Android™
Android™
SFTP Authenticate with Password and Private Key
See more SFTP Examples
Demonstrates the Chilkat SFtp.AuthenticatePwPk method, which authenticates with a server that requires both a password and a private key. The arguments are the username, the password, and an SshKey private key.
Note: The private-key path is relative to the application's current working directory. Supply the path to your own key file.
Background: Most servers require either a password or a public key, not both — but some high-security deployments mandate two-factor SSH, combining something you know (the password) with something you have (the key). This method satisfies that policy in one call. As always, the password should come from a secure source rather than a literal in code.
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// 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;
// Demonstrates the SFtp.AuthenticatePwPk method, which authenticates with a server that requires
// BOTH a password and a private key. The 1st argument is the username, the 2nd is the password,
// and the 3rd is an SshKey private key.
CkSFtp sftp = new CkSFtp();
// Step 1: Connect the SSH transport. Port 22 is the usual port.
int port = 22;
success = sftp.Connect("sftp.example.com",port);
if (success == false) {
Log.i(TAG, sftp.lastErrorText());
return;
}
// Normally you would not hard-code the password in source. You should instead obtain it
// from an interactive prompt, environment variable, or a secrets vault.
String password = "mySshPassword";
// Load the SSH private key. LoadText reads the file's text, which is then imported.
CkSshKey privKey = new CkSshKey();
String keyText = privKey.loadText("qa_data/id_rsa");
if (privKey.get_LastMethodSuccess() == false) {
Log.i(TAG, privKey.lastErrorText());
return;
}
success = privKey.FromOpenSshPrivateKey(keyText);
if (success == false) {
Log.i(TAG, privKey.lastErrorText());
return;
}
success = sftp.AuthenticatePwPk("mySshLogin",password,privKey);
if (success == false) {
Log.i(TAG, sftp.lastErrorText());
return;
}
// Step 3: Open the SFTP subsystem. This must be done after authentication and before any
// file or directory operations.
success = sftp.InitializeSftp();
if (success == false) {
Log.i(TAG, sftp.lastErrorText());
return;
}
Log.i(TAG, "Authenticated with a password and a private key.");
sftp.Disconnect();
}
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."
}
}