DSA_SIZE - Online Linux Manual PageSection : 3ossl
Updated : 2022-03-15
Source : 3.0.2
Note : OpenSSL
NAMEDSA_size, DSA_bits, DSA_security_bits − get DSA signature size, key bits or security bits
SYNOPSIS #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);
DESCRIPTIONAll 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).
RETURN VALUESDSA_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.
SEE ALSOEVP_PKEY_get_bits (3), EVP_PKEY_get_security_bits (3), EVP_PKEY_get_size (3), DSA_new (3), DSA_sign (3)
HISTORYAll of these functions were deprecated in OpenSSL 3.0.
COPYRIGHTCopyright 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>. 0
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