Encrypt a JWE with a Recipient Public Key

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPublicKey, which sets the public key used to encrypt for a recipient. The example uses RSA-OAEP-256 key management with AES-256-GCM content encryption.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

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;

    CkJwe jwe = new CkJwe();

    //  Protected header: RSA-OAEP-256 key management with AES-256-GCM content encryption.
    CkJsonObject header = new CkJsonObject();
    header.UpdateString("alg","RSA-OAEP-256");
    header.UpdateString("enc","A256GCM");
    success = jwe.SetProtectedHeader(header);
    if (success == false) {
        System.out.println(jwe.lastErrorText());
        return;
        }

    //  The file path is relative to the application's current working directory.  An absolute path
    //  may also be used.  Supply the path appropriate to your own environment.
    //  Load the recipient's public key.
    CkPublicKey pubKey = new CkPublicKey();
    success = pubKey.LoadFromFile("qa_data/recipient_pubkey.pem");
    if (success == false) {
        System.out.println(pubKey.lastErrorText());
        return;
        }

    //  Set the public key used to encrypt for recipient 0.
    success = jwe.SetPublicKey(0,pubKey);
    if (success == false) {
        System.out.println(jwe.lastErrorText());
        return;
        }

    String jweCompact = jwe.encrypt("This is the secret content.","utf-8");
    if (jwe.get_LastMethodSuccess() == false) {
        System.out.println(jwe.lastErrorText());
        return;
        }

    System.out.println(jweCompact);
  }
}