DSA_dup_DH(3)               OpenSSL               DSA_dup_DH(3)





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 param-
       eters/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.

SEE ALSO
       dh(3), dsa(3), ERR_get_error(3)

HISTORY
       DSA_dup_DH() was added in OpenSSL 0.9.4.



0.9.7c                     2002-09-25             DSA_dup_DH(3)
