OpenCrypto Project

We JavaCard and we made it truly open

Vasilios Mavroudis | Petr Svenda

What's in?

JavaCard is an amazing platform. Unfortunately, it lacks certain essential features which makes development troublesome and limiting. The OpencryptoJC project releases tools that aim to aid both experienced and new developers:
JCMathLib implements Integers, Big Numbers and Elliptic Curves, while the JCProfiler is the first free profiler for JavaCards.

Opencrypto is kindly supported by our awesome sponsors!


Start building!


Got questions on JCMathLib?

JavaCard Metrics

Supported cryptographic algorithms
for a wealth of different cards.

License & Credits

What you can do with it? Who are we?