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dhparam: fix documentation

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The default bitlength is now 2048. Also clarify that either the number
of bits or the generator must be present:

$ openssl dhparam -2
and
$ openssl dhparam 2048
generate parameters but
$ openssl dhparam
does not.

Reviewed-by: Matt Caswell <matt@openssl.org>
This commit is contained in:
Emilia Kasper 2015-05-13 12:05:41 +02:00
parent 8568170d77
commit 3372aeed2c
1 changed files with 8 additions and 5 deletions
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13
doc/apps/dhparam.pod
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@ -71,8 +71,10 @@ check if the parameters are valid primes and generator.
=item B<-2>, B<-5> =item B<-2>, B<-5>
The generator to use, either 2 or 5. 2 is the default. If present then the The generator to use, either 2 or 5. If present then the
input file is ignored and parameters are generated instead. input file is ignored and parameters are generated instead. If not
present but B<numbits> is present, parameters are generated with the
default generator 2.
=item B<-rand> I<file(s)> =item B<-rand> I<file(s)>
@ -85,9 +87,10 @@ all others.
=item I<numbits> =item I<numbits>
this option specifies that a parameter set should be generated of size this option specifies that a parameter set should be generated of size
I<numbits>. It must be the last option. If not present then a value of 512 I<numbits>. It must be the last option. If this option is present then
is used. If this option is present then the input file is ignored and the input file is ignored and parameters are generated instead. If
parameters are generated instead. this option is not present but a generator (B<-2> or B<-5>) is
present, parameters are generated with a default length of 2048 bits.
=item B<-noout> =item B<-noout>