Java tutorial
import java.io.FileInputStream; import java.security.KeyStore; import java.security.cert.CertPath; import java.security.cert.Certificate; import java.security.cert.CertificateFactory; import java.util.Arrays; public class Main { public static void main(String[] argv) throws Exception { FileInputStream is = new FileInputStream("your.keystore"); KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType()); keystore.load(is, "my-keystore-password".toCharArray()); String alias = "myalias"; Certificate cert = keystore.getCertificate(alias); CertificateFactory certFact = CertificateFactory.getInstance("X.509"); CertPath path = certFact.generateCertPath(Arrays.asList(new Certificate[] { cert })); } }