3)
All of these functions were deprecated in OpenSSL 3.0.
Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy in the
file LICENSE in the source distribution or at
<
https://www.openssl.org/source/license.html>.