Posts by Ryan Lester
8 posts, 0 Comments
Cofounder & CEO of Cyph • Former SpaceX engineer • Speaker at Black Hat & DEF CON
Cyph Cryptographic Algorithm Updates
access_time January 29, 2023
person Ryan Lester
The latest release of Cyph includes a major upgrade to our underlying cryptography stack. 🎉 As a result of all the valuable work performed by the global cryptography community throughout the NIST Post-Quantum Cryptography (PQC) competition, we have made the following changes to our quantum-resistant algorithm selections: For asymmetric encryption: McEliece (pre-PQC variant, code-based) +…
Cyph + PGP
access_time June 10, 2020
person Ryan Lester
One of our major competitors, Keybase, was acquired by Zoom last month. Many Keybase users are now looking for alternatives as a result, primarily due to a lack of trust in the new ownership to maintain high privacy standards, as well as speculation that the service is now doomed to ultimately be shut down. However,…
Quantum Resistance
access_time April 29, 2020
person Ryan Lester
We highlight “quantum resistance” as a key feature of Cyph. This naturally leads to a frequently asked question of what that really means, and whether it’s a real feature or just vague technobabble crafted by our marketing department. To cut to the chase: yes, this is a real and increasingly important feature, and it is…
Source Code Licenses
access_time January 13, 2020
person Ryan Lester
Cyph’s source code is 100% public. Our openly accessible GitHub repository includes all client and server code, with the layer that handles releasing Cyph as a native app available here. This transparency is critical to the trust and security of the service, because it ensures that independent security researchers are able to review it freely, and notify…
Why should you use Cyph?
access_time January 7, 2020
person Ryan Lester
Cyph is a cryptographically secure messaging and social networking service, providing an extreme level of privacy combined with best-in-class ease of use. A question that often comes up is what makes it unique, or in what ways is it better than some other service. This isn’t a straightforward question to answer, as security isn’t just…
Cyph Video Calling on Its Way to iOS
access_time April 20, 2016
person Ryan Lester
Good news everyone! Apple has just added WebRTC video calling functionality to its roadmap for Safari, which means that all of you on iOS with no choice but to use Safari can expect to be able to make Cyph calls just like your friends on Android. No word on exactly when this will be ready, but my…
Cyph Chooses NTRU Crypto to Power Its Secure Chat Communication Platform
access_time September 29, 2015
person Ryan Lester
turned_in_not NTRU, Press Release, Quantum-Resistant Encryption
Sept 29, 2015 — Wilmington, MA — Security Innovation, the authority in application and crypto security, announced today that its standards-based NTRU crypto has been selected by Cyph to deliver the safest communication channel for completely private conversations. Cyph is a surveillance-free chat experience that offers voice and video calling as well as file and…
Cure53 Audit
access_time November 13, 2014
person Ryan Lester
“Cyph provides security from a broad range of cryptographic attacks and very strong client-side crypto. The general conclusion of the test is that no major issues in regards to application security or cryptographic implementations could be spotted in spite of a thorough audit.” — Conclusion of the independent security audit conducted by Cure53