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[dragonfly.git] / secure / lib / libcrypto / man / DSA_dup_DH.3
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2''' $RCSfile$$Revision$$Date$
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42.ds -- \(*W-
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80.\" If the F register is turned on, we'll generate
81.\" index entries out stderr for the following things:
82.\" TH Title
83.\" SH Header
84.\" Sh Subsection
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96.TH DSA_dup_DH 3 "0.9.7d" "2/Sep/2004" "OpenSSL"
97.UC
98.if n .hy 0
984263bc 99.if n .na
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188.\}
189.rm #[ #] #H #V #F C
984263bc 190.SH "NAME"
74dab6c2 191DSA_dup_DH \- create a DH structure out of DSA structure
984263bc 192.SH "SYNOPSIS"
74dab6c2 193.PP
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194.Vb 1
195\& #include <openssl/dsa.h>
196.Ve
197.Vb 1
198\& DH * DSA_dup_DH(const DSA *r);
199.Ve
200.SH "DESCRIPTION"
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201\fIDSA_dup_DH()\fR duplicates DSA parameters/keys as DH parameters/keys. q
202is lost during that conversion, but the resulting DH parameters
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203contain its length.
204.SH "RETURN VALUE"
74dab6c2 205\fIDSA_dup_DH()\fR returns the new \fBDH\fR structure, and NULL on error. The
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206error codes can be obtained by ERR_get_error(3).
207.SH "NOTE"
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208Be careful to avoid small subgroup attacks when using this.
209.SH "SEE ALSO"
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210dh(3), dsa(3), ERR_get_error(3)
211.SH "HISTORY"
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212\fIDSA_dup_DH()\fR was added in OpenSSL 0.9.4.
213
214.rn }` ''
215.IX Title "DSA_dup_DH 3"
216.IX Name "DSA_dup_DH - create a DH structure out of DSA structure"
217
218.IX Header "NAME"
219
220.IX Header "SYNOPSIS"
221
222.IX Header "DESCRIPTION"
223
224.IX Header "RETURN VALUE"
225
226.IX Header "NOTE"
227
228.IX Header "SEE ALSO"
229
984263bc 230.IX Header "HISTORY"
74dab6c2 231