(Android™) Read JCEKS Containing Secret Keys

Demonstrates how to read a JCEKS keystore file containing symmetric secret keys (for AES, Blowfish, HMAC SHA25, ChaCha, etc.)

This example uses the jceks sample file that you may download from Sample JCEKS with Secret Keys

The file password is "filePassword". The password for each secret key contained in the JCEKS is "secret".

This example requires Chilkat v9.5.0.66 or greater.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // IMPORTANT: This example requires Chilkat v9.5.0.66 or greater.

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

    CkJavaKeyStore jceks = new CkJavaKeyStore();

    boolean success = jceks.LoadFile("filePassword","qa_data/jks/secretKeys_filePassword.jceks");
    if (success != true) {
        Log.i(TAG, jceks.lastErrorText());
        return;
        }

    String keyPassword = "secret";

    // Iterate over each secret key and get the key bytes and aliases..
    int i = 0;
    int numSecretKeys = jceks.get_NumSecretKeys();
    while (i < numSecretKeys) {

        Log.i(TAG, "---- Secret Key " + String.valueOf(i));
        Log.i(TAG, "Alias: " + jceks.getSecretKeyAlias(i));
        // Get the secret key bytes in a desired encoding (base64, hex, base64url, etc.)
        Log.i(TAG, "Key Bytes (hex): " + jceks.getSecretKey(keyPassword,i,"hex"));
        Log.i(TAG, "Key Bytes (base64): " + jceks.getSecretKey(keyPassword,i,"base64"));

        i = i + 1;
        }

    // The output:

    // ---- Secret Key 0
    // Alias: aes_key
    // Key Bytes (hex): CB3632FD12FF3256E0048C100DDE8DEF
    // Key Bytes (base64): yzYy/RL/MlbgBIwQDd6N7w==
    // ---- Secret Key 1
    // Alias: chacha_key
    // Key Bytes (hex): B37C73871C7B8F8D488DDE2F1A78CF51B6D74FFAF0E9B338B9609510A4688136
    // Key Bytes (base64): s3xzhxx7j41Ijd4vGnjPUbbXT/rw6bM4uWCVEKRogTY=
    // ---- Secret Key 2
    // Alias: hmac_sha256_key
    // Key Bytes (hex): 3C644B53F904A3BF161D3EAD1364E52EAE6C6EC8C61133B974A2484B894539C0
    // Key Bytes (base64): PGRLU/kEo78WHT6tE2TlLq5sbsjGETO5dKJIS4lFOcA=
    // ---- Secret Key 3
    // Alias: blowfish_key
    // Key Bytes (hex): FFE0574DE04B50F1E2FE79B4160B3B2183ACFF41721C46BFF9764CF24CA40E3C
    // Key Bytes (base64): /+BXTeBLUPHi/nm0Fgs7IYOs/0FyHEa/+XZM8kykDjw=

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}