Crypt::DSA::Key::PEM(3pm) User Contributed Perl Documentation Crypt::DSA::Key::PEM(3pm)NAME
Crypt::DSA::Key::PEM - Read/write DSA PEM files
SYNOPSIS
use Crypt::DSA::Key;
my $key = Crypt::DSA::Key->new( Type => 'PEM', ...);
$key->write( Type => 'PEM', ...);
DESCRIPTION
Crypt::DSA::Key::PEM provides an interface to reading and writing DSA PEM files, using Convert::PEM. The files are ASN.1-encoded and
optionally encrypted.
You shouldn't use this module directly. As the SYNOPSIS above suggests, this module should be considered a plugin for Crypt::DSA::Key, and
all access to PEM files (reading DSA keys from disk, etc.) should be done through that module.
Read the Crypt::DSA::Key documentation for more details.
AUTHOR & COPYRIGHTS
Please see the Crypt::DSA manpage for author, copyright, and license information.
perl v5.12.4 2011-06-17 Crypt::DSA::Key::PEM(3pm)
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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 v5.12.4 2011-10-05 Crypt::DSA::KeyChain(3pm)
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