Java Requires Chilkat v11.0.0+

Load Java KeyStore and Access Contents

See more Java KeyStore (JKS) Examples

Loads a Java keystore file and iterates over the contents. A Java keystore (.jks) file can contain one or more trusted root certificate entries and/or one or more private key entries. Each private key entry includes an associated certificate chain. Chilkat2 Java

import com.chilkatsoft.chilkat2.Cert;
import com.chilkatsoft.chilkat2.CertChain;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JavaKeyStore;
import com.chilkatsoft.chilkat2.PrivateKey;

public class ChilkatExample {

    public static void main(String[] args) {
        // This requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        JavaKeyStore jks = new JavaKeyStore();

        // 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 there has been no tampering with the file.
        try {
            jks.loadFile("jksFilePassword", "/someDir/keyStore.jks");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Find out how many of each type of entry:
        int numTrustedCerts = jks.getNumTrustedCerts();
        int numPrivateKeys = jks.getNumPrivateKeys();

        Cert cert = new Cert();

        // For each trusted certificate, access it by getting
        // it as a cert object.  Also get the alias associated with the certificate.
        System.out.println("Trusted Certs:");
        int i = 0;
        while (i < numTrustedCerts) {
            jks.trustedCertAt(i, cert);
            System.out.println(jks.getTrustedCertAlias(i) + ": " + cert.getSubjectDN());
            i = i + 1;
        }

        PrivateKey privKey = new PrivateKey();
        CertChain certChain = new CertChain();

        // For each private key entry, get the private key and
        // the associated certificate chain.
        // Each private key is password protected.  Usually it is the same
        // password as used for the keyed digest of the entire JKS.
        // However, this does not have to be.  The password is passed
        // here to handle the possibility of each private key requiring
        // a different password.
        System.out.println("Private Keys:");
        i = 0;
        while (i < numPrivateKeys) {
            jks.privateKeyAt("jksFilePassword", i, privKey);
            System.out.println(jks.getPrivateKeyAlias(i));
            jks.certChainAt(i, certChain);

            // The 1st certificate in the chain is the one associated with the private key.
            certChain.certAt(0, cert);
            System.out.println(cert.getSubjectDN());

            i = i + 1;
        }
    }
}