Welcome to SC4

SC4 is Strong Cryptography (or Secure Communications) for non-technical people. Our goal is to produce a suite of fully open security products that are usable by non-experts. We are not quite there yet, but we're working on it. At the moment we have two products in private beta:

• The original SC4, a PGP replacement that runs in a browser (or a command line)
• A USB hardware-secure module (HSM)

We're also working on an iOS app, and a more user-friendly version of SC4. If you are interested in more details or want to get involved in our work please contact us.

Please read our white paper, and FAQs for experts and for mere mortals.