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

Perl

use chilkat();

$success = 0;

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

$dsa = chilkat::CkDsa->new();

$success = $dsa->GenKeyFromParamsDerFile("dsaparam.der");
if ($success != 1) {
    print $dsa->lastErrorText() . "\r\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:
$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");

$bPublicOnly = 1;
# Save to XML
$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!" . "\r\n";