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Update build for OpenSSL-1.0.0b import.
[dragonfly.git] / secure / lib / libcrypto / man / DSA_dup_DH.3
... / ...
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124.\" ========================================================================
125.\"
126.IX Title "DSA_dup_DH 3"
127.TH DSA_dup_DH 3 "2010-11-16" "1.0.0b" "OpenSSL"
128.\" For nroff, turn off justification. Always turn off hyphenation; it makes
129.\" way too many mistakes in technical documents.
130.if n .ad l
131.nh
132.SH "NAME"
133DSA_dup_DH \- create a DH structure out of DSA structure
134.SH "SYNOPSIS"
135.IX Header "SYNOPSIS"
136.Vb 1
137\& #include <openssl/dsa.h>
138\&
139\& DH * DSA_dup_DH(const DSA *r);
140.Ve
141.SH "DESCRIPTION"
142.IX Header "DESCRIPTION"
143\&\fIDSA_dup_DH()\fR duplicates \s-1DSA\s0 parameters/keys as \s-1DH\s0 parameters/keys. q
144is lost during that conversion, but the resulting \s-1DH\s0 parameters
145contain its length.
146.SH "RETURN VALUE"
147.IX Header "RETURN VALUE"
148\&\fIDSA_dup_DH()\fR returns the new \fB\s-1DH\s0\fR structure, and \s-1NULL\s0 on error. The
149error codes can be obtained by \fIERR_get_error\fR\|(3).
150.SH "NOTE"
151.IX Header "NOTE"
152Be careful to avoid small subgroup attacks when using this.
153.SH "SEE ALSO"
154.IX Header "SEE ALSO"
155\&\fIdh\fR\|(3), \fIdsa\fR\|(3), \fIERR_get_error\fR\|(3)
156.SH "HISTORY"
157.IX Header "HISTORY"
158\&\fIDSA_dup_DH()\fR was added in OpenSSL 0.9.4.
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