Java

Generate RSA Public/Private Key

See more RSA Examples

_LANGUAGE_ example code showing how to generate an RSA public/private key. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkRsa rsa = new CkRsa();

    // Generate a 2048-bit key.  Chilkat RSA supports
    // key sizes ranging from 512 bits to 8192 bits.
    CkPrivateKey privKey = new CkPrivateKey();
    success = rsa.GenKey(2048,privKey);
    if (success == false) {
        System.out.println(rsa.lastErrorText());
        return;
        }

    CkPublicKey pubKey = new CkPublicKey();
    privKey.ToPublicKey(pubKey);

    System.out.println(privKey.getPkcs8Pem());

    System.out.println(pubKey.getPem(false));

    // Sample output:

    // -----BEGIN PRIVATE KEY-----
    // MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQD0SwWmX222gCpW
    // ue75Q3VicOSXlTW0YNVksW8oGLS8x/SI5ZUqVMLIl2gsF1drEg2b+lvfeB7l2hwo
    // UUCK0x2L2qv8hs4zrHmrrCi5xHHG7kpQAoi2PTodWvKvr9m7+n+nFcwOMrY0+qZM
    // oYUg85yde3tWek5ouj4v1ZC9lbsozTrl2aIm/nD+o1PXg/V7CL2owbS+UG0iRz0C
    // IYwn8hNEEe3/Uzw2oq7Gt37jOTYB21jX9RSgt0v90ifaQeXR6uiuuaJLRVunJXrd
    // lJ9QvJh8xYuyEhJO5cChtn2AcSSxm417O4vJzBSHKKAn+EA/YIs74UsYTZojG5x/
    // ptA3GDzhAgMBAAECggEBAIC4Vw3HEqQq/CQebJDivqNUIN7OPDIDI+2eoJdcDT+7
    // jFnlvqdDai8PuFAjLGi6ZnldfbNOM9mhB10nEv8TJmpemmjBDz2jD6kpWXwoylqr
    // jHSEIU0FDe4R0fZIjk3CPCjqD08b4W4g9CdEpEUsl8VTHzX90/rSx5mkylNa5fck
    // xOf7V4W3L0OC+J0zKFiAQtI1abf+7x5rsnoi8sJ90v4wWWaXtMxHAZRLZxY2FtV3
    // BbydbTqU+UC8T2+4ga+J549k9QomZ8zUhxe22jTBcKcIE+cGK5CLN8fJJ1GZWiB9
    // JYOmeTat7N6SrpqdTsjqF2+Y6s5lt+B1yI6Fg2069MECgYEA/VYd3xZgqEjM1095
    // zEce1eNujk+QGRfQv/9ToF8/jdJAvJQStagupIAHH0+iLnQGIZKLS0AxTJqlz0be
    // r+0+8bs2whiuCvNF6U/pfslMUdlkOlY38lhdL3IqVOcf4douGEPI1BJlJraJFxea
    // 49SeWJLY23Yb1j3yvCWTmBP6q8UCgYEA9tyQcRCRDis4V7NGwvWi8v3BBHf/lgo0
    // ac+676DWqHco4cbu1ZVkyM5Y3rgsgX5APeqPhaXlivvv8LLhUSydUoquhdHlBeRi
    // XxTBj4aNNRwBfC9x9keOaBBBhughwgrDcEnGL6/B/6mpXydY0El7DmGf1G5x46NY
    // jUoqVa54Um0CgYAI8eN4HwgmqPtiltHMHq6+Cpu6tqB14ltijBdd0D8kOMpEXk4S
    // z+9lq4eU2XD2hu44fT4h2BBljghQu0XdnFjenCegztJGXLSZOlMaQO1K7owVaznq
    // eqg/pp5MBSUhCl0aSjprEoMzzLomcJTtenJk2jqB9TeiZumNLx54/iuZqQKBgDjp
    // bq9yV07B7hJh9W1a/f8xOz+Rfq4TmjPOvVUjanmaRyWOHF/HOl4FHH30TeZoudzM
    // Z9wy+/GH1bBTPRjexUJTUJrvYfJyza8H9Pvm1EUrOLhto8NYid856DF28Nlwa9BG
    // Ydd6mKodbjvOsW4LksAlB5kNAVquvOqN76ajO4AdAoGBAMXWdg9VFObBklLTRs81
    // LgtLd9brWpRUHYkH8Ctw2bgyHuel26HVghWWy7JxU308uWL6ZrSXv7Qlsw7iYYwP
    // m8BwjxUTfwTpqHfIi5sjeL6IeNiUPesqyT4B7J7ssmzYf8bedwN7TsrrY+169Ud3
    // tC1UNW1BQbHh4RnyusT93Z71
    // -----END PRIVATE KEY-----
    // 
    // -----BEGIN PUBLIC KEY-----
    // MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9EsFpl9ttoAqVrnu+UN1
    // YnDkl5U1tGDVZLFvKBi0vMf0iOWVKlTCyJdoLBdXaxINm/pb33ge5docKFFAitMd
    // i9qr/IbOM6x5q6woucRxxu5KUAKItj06HVryr6/Zu/p/pxXMDjK2NPqmTKGFIPOc
    // nXt7VnpOaLo+L9WQvZW7KM065dmiJv5w/qNT14P1ewi9qMG0vlBtIkc9AiGMJ/IT
    // RBHt/1M8NqKuxrd+4zk2AdtY1/UUoLdL/dIn2kHl0erorrmiS0VbpyV63ZSfULyY
    // fMWLshISTuXAobZ9gHEksZuNezuLycwUhyigJ/hAP2CLO+FLGE2aIxucf6bQNxg8
    // 4QIDAQAB
    // -----END PUBLIC KEY-----
  }
}