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Crypt::DSA::KeyChain(3pm) User Contributed Perl Documentation Crypt::DSA::KeyChain(3pm)
NAME
Crypt::DSA::KeyChain - DSA key generation system
SYNOPSIS
use Crypt::DSA::KeyChain;
my $keychain = Crypt::DSA::KeyChain->new;
my $key = $keychain->generate_params(
Size => 512,
Seed => $seed,
Verbosity => 1,
);
$keychain->generate_keys($key);
DESCRIPTION
Crypt::DSA::KeyChain is a lower-level interface to key generation than the interface in
Crypt::DSA (the keygen method). It allows you to separately generate the p, q, and g key
parameters, given an optional starting seed, and a mandatory bit size for p (q and g are
160 bits each).
You can then call generate_keys to generate the public and private portions of the key.
USAGE
$keychain = Crypt::DSA::KeyChain->new
Constructs a new Crypt::DSA::KeyChain object. At the moment this isn't particularly useful
in itself, other than being the object you need in order to call the other methods.
Returns the new object.
$key = $keychain->generate_params(%arg)
Generates a set of DSA parameters: the p, q, and g values of the key. This involves
finding primes, and as such it can be a relatively long process.
When invoked in scalar context, returns a new Crypt::DSA::Key object.
In list context, returns the new Crypt::DSA::Key object, along with: the value of the
internal counter when a suitable prime p was found; the value of h when g was derived; and
the value of the seed (a 20-byte string) when q was found. These values aren't
particularly useful in normal circumstances, but they could be useful.
%arg can contain:
o Size
The size in bits of the p value to generate. The q and g values are always 160 bits
each.
This argument is mandatory.
o Seed
A seed with which q generation will begin. If this seed does not lead to a suitable
prime, it will be discarded, and a new random seed chosen in its place, until a
suitable prime can be found.
This is entirely optional, and if not provided a random seed will be generated
automatically.
o Verbosity
Should be either 0 or 1. A value of 1 will give you a progress meter during p and q
generation--this can be useful, since the process can be relatively long.
The default is 0.
$keychain->generate_keys($key)
Generates the public and private portions of the key $key, a Crypt::DSA::Key object.
AUTHOR & COPYRIGHT
Please see the Crypt::DSA manpage for author, copyright, and license information.
perl v5.20.2 2015-10-24 Crypt::DSA::KeyChain(3pm)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2025-01-28 10:06 @3.147.77.51 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)