Encryption

Haven: Building the Most Secure Baby Monitor Ever?

December 22, 2017

About eight months ago, friends at the Freedom of the Press Foundation reached out to us, to see if we were interested in prototyping an idea they had …

Building the most private app store

June 2, 2016

App stores can work well without any tracking at all Attackers are increasingly seeing app stores as a prime attack vector, whether it is aimed at the …

Copperhead, Guardian Project and F-Droid Partner to Build Open, Verifiably Secure Mobile Ecosystem

March 28, 2016

Three open-source projects haved joined together to announce a new partnership to create an open, verifiably secure mobile ecosystem of software, …

How to Migrate Your Android App’s Signing Key

December 29, 2015

It is time to update to a stronger signing key for your Android app! The old default RSA 1024-bit key is weak and officially deprecated. What? The …

First working test of IOCipher for Obj-C

January 26, 2015

Every so often, we revisit our core libraries in the process of improving our existing apps, and creating new ones. IOCipher has become a standard …

Reducing metadata leakage from software updates

October 16, 2014

Update: now you can do this with Tor Onion Services Many software update systems use code signing to ensure that only the correct software is …

CipherKit updates: IOCipher and CacheWord

September 26, 2014

We’ve been on a big kick recently, updating the newest members of our CipherKit family of frameworks: IOCipher and CacheWord. There also are is a …

Security in a thumb drive: the promise and pain of hardware security modules, take one!

March 28, 2014

Hardware Security Modules (aka Smartcards, chipcards, etc) provide a secure way to store and use cryptographic keys, while actually making the whole …

Tweaking HTTPS for Better Security

February 12, 2014

The HTTPS protocol is based on TLS and SSL, which are standard ways to negotiate encrypted connections. There is a lot of complexity in the protocols …

Integrating Crypto Identities with Android

December 28, 2013

ver the past couple of years, Android has included a central database for managing information about people, it is known as the ContactsContract …