(Android™) MD5 Hash a String (such as a password string)

Demonstrates how to MD5 hash a string to get MD5 hash in hex encoded string representation. (The MD5 hash is 16 bytes, and therefore a hex encoded MD5 hash would be 32 chars.)

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);

    String password = "myPassword";

    CkCrypt2 crypt = new CkCrypt2();
    crypt.put_HashAlgorithm("md5");
    crypt.put_EncodingMode("hex");
    String md5Hex = crypt.hashStringENC(password);
    Log.i(TAG, "MD5 hash (as a hex string) = " + md5Hex);

    // The hex string will be uppercase.  Your application
    // can easily convert it to lowercase if desired via non-Chilkat means.

  }

  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."
  }
}