end-to-end encryption

Cossack Labs Blog

5 Sep 2019

Implementing End-to-End encryption in Bear App

How we helped the Bear note taking app for iOS/macOS, which decided to implement note encryption for their huge existing user base. A story about finding a balance between usability, security, and mobile platforms' restrictions.


13 Dec 2017

Introducing Hermes

Today is the release day for a proof of concept version of Hermes — a framework for cryptographically assured access control and data security Hermes-core 0.5.1.


17 Mar 2016

Building secure end-to-end webchat with Themis

While doing some protocol design for front-end clients with WebThemis services, we wanted to try it in real-world situations first: how easily could we deploy complicated cryptographic behavior into web apps? Turns out, quite easily. This post describes one of such web apps, designed to illustrate some zero-server-trust design patterns we're using in other developments. 


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