Perl

Convert Java KeyStore to PEM

See more Java KeyStore (JKS) Examples

Loads a Java keystore file and saves the trusted certificate entries to a PEM file. Perl

use chilkat();

$success = 0;

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

$jks = chilkat::CkJavaKeyStore->new();

$jksPassword = "myJksPassword";

# Load the Java keystore from a file.  The JKS file password is used
# to verify the keyed digest that is found at the very end of the keystore.
# It verifies that the keystore has not been modified.
$success = $jks->LoadFile($jksPassword,"/someDir/keyStore.jks");
if ($success == 0) {
    print $jks->lastErrorText() . "\r\n";
    exit;
}

# Open/create the output PEM file. 
# This example uses Chilkat's file access class for writing the output file.
# You may replace the file I/O lines of code with whatever is most convenient for you.
$fac = chilkat::CkFileAccess->new();
$success = $fac->OpenForWrite("/pemFiles/caCerts.pem");
if ($success == 0) {
    print $fac->lastErrorText() . "\r\n";
    exit;
}

$numCerts = $jks->get_NumTrustedCerts();

$cert = chilkat::CkCert->new();

# Iterate over the trusted certs, get the PEM for each,
# and append it to the output file.
$i = 0;
while ($i < $numCerts) {
    $jks->TrustedCertAt($i,$cert);

    # Get the certificate in PEM format.  
    $pem = $cert->exportCertPem();

    # Append the PEM string to the open file.
    $success = $fac->AppendText($pem,"utf-8");
    if ($success != 1) {
        print $fac->lastErrorText() . "\r\n";
        exit;
    }

    $i = $i + 1;
}

# Close the output file.
$fac->FileClose();

print "Trusted certificates saved to PEM." . "\r\n";