Themis tag

8 Mar 2016

Building and Using Themis in PNaCl

This post outlines our experience of porting typical C/C++ library (which is obviously Themis, in our case) to PNaCl module. A few challenges, a number of interesting riddles and Themis suddenly has a new home!

Themis howto cryptography PNaCl Web

Read more...


3 Mar 2016

What's wrong with Web Cryptography

Threats you may face when implementing cryptography within your web application JS way.

applied security Themis PNaCl cryptography Web

Read more...


1 Mar 2016

WebThemis: proper crypto for modern Web

Introducing WebThemis: a Google Chrome library to develop secure web applications.

Themis products cryptography releases Web

Read more...


11 Feb 2016

Fixing Secure Comparator

After publishing Secure Comparator paper, we've received a number of concerns from the cryptographic community about possible security breach, in case, where one of the parties is intentionally falsifying the protocol. We've adressed these concerns, and, in this blog post and paper update would like to elaborate how and why. 

Themis cryptography Secure Comparator zkp

Read more...


9 Dec 2015

Introducing Secure Comparator

Secure Comparator is a novel authentication technique we're proposing the cryptographic community to evaluate. It can be used as any id/secret pair authenticator in environments, where no trust relationships exist between two parties.

Themis cryptography Secure Comparator zkp

Read more...


20 Nov 2015

WeakDH/LogJam vs Secure Session

Being asked several times 'Is Secure Session prone to attacks similar to WeakDH/LogJam', we've decided to outline some principal differences, which render Secure Session really secure from these attacks.

Themis cryptography Web

Read more...


18 Nov 2015

Armoring ed25519 to meet extended security challenges

When developing new, advanced features of Themis library, we had to extend some of the ECC cryptography available in open source with our own implementation to provide simple point multiplication with random (unknown in advance) point. To achieve that, we've extended Daniel J. Bernstein's implementation of ed25519 with our own math and code. This blog post outlines our direction of thinking.

Themis cryptography Secure Comparator zkp

Read more...


4 Nov 2015

Introducing Themis 0.9.2

Introducing updated and polished Themis, release 0.9.2.

Themis products Python iOS Ruby Android releases PHP Go

Read more...


1 Oct 2015

Building encrypted chat service with Themis and mobile websocket example

This tutorial shows simple ways of integrating cryptographic services presented by Themis cryptographic library into your already existing multi-platform application.

Themis products iOS Ruby howto Android development Web

Read more...


22 Sep 2015

Notes on adding cutting edge features

Some important notes on intruducing experimental, bleeding edge features to Themis, changes in Themis build system in the regard of these features, and a tease of new things to come.

Themis cryptography Secure Comparator zkp

Read more...

All posts

Previous Previous

Copyright © 2014-2019 Cossack Labs Limited
Cossack Labs is a privately-held British company with a team of data security experts based in Kyiv, Ukraine.