DH_size(3) | OpenSSL | DH_size(3)

# NAME

DH_size - get Diffie-Hellman prime size

# LIBRARY

libcrypto, -lcrypto

# 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

openssl_dh(3), DH_generate_key(3)

# HISTORY

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

2009-07-19 | 1.0.2k