Add dhparam sanity check and update DH_check documentation

[openssl.git] / doc / apps / dhparam.pod

diff --git a/doc/apps/dhparam.pod b/doc/apps/dhparam.pod
index 3557deed814d21c1364688f8f868debb6f8f5c4d..addd88a540806dca31c445fdf9dbb2e1c22fe862 100644 (file)
--- a/doc/apps/dhparam.pod
+++ b/doc/apps/dhparam.pod
@@ -44,7 +44,7 @@ additional header and footer lines.
 
 =item B<-outform DER|PEM>
 
-This specifies the output format, the options have the same meaning as the 
+This specifies the output format, the options have the same meaning as the
 B<-inform> option.
 
 =item B<-in> I<filename>
@@ -72,7 +72,8 @@ avoid small-subgroup attacks that may be possible otherwise.
 
 =item B<-check>
 
-check if the parameters are valid primes and generator.
+Performs numerous checks to see if the supplied parameters are valid and
+displays a warning if not.
 
 =item B<-2>, B<-5>
 
@@ -123,7 +124,7 @@ for all available algorithms.
 
 The program B<dhparam> combines the functionality of the programs B<dh> and
 B<gendh> in previous versions of OpenSSL. The B<dh> and B<gendh>
-programs are retained for now but may have different purposes in future 
+programs are retained for now but may have different purposes in future
 versions of OpenSSL.
 
 =head1 NOTES
@@ -146,4 +147,13 @@ There should be a way to generate and manipulate DH keys.
 
 L<dsaparam(1)>
 
+=head1 COPYRIGHT
+
+Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the OpenSSL license (the "License").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
 =cut