Java

Get RSA Private Key in JWK Format (JSON Web Key)

See more JSON Web Signatures (JWS) Examples

Demonstrates how to get an RSA private key in JWK (JSON Web Key) format.

Note: This example requires Chilkat v9.5.0.66 or later.

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;

    // Note: This example requires Chilkat v9.5.0.66 or later.

    // Load a PEM file into memory.
    CkStringBuilder sbPem = new CkStringBuilder();
    success = sbPem.LoadFile("qa_data/pem/rsa_passwd.pem","utf-8");
    if (success != true) {
        System.out.println("Failed to load PEM file.");
        return;
        }

    // Load the PEM into a private key object.
    CkPrivateKey privKey = new CkPrivateKey();
    success = privKey.LoadEncryptedPem(sbPem.getAsString(),"passwd");
    if (success != true) {
        System.out.println(privKey.lastErrorText());
        return;
        }

    // Get the private key in JWK format:
    String jwk = privKey.getJwk();

    // The GetJwk method will return the JWK in the most compact JSON format possible,
    // as a single line with no extra whitespace.  To get a more human-readable JWK (for this example),
    // load into a Chilkat JSON object and emit non-compact:

    CkJsonObject json = new CkJsonObject();
    json.Load(jwk);
    json.put_EmitCompact(false);
    System.out.println("RSA Private Key in JWK format:");
    System.out.println(json.emit());

    // Sample output:
    // { 
    //   "kty": "RSA",
    //   "n": "33TqqLR3eeUmDtHS89qF3p4MP7Wfqt2Zjj3lZjLjjCGDvwr9cJNlNDiuKboODgUiT4ZdPWbOiMAfDcDzlOxA04DDnEFGAf-kDQiNSe2ZtqC7bnIc8-KSG_qOGQIVaay4Ucr6ovDkykO5Hxn7OU7sJp9TP9H0JH8zMQA6YzijYH9LsupTerrY3U6zyihVEDXXOv08vBHk50BMFJbE9iwFwnxCsU5-UZUZYw87Uu0n4LPFS9BT8tUIvAfnRXIEWCha3KbFWmdZQZlyrFw0buUEf0YN3_Q0auBkdbDR_ES2PbgKTJdkjc_rEeM0TxvOUf7HuUNOhrtAVEN1D5uuxE1WSw",
    //   "e": "AQAB",
    //   "d": "DjU54mYvHpICXHjc5-JiFqiH8NkUgOG8LL4kwt3DeBp9bP0-5hSJH8vmzwJkeGG9L79EWG4b_bfxgYdeNX7cFFagmWPRFrlxbd64VRYFawZHRJt-2cbzMVI6DL8EK4bu5Ux5qTiV44Jw19hoD9nDzCTfPzSTSGrKD3iLPdnREYaIGDVxcjBv3Tx6rrv3Z2lhHHKhEHb0RRjATcjAVKV9NZhMajJ4l9pqJ3A4IQrCBl95ux6Xm1oXP0i6aR78cjchsCpcMXdP3WMsvHgTlsZT0RZLFHrvkiNHlPiil4G2_eHkwvT__CrcbO6SmI_zCtMmypuHJqcr-Xb7GPJoa64WoQ",
    //   "p": "8K33pX90XX6PZGiv26wZm7tfvqlqWFT03nUMvOAytqdxhO2HysiPn4W58OaJd1tY4372Qpiv6enmUeI4MidCie-s-d0_B6A0xfhU5EeeaDN0xDOOl8yN-kaaVj9b4HDR3c91OAwKpDJQIeJVZtxoijxl-SRx3u7Vs_7meeSpOfE",
    //   "q": "7a5KnUs1pTo72A-JquJvIz4Eu794Yh3ftTk_Et-83aE_FVc6Nk-EhfnwYSNpVmM6UKdrAoy5gsCvZPxrq-eR9pEwU8M5UOlki03vWY_nqDBpJSIqwPvGHUB16zvggsPQUyQBfnN3N8XlDi12n88ltvWwEhn1LQOwMUALEfka9_s",
    //   "dp": "DB9nGuHplY_7Xv5a5UCs5YgxkWPtJFfbIZ1Zr-XHCCY09JIWReOGQG226OhjwixKtOK_OqmAKtMKM9OmKviJRHNbDhbTxumN3u7cL8dftjXpSryiEQlPmWyW94MneI2WNIrvh4wruQuDt8EztgOiDFxwcnUgey8iend7WmZnE7E",
    //   "dq": "O-bSTUQ4N_UuQezgkF3TDrnBraO67leDGwRbfiE_U0ghQvqh5DA0QSPVzlWDZc9KUitvj8vxsR9o1PW9GS0an17GJEYuetLnkShKK3NWOhBBX6d1yP9rVdH6JhgIJEy_g0Suz7TAFiFc8i7JF8u4QJ05C8bZAMhOLotqftQeVOM",
    //   "qi": "InfGmkb2jNkPGuNiZ-mU0-ZrOgLza_fLL9ErZ35jUPhGFzdGxJNobklvsNoTd-E2GAU41YkJh24bncMLvJVYxHHA5iF7FBWx1SvpEyKVhhnIcuXGD7N5PbNZzEdmr9C6I7cPVkWO-sUV7zfFukexIcANmsd_oBBGKRoYzP5Tti4"
    // } 
  }
}