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Cybersecurity in the Age of Quantum Computing: A Cryptographer’s Call to Action

ISARA Corporation & Accenture Federal Services
Oct 31, 2025

Computing power has advanced far beyond the invention of the transistor. Today’s digital infrastructures rely on public-key cryptography to safeguard commerce, state secrets and personal privacy. But a new paradigm is within our view. Quantum computers utilize superposition and entanglement to perform computations that are infeasible for classical machines.

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Lattice-Based Cryptography

Victoria de Quehen
Sep 21, 2021

Lattice-based cryptography is the most important area of quantum-safe cryptography and is known for its efficiency and versatility. Its use cases range from the foundational building blocks of cryptography…

Math Paths to Quantum-safe Security: Hash-based Cryptography

Victoria de Quehen
Feb 24, 2020

Digital signature algorithms are a critical component of public-key infrastructure, with applications ranging from code signing to establishing secure connections. However, classical digital signature…

Math Paths to Quantum-Safe Security: Isogeny-Based Cryptography

Victoria de Quehen
Jul 27, 2018

One of the most widely deployed public-key cryptographic algorithms is the elliptic curve Diffie-Hellman key exchange (ECDH). This, as well as most currently used protocols, is vulnerable to attacks using…

A Short History of Public Key Cryptography

Victoria de Quehen
Jun 14, 2018

While the ideal of public-key cryptography is to have a “set and forget” group of algorithms that will guarantee security forever, increasingly we are realizing this ideal is not viable. There is not one…