Zero knowledge architectures

A talk for solution architects and technical leads, in which we took a deep look into data lifecycle, risk, trust, and how they affect security architecture, encryption, and key management techniques. We illustrated typical SDL patterns: narrowing trust, monitoring intrusions, zero knowledge architectures, distributing trust. The goal of the talk was to provide a general thinking framework and enough ideas about tools for senior engineers for them to be able to plan their solutions securely, in relation to the sensitive data inside.

A workshop for iOS developers that illustrates how to implement end-to-end encryption of Firebase notes application. Zero knowledge algorithms and protocols ensure that no keys, passwords, files, or any other sensitive material ever gets transferred in an unencrypted or reversible form. Workshop code contains two encryption schemes and set of general recommendations of improving security of any iOS application.

The talk focused on real-world problems that ZKA counters, typical cryptographic designs and progress in different spheres of ZKA. The talk also explained the practical approaches useful for mobile developers (implementing data sharing and user collaboration on data in a cloud in a way that makes a mobile app provably secure).

Our CTO’s talk on the evolution of end-to-end software, survival within the “everything will be broken” model with the help of employing proper cryptography and trust management, plus a disclosure of some ideas and concepts behind Hermes.

These are the slides that accompanied the talk of our core scientific contributor. The talk is focused on on evolving from regular authentication to Zero-Knowledge Proofs (including with Secure Comparator) at DefCon Crypto Village.