openssl1.0/doc/crypto/DH_size.pod
2019-08-09 10:00:55 +02:00

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=pod
=head1 NAME
DH_size - get Diffie-Hellman prime size
=head1 SYNOPSIS
#include <openssl/dh.h>
int DH_size(DH *dh);
=head1 DESCRIPTION
This function returns the Diffie-Hellman size in bytes. It can be used
to determine how much memory must be allocated for the shared secret
computed by DH_compute_key().
B<dh-E<gt>p> must not be B<NULL>.
=head1 RETURN VALUE
The size in bytes.
=head1 SEE ALSO
L<dh(3)|dh(3)>, L<DH_generate_key(3)|DH_generate_key(3)>
=head1 HISTORY
DH_size() is available in all versions of SSLeay and OpenSSL.
=cut