=head1 NAME
-DH_size - Get Diffie-Hellman prime size
+DH_size, DH_bits - get Diffie-Hellman prime size
=head1 SYNOPSIS
- #include <openssl/dh.h>
+#include <openssl/dh.h>
- int DH_size(DH *dh);
+int DH_size(const DH *dh);
+
+int DH_bits(const DH *dh);
=head1 DESCRIPTION
-This function returns the Diffie-Hellman size in bytes. It can be used
+DH_size() returns the Diffie-Hellman prime 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>.
+DH_bits() returns the number of significant bits.
+
+B<dh> and B<dh-E<gt>p> must not be B<NULL>.
=head1 RETURN VALUE
-The size in bytes.
+The size.
=head1 SEE ALSO
-L<dh(3)|dh(3)>, L<DH_generate_key(3)|DH_generate_key(3)>
+L<dh(3)>, L<DH_generate_key(3)>,
+L<BN_num_bits(3)>
=head1 HISTORY
-DH_size() is available in all versions of SSLeay and OpenSSL.
+DH_bits() was added in OpenSSL 1.1.0.
=cut