NAME
DSA_size, DSA_bits
— get DSA signature or key
size
SYNOPSIS
#include
<openssl/dsa.h>
int
DSA_size(const DSA *dsa);
int
DSA_bits(const DSA *dsa);
DESCRIPTION
DSA_size()
returns the maximum size of an ASN.1 encoded DSA signature for the key
dsa in bytes. It can be used to determine how much
memory must be allocated for a DSA signature.
dsa->q must not be
NULL.
DSA_bits()
returns the number of significant bits in the public domain parameter
p contained in dsa. This is also
the number of bits in the public key.
RETURN VALUES
DSA_size() returns the size of the
signature in bytes.
DSA_bits() returns the size of the public
key in bits.
SEE ALSO
DSA_get0_pqg(3), DSA_new(3), DSA_security_bits(3), DSA_sign(3)
HISTORY
DSA_size() first appeared in SSLeay 0.6.0
and has been available since OpenBSD 2.4.
DSA_bits() first appeared in OpenSSL 1.1.0
and has been available since OpenBSD 7.1.