Decrypt a JWE with a Private Key

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPrivateKey, which sets the private key used to decrypt a recipient of a loaded JWE.

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();

    //  Load the JWE compact serialization to be decrypted.
    String jweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>";
    success = jwe.LoadJwe(jweCompact);
    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 private key.
    CkPrivateKey privKey = new CkPrivateKey();
    success = privKey.LoadPemFile("qa_data/recipient_privkey.pem");
    if (success == false) {
        System.out.println(privKey.lastErrorText());
        return;
        }

    //  Set the private key used to decrypt recipient 0.
    success = jwe.SetPrivateKey(0,privKey);
    if (success == false) {
        System.out.println(jwe.lastErrorText());
        return;
        }

    String content = jwe.decrypt(0,"utf-8");
    if (jwe.get_LastMethodSuccess() == false) {
        System.out.println(jwe.lastErrorText());
        return;
        }

    System.out.println(content);
  }
}