Name

DSA_dup_DH — creates a DH structure out of DSA structure

Library

libcrypto

Synopsis

#include <openssl/dsa.h>

DH * DSA_dup_DH(const DSA *r);

Detailed 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().

Notes

Be careful to avoid small subgroup attacks when using this.

See Also

dh(), dsa(), ERR_get_error()

History

DSA_dup_DH() was added in OpenSSL 0.9.4.

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