(Android™) Generate Salt in Hex or Base64 Format

Demonstrates how to generate a cryptographic salt value and get the result as hex or base64.

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);

    // In cryptography, a salt is random data that is used as an additional input to a one-way function that "hashes" data, a password or passphrase.

    // Let's say we want to generate a 16-byte salt value..
    CkPrng prng = new CkPrng();

    String saltHex = prng.genRandom(16,"hex");
    Log.i(TAG, "16-byte salt as hex: " + saltHex);

    String saltBase64 = prng.genRandom(16,"base64");
    Log.i(TAG, "16-byte salt as base64: " + saltBase64);

  }

  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."
  }
}