ykDroid is an Android app that provides an interface for integrating the challenge-response functionality of YubiKeys into other apps. Both USB and NFC (YubiKey NEO required for NFC) are supported on compatible devices.
ykDroid provides an Intent called
net.pp3345.ykdroid.intent.action.CHALLENGE_RESPONSE, which accepts an extra byte[] challenge and returns an extra
byte[] response. Optionally, an extra String purpose may be passed additionally in the intent to identify the purpose
of the challenge. ykDroid will use this identifier to remember and pre-select the slot used for each purpose.
Upon invocation, ykDroid will automatically detect which connection methods (USB and/or NFC) are available and show a dialog overlay with instructions to the user.
Example code:
private static final int CHALLENGE_RESPONSE_REQUEST_CODE = 12345;
private void startChallengeResponse(final byte[] challenge) {
final Intent intent = new Intent("net.pp3345.ykdroid.intent.action.CHALLENGE_RESPONSE");
intent.putExtra("challenge", challenge);
intent.putExtra("purpose", "some-unique-purpose-identifier"); // optional
startActivityForResult(intent, CHALLENGE_RESPONSE_REQUEST_CODE);
}
public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
if(requestCode == CHALLENGE_RESPONSE_REQUEST_CODE && resultCode == RESULT_OK) {
final byte[] response = data.getByteArrayExtra("response");
// ...
}
}- Keepass2Android - Password manager app compatible with KeePass
- ykpass - Password app that derives passwords directly from the YubiKey's response value
PRs welcome! I am open for adding more YubiKey functionality, but bugfixes and additional translations are also very appreciated :-)
Please use the GitHub issue tracker for reporting bugs and feature requests.
Yubico and YubiKey are registered trademarks of Yubico. Google Play and the Google Play logo are trademarks of Google LLC.