NAME

       DSA_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);

DESCRIPTION

       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).

RETURN VALUES

       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.

SEE ALSO

       EVP_PKEY_get_bits(3), EVP_PKEY_get_security_bits(3), EVP_PKEY_get_size(3), DSA_new(3),
       DSA_sign(3)

HISTORY

       All of these functions were deprecated in OpenSSL 3.0.

COPYRIGHT

       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>.