NAME

DH_size — get Diffie-Hellman prime size

SYNOPSIS

#include <openssl/dh.h>

int
DH_size(DH *dh);

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(3).

dh and dh->p must not be NULL.

RETURN VALUES

The size in bytes.

SEE ALSO

BN_num_bytes(3), DH_generate_key(3), DH_new(3)

HISTORY

DH_size() is available in all versions of SSLeay and OpenSSL.