(Android™) RIPEMD Hash a String

Demonstrates how to RIPEMD hash a string using RIPEMD-128, RIPEMD-160, RIPEMD-256, and RIPEMD-320.

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);

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

    CkCrypt2 crypt = new CkCrypt2();

    String content = "abcdefghijklmnopqrstuvwxyz";

    // The desired output is a hexidecimal string:
    crypt.put_EncodingMode("hex");

    // Set the hash algorithm:
    crypt.put_HashAlgorithm("ripemd128");

    String hashStr;
    hashStr = crypt.hashStringENC(content);

    Log.i(TAG, hashStr);

    // The output is:
    // FD2AA607F71DC8F510714922B371834E

    crypt.put_HashAlgorithm("ripemd160");
    hashStr = crypt.hashStringENC(content);
    Log.i(TAG, hashStr);

    // The output is:
    // F71C27109C692C1B56BBDCEB5B9D2865B3708DBC

    crypt.put_HashAlgorithm("ripemd256");
    hashStr = crypt.hashStringENC(content);
    Log.i(TAG, hashStr);

    // The output is:
    // 649D3034751EA216776BF9A18ACC81BC7896118A5197968782DD1FD97D8D5133

    crypt.put_HashAlgorithm("ripemd320");
    hashStr = crypt.hashStringENC(content);
    Log.i(TAG, hashStr);

    // The output is:
    // CABDB1810B92470A2093AA6BCE05952C28348CF43FF60841975166BB40ED234004B8824463E6B00

  }

  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."
  }
}