NAME    [Toc]    [Back]

       DSA_dup_DH - create a DH structure out of DSA structure

LIBRARY    [Toc]    [Back]

       libcrypto, -lcrypto

SYNOPSIS    [Toc]    [Back]

        #include <openssl/dsa.h>

        DH * DSA_dup_DH(DSA *r);

DESCRIPTION    [Toc]    [Back]

       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    [Toc]    [Back]

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

NOTE    [Toc]    [Back]

       Be careful to avoid small subgroup attacks when using
       this.

SEE ALSO    [Toc]    [Back]

       openssl_dh(3), openssl_dsa(3), openssl_err(3)

HISTORY    [Toc]    [Back]

       DSA_dup_DH() was added in OpenSSL 0.9.4.



2000-07-22                    0.9.6g                DSA_dup_DH(3)