DSA_dup_DH

Name

DSA_dup_DH -- create a DH structure out of DSA structure

Synopsis

#include  <openssl/dsa.h>
DH * DSA_dup_DH(const DSA *r);

DESCRIPTION

DSA_dup_DH() duplicates DSA parameters/keys as DH parameters/keys. q is lost during that conversion, but the resulting DH parameters contain its length.

RETURN VALUE

DSA_dup_DH() returns the new DH structure, and NULL on error. The error codes can be obtained by ERR_get_error(3).

NOTE

Be careful to avoid small subgroup attacks when using this.

HISTORY

DSA_dup_DH() was added in OpenSSL 0.9.4.