Sodium is a new, easy-to-use software library for encryption, decryption, signatures, password hashing and more.

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

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.

A simple way to encrypt your secure data like passwords into a native .so library.

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

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

This is a reference guide for Android Security things.

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

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

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

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

A tiny lib (Less than 10 methods) to store constants where attackers will have a harder time to find.

This project contains utility code related to Android security measures.

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.

Storing Credentials securely on a Device is a must. To make that possible we have combined the Android Keystore for generating Cryptographic keys, and storing them securely and using those keys we encrypt the credentials and save them in the SharedPreferences.

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

Password Utility Free Forever

AuthManager is a library which eliminates the boilerplate of Google SignIn and SmartLock integration.

Simple wrapper library in Kotlin is designed to save secret to local shared preferences using Android default security and Android Keystore. KeystoreCompat ensures handling LockScreen and compatibility among diversity of Android versions.

Android JNI model implementation of Rob Napier's RNCryptor.

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.

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

Encryptor4j consists of a set of wrapper and utility classes that make leveraging cryptography in your application alot easier.

Secure and efficient cryptography library for Android. (Auto fix SecureRandom bugs in API 18 and below.)

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

Easy keystore manipulation.

Adds (non native) PGP encryption and decryption support.

This is a lightweight library to generate a 64-bit random key and using AES Algorithm to encrypt/decrypt that random number to get a Secret Key and save it to Key Store.

Cryptographic tools for the Android platform.

A simple Android Library for performing encryption with AES.