DH_size.3ssl man page

DH_size ā€” get Diffie-Hellman prime size


 #include <openssl/dh.h>

 int DH_size(DH *dh);


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)


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

Referenced By

BN_num_bytes.3ssl(3), DH_generate_key.3ssl(3), DH_get0_pqg.3ssl(3), DH_meth_new.3ssl(3).

2018-03-27 1.0.2o OpenSSL