Adding certificate to keystore using java code

Question

I\'m trying to establish a https connection using the server\'s .cer certificate file. I am able to manually get the certificate file using a browser and put it into the key

Answer 1

Edit: This seems to do exactly what you want.

Using the following code it is possible to add a trust store during runtime.

import java.io.InputStream;
import java.security.KeyStore;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;

public class SSLClasspathTrustStoreLoader {
    public static void setTrustStore(String trustStore, String password) throws Exception {
        TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance("X509");
        KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
        InputStream keystoreStream = SSLClasspathTrustStoreLoader.class.getResourceAsStream(trustStore);
        keystore.load(keystoreStream, password.toCharArray());
        trustManagerFactory.init(keystore);
        TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, trustManagers, null);
        SSLContext.setDefault(sc);
    }
}

I used this code to establish a secure LDAP connection with an active directory server.

This could also be usful, at the bottom there is a class, which is able to import a certificate during runtime.