Open Source Java Software Development Apps for Android

silvertunnel.org is a project that provides an end-user browser, a Java library and additional Java security tools to easily access anonymity networks such as the Tor (torproject.org) network. Secure and easy to use. Tor4Java and Tor Browser. Attention: see project status on page https://sourceforge.net/p/silvertunnel/discussion/962278/thread/83dc2d02/#

An Android library that prevents your app from being pirated / cracked using Google Play Licensing (LVL), APK signature protection and more. API 14+ required. This library applies some techniques to help protect your app's users and attempt to thwart reverse engineers and attackers. BUT, this isn't guaranteed to stop your app from getting pirated. There is no such thing as 100% security, and a determined and skilled attacker with enough time, could remove these checks from the code. The real objective here is to raise the bar out of reach of opportunist and automatic attackers. Google Play offers a licensing service that lets you enforce licensing policies for applications that you publish on Google Play. With Google Play Licensing, your application can query Google Play to obtain the licensing status for the current user. Any application that you publish through Google Play can use the Google Play Licensing service. No special account or registration is needed.

SilverTunnel-NG is a Java library that implements and encapsulates all the complex network protocol stuff needed for anonymous communication over the Tor anonymity network. SilverTunnel-NG Netlib can be easily integrated in almost every existing and new Java application. The library requires Java 1.6/Java SE 6 or a newer version. This is a fork of silvertunnel (https://silvertunnel.org) Version (0.0.4) is deployed to maven. Since Version 0.0.4 SilverTunnel-NG also runs on Android. YourKit is kindly supporting this open source project with its full-featured Java Profiler. YourKit, LLC is the creator of innovative and intelligent tools for profiling Java and .NET applications. Take a look at YourKit's leading software products: http://www.yourkit.com/ . Automatic Builds and Tests are done with DEV@CloudBees : https://silvertunnel-ng.ci.cloudbees.com/

Java library with Cryptographic algorithms. Easy to use Crypto algorithms. Works on Windows, Linux, Android. No external lib dependencies, no useless abstractions, no 'crypto provider'. Elliptic curves was borrowed from BouncyCastle and simplified a lot. Most of EC classes are custom algorithms for certain curves. Can be easily deleted if u dont need them. With couple of classes u can parse and construct those ugly ASN.1 structures, look at RSA and EC key formats for example. No bad dependencies between classes, so u can easily cut off unnecessary code and simply include what u need in your project. Feel free and simple without headache. We are using class Binary as best for us to work with byte arrays. Simple classes for console-like colored apps in GUI-mode. Look also http://demo.sls.team