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.\" ========================================================================
.\"
.IX Title "DSA_dup_DH 3"
.TH DSA_dup_DH 3 "2019-12-20" "1.0.2u" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
DSA_dup_DH \- create a DH structure out of DSA structure
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/dsa.h>
\&
\& DH * DSA_dup_DH(const DSA *r);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBDSA_dup_DH()\fR duplicates \s-1DSA\s0 parameters/keys as \s-1DH\s0 parameters/keys. q
is lost during that conversion, but the resulting \s-1DH\s0 parameters
contain its length.
.SH "RETURN VALUE"
.IX Header "RETURN VALUE"
\&\fBDSA_dup_DH()\fR returns the new \fB\s-1DH\s0\fR structure, and \s-1NULL\s0 on error. The
error codes can be obtained by \fBERR_get_error\fR\|(3).
.SH "NOTE"
.IX Header "NOTE"
Be careful to avoid small subgroup attacks when using this.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBdh\fR\|(3), \fBdsa\fR\|(3), \fBERR_get_error\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
\&\fBDSA_dup_DH()\fR was added in OpenSSL 0.9.4.

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✏️ DSA_dup_DH.3ssl