5 DSA_size, DSA_bits, DSA_security_bits - get DSA signature size, key bits or security bits
9 #include <openssl/dsa.h>
11 int DSA_bits(const DSA *dsa);
13 Deprecated since OpenSSL 3.0, can be hidden entirely by defining
14 B<OPENSSL_API_COMPAT> with a suitable version value, see
15 L<openssl_user_macros(7)>:
17 int DSA_size(const DSA *dsa);
19 int DSA_security_bits(const DSA *dsa);
23 DSA_bits() returns the number of bits in key B<dsa>: this is the number
24 of bits in the B<p> parameter.
26 The remaining functions described on this page are deprecated.
27 Applications should instead use L<EVP_PKEY_security_bits(3)> and
30 DSA_size() returns the maximum size of an ASN.1 encoded DSA signature
31 for key B<dsa> in bytes. It can be used to determine how much memory must
32 be allocated for a DSA signature.
34 B<dsa-E<gt>q> must not be B<NULL>.
36 DSA_security_bits() returns the number of security bits of the given B<dsa>
37 key. See L<BN_security_bits(3)>.
41 DSA_bits() returns the number of bits in the key.
43 DSA_size() returns the signature size in bytes.
48 L<EVP_PKEY_security_bits(3)>,
50 L<DSA_new(3)>, L<DSA_sign(3)>
54 The DSA_size() and DSA_security_bits() functions were deprecated in OpenSSL 3.0.
58 Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
60 Licensed under the Apache License 2.0 (the "License"). You may not use
61 this file except in compliance with the License. You can obtain a copy
62 in the file LICENSE in the source distribution or at
63 L<https://www.openssl.org/source/license.html>.