Perl

Generate new DSA Key from OpenSSL Parameters File

See more DSA Examples

Generates a new DSA key from an OpenSSL-created parameters file (DER and PEM formats supported). Examples of using OpenSSL to create parameter files are shown here:

openssl dsaparam -outform DER 1024 <  seedData.txt >dsaparam.der

openssl dsaparam 1024 < seedData.txt >dsaparam.pem

Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

my $dsa = Chilkat2::Dsa->new;

my $success = $dsa->GenKeyFromParamsDerFile('dsaparam.der');
if (!$success) {
    print $dsa->LastErrorText, "\n";
    exit;
}

# To generate a key from PEM, call GenKeyFromParamsPem
# (for an in-memory PEM string) or GenKeyFromParamsFilePem
# for a PEM file.

# The public and private keys may now be exported to PEM, DER,
# and XML formatted files.

# First for the public key...
# The public key never needs to be encrypted.

# Save the public key in PEM format:
my $pemStr = $dsa->ToPublicPem();
# This example will not check the return value of SaveText...
$success = $dsa->SaveText($pemStr, 'dsa_pub.pem');

# Save the public key in DER format:
$success = $dsa->ToPublicDerFile('dsa_pub.der');

my $bPublicOnly = 1;
# Save to XML
my $xmlStr = $dsa->ToXml($bPublicOnly);
$success = $dsa->SaveText($pemStr, 'dsa_pub.xml');

# ------------------------------------
# Now for the private key....
# ------------------------------------

# Unencrypted PEM:
$pemStr = $dsa->ToPem();
$success = $dsa->SaveText($pemStr, 'dsa_priv.pem');

# Encrypted PEM:
$pemStr = $dsa->ToEncryptedPem('myPassword');
$success = $dsa->SaveText($pemStr, 'dsa_privEncrypted.pem');

# DER:
$success = $dsa->ToDerFile('dsa_priv.der');

# XML:
$bPublicOnly = 0;
$xmlStr = $dsa->ToXml($bPublicOnly);
$success = $dsa->SaveText($pemStr, 'dsa_priv.xml');

print "Finished!\n";