Name: Secrets of the Ratchets - Devi Prasad, Manipal University
Start: 2025-08-05T16:05:00+0530
End: 2025-08-05T16:30:00+0530

5 August, 2025
Hyderabad, India
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Note: The schedule is subject to change.

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Tuesday August 5, 2025 4:05pm - 4:30pm IST

Hall 1

In this talk, we will explore the Signal messaging system's implementation of the PQXDH (Post-Quantum Extended Diffie-Hellman) Key Agreement Protocol, which establishes a shared secret key between two parties. PQXDH facilitates mutual authentication while preserving cryptographic deniability. We will discuss how PQXDH ensures both privacy and forward secrecy, all while maintaining a protocol design that is straightforward and intuitive. Additionally, we will examine how Signal leverages NIST-approved Post-Quantum Cryptography (PQC) algorithms and Key Encapsulation Mechanisms (KEMs) in the implementation of PQXDH.

Speakers

Devi Prasad

Professor Devi Prasad, Manipal University

Devi Prasad is a Professor of Practice in Manipal University. In the past, he was a software consultant, an R&D manager, and software architect. He wrote his first program in Pascal in 1985. Later on, he wrote device drivers in C/C++. Of late, he has been studying the design and implementation... Read More →

Tuesday August 5, 2025 4:05pm - 4:30pm IST
Hall 1

Wildcard / Emerging Tech

Audience Experience Level Advanced

Open Source Summit India 2025

Devi Prasad

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