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131 .IX Title "DSA_dup_DH 3"
132 .TH DSA_dup_DH 3 "2007-03-15" "0.9.8e" "OpenSSL"
134 DSA_dup_DH \- create a DH structure out of DSA structure
136 .IX Header "SYNOPSIS"
138 \& #include <openssl/dsa.h>
142 \& DH * DSA_dup_DH(const DSA *r);
145 .IX Header "DESCRIPTION"
146 \&\fIDSA_dup_DH()\fR duplicates \s-1DSA\s0 parameters/keys as \s-1DH\s0 parameters/keys. q
147 is lost during that conversion, but the resulting \s-1DH\s0 parameters
150 .IX Header "RETURN VALUE"
151 \&\fIDSA_dup_DH()\fR returns the new \fB\s-1DH\s0\fR structure, and \s-1NULL\s0 on error. The
152 error codes can be obtained by \fIERR_get_error\fR\|(3).
155 Be careful to avoid small subgroup attacks when using this.
157 .IX Header "SEE ALSO"
158 \&\fIdh\fR\|(3), \fIdsa\fR\|(3), \fIERR_get_error\fR\|(3)
161 \&\fIDSA_dup_DH()\fR was added in OpenSSL 0.9.4.