Perl

Change Password for Java KeyStore File

See more Java KeyStore (JKS) Examples

Demonstrates how to load a Java keystore, change the password, and save using the new password. If the Java keystore contains only trusted root certificates, then it's simply a matter of loading the JKS with the existing password, and then saving with a new password. If the JKS contains private key entries, then each private key entry must be re-keyed using the new password by calling the ChangePassword method. Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

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

my $jks = Chilkat2::JavaKeyStore->new;

my $oldJksPassword = 'existingPassword';
my $newJksPassword = 'newPassword';
my $jksPath = '/someDir/keyStore.jks';

# Load the Java keystore from a file.
my $success = $jks->LoadFile($oldJksPassword, $jksPath);
if (!$success) {
    print $jks->LastErrorText, "\n";
    exit;
}

# If the JKS contains private key entries, then each
# must be re-keyed with the new password by calling ChangePassword.
my $numPrivateKeys = $jks->NumPrivateKeys;

my $i = 0;
while ($i < $numPrivateKeys) {
    $success = $jks->ChangePassword($i, $oldJksPassword, $newJksPassword);
    if (!$success) {
        print $jks->LastErrorText, "\n";
        exit;
    }

    $i = $i + 1;
}

# Write the JKS using the new password for the JKS file's keyed digest.
$success = $jks->ToFile($newJksPassword, $jksPath);
if (!$success) {
    print $jks->LastErrorText, "\n";
    exit;
}

print "Updated the password for the Java keystore file.\n";