Android™
Android™
Load a Private Key from BinData (Any Format)
See more Private Key Examples
Demonstrates the Chilkat PrivateKey.LoadAnyFormat method, which loads a private key by inspecting the bytes in a BinData. The first argument is the BinData and the second is the password (used if the detected key is encrypted).
Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.
Background: When you have key bytes in memory but do not know their exact format — downloaded, decrypted, or pulled from a database — this figures it out for you, recognizing PKCS #1/#8 DER, encrypted PKCS #8, PEM, JWK, Chilkat XML, Microsoft formats, and more. It removes the guesswork of choosing a specific loader, at the small cost of the detection step. Supply the password so it can decrypt an encrypted key without a second call.
Chilkat Android™ Downloads
// 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 PrivateKey.LoadAnyFormat method, which loads a private key by inspecting the
// bytes in a BinData. The 1st argument is the BinData and the 2nd is the password (used if the
// detected key is encrypted).
CkBinData bd = new CkBinData();
success = bd.LoadFile("qa_data/some_private_key");
if (success == false) {
Log.i(TAG, bd.lastErrorText());
return;
}
CkPrivateKey privKey = new CkPrivateKey();
// The key password is not hard-coded in a real application; obtain it from an interactive
// prompt, environment variable, or a secrets vault.
String password = "myKeyPassword";
// Chilkat auto-detects the representation: PKCS #1/#8 DER, encrypted PKCS #8, PEM, JWK,
// Chilkat XML, Microsoft formats, and more.
success = privKey.LoadAnyFormat(bd,password);
if (success == false) {
Log.i(TAG, privKey.lastErrorText());
return;
}
Log.i(TAG, "Loaded a " + privKey.keyType() + " private 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."
}
}