Android developer portal with tools, libraries, and apps

The T2 Encryption Library provides FIPS 140-2 compliant data-at-rest security to Android applications.

Android JNI model implementation of Rob Napier's RNCryptor.

An Android library that prevents your app from being pirated / cracked using Google Play Licensing (LVL), APK signature protection and more.

A library which helps developers to integrate Google Sign-in and Facebook Sign-in.

Small library that wraps Account manager API in RxJava Observables reducing boilerplate to minimum.

AndroidTampering is a library that provides an extra layer of security to your Android application. This library protects your application against simple tampering attacks. Please note that this protection methods can also be hacked. So, besides the tampering protection, don't forget to add all the other security recommendations.

Reactive extension for Google's Smart Lock for Passwords API.

JealousSky is an efficient library to encrypt and decrypt data for Android.

With JealousSky is possible to decrypt simple String or even image files.

JJWT aims to be the easiest to use and understand library for creating and verifying JSON Web Tokens (JWTs).

Android library build on top of retrofit, for simple handling of authenticated requests.

This project helps to use elliptic curve cryptography (ECC) with Curve25519.

Heimdall is an OAuth 2.0 client specifically designed for easy usage and high flexibility. It supports all grants as described in Section 4 as well as refreshing an access token as described in Section 6 of the The OAuth 2.0 Authorization Framework specification.

An implementation of the SQRL protocol. This library helps to parse, validate and create SQRL messages.

Simple API to perform AES encryption on Android with no dependencies.

Android application compatible with ZX2C4's Pass command line application.

Encryption is a simple way to create encrypted strings to Android project.

This Java library provides an implementation of macaroons, which are flexible authorization tokens that work great in distributed systems.

Like cookies, macaroons are bearer tokens that enable applications to ascertain whether their holders' actions are authorized. But macaroons are better than cookies!

openpgp-api-lib provides methods to execute OpenPGP operations, such as sign, encrypt, decrypt, verify, and more without user interaction from background threads. This is done by connecting your client application to a remote service provided by OpenKeychain or other OpenPGP providers.

IOCipher provides a virtual encrypted disk for Android apps without requiring the device to be rooted. It uses a clone of the standard java.io API for working with files, so developers already know how to use it. Only password handling, and opening the virtual disk are what stand between the developer and working encrypted file storage. It is based on and SQLCipher.

Windows Azure Active Directory Authentication Library (ADAL) for Android.

SQLCipher is an open source extension to SQLite that provides transparent 256-bit AES encryption of database files.

A repackage of Bouncy Castle for Android (which ships a crippled version of BC).

This is an Android Library Project that provides multiple means to improve network security in mobile applications.

Conceal provides a set of easy to use APIs for performing fast encryption and authentication of data. Apps can use Conceal to encrypt data and large files stored in public locations, for example SD cards.

AndroidPinning is a standalone Android library project that facilitates certificate pinning for SSL connections from Android apps, in order to minimize dependence on Certificate Authorities.