Android™

Load an SSH Key from a File (Many Formats Supported)

Demonstrates how to load an SSH public or private key object from a file. The file can be in any of the following formats:

• OpenSSH private key
• OpenSSH public key
• PuTTY private key
• RFC 4716 public key

Android™

// 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);

    boolean success = false;

    CkSshKey sshkey = new CkSshKey();

    //  First, use the LoadText convenience method to load a text file (of any SSH key format)
    //  into a string:
    String strKey = sshkey.loadText("../mySshKeys/myKey.txt");

    //  Next, load the key into the SSH key object.

    //  If the key is an OpenSSH private key:
    //  (In actuality, the From* methods will automatically detect the format and load
    //  the key correctly.  For example, if a PuTTY private key is passed to FromOpenSshPrivateKey,
    //  it  will still load correctly.)
    success = sshkey.FromOpenSshPrivateKey(strKey);
    if (success != true) {
        Log.i(TAG, sshkey.lastErrorText());
        }
    else {
        Log.i(TAG, "Loaded OpenSSH private key.");
        return;
        }

    //  If the key is an OpenSSH public key:
    success = sshkey.FromOpenSshPublicKey(strKey);
    if (success != true) {
        Log.i(TAG, sshkey.lastErrorText());
        }
    else {
        Log.i(TAG, "Loaded OpenSSH public key.");
        return;
        }

    //  If the key is a PuTTY private key:
    success = sshkey.FromPuttyPrivateKey(strKey);
    if (success != true) {
        Log.i(TAG, sshkey.lastErrorText());
        }
    else {
        Log.i(TAG, "Loaded PuTTY private key.");
        return;
        }

    //  If the key is an RFC 4716 public key:
    success = sshkey.FromRfc4716PublicKey(strKey);
    if (success != true) {
        Log.i(TAG, sshkey.lastErrorText());
        }
    else {
        Log.i(TAG, "Loaded RFC 4716 public key.");
        }


  }

  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."
  }
}