Why is QKD considered limited or even useless for encryption key security now and potentially in the foreseeable future?

QKD, while theoretically secure, faces practical limitations such as distance constraints, implementation challenges, and high costs, which currently restrict its widespread adoption for encryption key security. Additionally, the requirement for trusted nodes and vulnerability to side-channel attacks raise concerns about its efficacy in providing absolute security against potential quantum threats.

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What is Post Quantum Cryptography?

Q: What is Post Quantum Cryptography?

Cryptography that is implemented using algorithms that are thought safe from future quantum attack. Today’s asymmetric algorithms underpinning most internet transactions are at risk and need to be replaced with PQC algorithms, however while they are better than what is in place not even these PQC algorithms are proven secure.

Q: What is Post Quantum Cryptography?

Cryptography that is implemented using algorithms that are thought safe from future quantum attack. Today’s asymmetric algorithms underpinning most internet transactions are at risk and need to be replaced with PQC algorithms, however while they are better than what is in place not even these PQC algorithms are proven secure.

Post Quantum Cryptography (PQC) is a leap towards securing digital communications against the potential threat posed by quantum computers. Unlike classical cryptography algorithms, which may succumb to quantum attacks, PQC algorithms aim to withstand these challenges. While PQC offers a stronger line of defense compared to current standards, it’s crucial to acknowledge that they aren’t certified as entirely secure, marking the beginning rather than the end of our journey towards quantum-resistant cryptography.

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