DSA_dup_DH.3ssl - Man Page

create a DH structure out of DSA structure


 #include <openssl/dsa.h>

 DH * DSA_dup_DH(const DSA *r);


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).


Be careful to avoid small subgroup attacks when using this.

See Also

dh(3), dsa(3), ERR_get_error(3)


DSA_dup_DH() was added in OpenSSL 0.9.4.

Referenced By

dsa.3ssl(3), DSA_get0_pqg.3ssl(3), DSA_meth_new.3ssl(3).

2020-08-01 1.0.2o OpenSSL