=pod =head1 NAME DH_size, DH_bits, DH_security_bits - get Diffie-Hellman prime size and security bits =head1 SYNOPSIS #include int DH_size(const DH *dh); int DH_bits(const DH *dh); int DH_security_bits(const DH *dh); =head1 DESCRIPTION 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 L. DH_bits() returns the number of significant bits. B and Bp> must not be B. DH_security_bits() returns the number of security bits of the given B key. See L. =head1 RETURN VALUE DH_size() returns the prime size of Diffie-Hellman in bytes. DH_bits() returns the number of bits in the key. DH_security_bits() returns the number of security bits. =head1 SEE ALSO L, L, L =head1 HISTORY DH_bits() was added in OpenSSL 1.1.0. =head1 COPYRIGHT Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (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 L. =cut