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(). dh->p must not be NULL.

RETURN VALUE¶

The size in bytes.

SEE ALSO¶

dh(3), DH_generate_key(3)

HISTORY¶

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