DSA_size, DSA_bits, DSA_security_bits - get DSA signature size, key bits or
security bits
#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):
int DSA_bits(const DSA *dsa);
int DSA_size(const DSA *dsa);
int DSA_security_bits(const DSA *dsa);
All of the functions described on this page are deprecated. Applications should
instead use
EVP_PKEY_get_bits(3),
EVP_PKEY_get_security_bits(3)
and
EVP_PKEY_get_size(3).
DSA_bits() returns the number of bits in key
dsa: this is the
number of bits in the
p parameter.
DSA_size() returns the maximum size of an ASN.1 encoded DSA signature for
key
dsa in bytes. It can be used to determine how much memory must be
allocated for a DSA signature.
DSA_security_bits() returns the number of security bits of the given
dsa key. See
BN_security_bits(3).
DSA_security_bits() returns the number of security bits in the key, or -1
if
dsa doesn't hold any key parameters.
DSA_bits() returns the number of bits in the key, or -1 if
dsa
doesn't hold any key parameters.
DSA_size() returns the signature size in bytes, or -1 if
dsa
doesn't hold any key parameters.
EVP_PKEY_get_bits(3),
EVP_PKEY_get_security_bits(3),
EVP_PKEY_get_size(3),
DSA_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>.