Crypt::DSA::KeyChain(3User Contributed Perl DocumentatiCrypt::DSA::KeyChain(3)NAMECrypt::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);
DESCRIPTIONCrypt::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:
· 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.
· 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.
· 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 v5.14.1 2011-06-17 Crypt::DSA::KeyChain(3)
