DSA_dup_DH(3) - NetBSD Manual Pages

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DSA_dup_DH(3)                       OpenSSL                      DSA_dup_DH(3)




NAME

       DSA_dup_DH - create a DH structure out of DSA structure


LIBRARY

       libcrypto, -lcrypto


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.


SEE ALSO

       openssl_dh(3), openssl_dsa(3), ERR_get_error(3)


HISTORY

       DSA_dup_DH() was added in OpenSSL 0.9.4.



1.0.1p                            2009-07-19                     DSA_dup_DH(3)