DSA Generate Key

Generates a DSA public/private key pair and saves to PEM and DER file formats (both encrypted and non-encrypted).

An encrypted DSA PEM looks like this:

-----BEGIN DSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,9DAFD5C4CD62A5D0

QwDdp66sB0qKXQli7FbVcKL/eo3wu7kGRlV2sI8XbkNa1RTLiwnwTWDB0dqyWRQ8
...
Bx0HVfxKiNgCbL6BQEnYD+GOmMcckuj9Uhgloe/YuXCIDJBGhjUt/li3hvR/PXeC

V2xxNl1XKBE88njqi+UXt4vjGVNLpvXM
-----END DSA PRIVATE KEY-----

 Chilkat Perl Module Downloads for Windows, Linux, and MAC OS X

use chilkat();



$dsa = new chilkat::CkDsa();

$success = $dsa->UnlockComponent("Anything for 30-day trial");
if ($success != 1) {
    print $dsa->lastErrorText() . "\n";
    exit;
}

#  Call GenKey to generate a new DSA key.
#  The number of bits should be at least 1024 and a multiple
#  of 64.   Typical values are either 1024 or 2048.
#  DSA key generation is compute intensive and may take
#  a short while to complete.
$success = $dsa->GenKey(2048);
if ($success != 1) {
    print $dsa->lastErrorText() . "\n";
    exit;
}

#  Extract the private and public parts to PEM or DER format
#  and save to 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 = $dsa->SaveText($xmlStr,"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 = $dsa->SaveText($xmlStr,"dsa_priv.xml");

print "Finished!" . "\n";