Cyber resilience in the post-quantum era: the time of crypto-agility

We are at a tipping point for quantum computing, which is on the verge of becoming a reality. While its potential is tantalizing, it also represents an unprecedented threat to the traditional data security infrastructure and the cryptographic algorithms that protect it. Post-quantum cryptography – algorithms designed to be secure against classical and quantum computer attacks – is the response.

Quantum computers exploit the principles of quantum mechanics to solve complex problems that classic computers cannot feasibly tackle. Quantum computers use the principles of quantum mechanics to process information in a way that uses qubits, which can exist in multiple states, as opposed to normal computers, which only use “zeros” and “ones”. This creates an exponential scale, which is what gives them their computational power.