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Security implications of quantum computing

Posted by on September 10, 2016.

Recently there has been a spate of media articles on how quantum computing is going to destroy the security world as we know it. These articles are all based on one report that has estimated how long before quantum computers are effective at cracking RSA encryption.

On the one hand, this isn’t news. We’ve known about this for some time. On the other hand, it’s not important. There are other encryption algorithms besides RSA. And, even if the RSA attack can be broadened, lots of people are working on new algorithms that work in completely different ways.

On the third hand, maybe this media interest is good. Maybe it will get some people paying attention to quantum computing in general. Because I have been studying the security implications of quantum computing for over a decade, and, frankly, cryptography and cryptanalysis are probably the least interesting aspects of it.

(And please don’t confuse the cryptanalytic properties of quantum computers with quantum cryptography. Firstly, I’ve dealt with that topic elsewhere, and secondly, quantum cryptography isn’t cryptography: it’s just key exchange.)

Over the next few weeks I’ll try to get the time to expand on the topic.

So far:
A (very small) introduction to quantum computing
Problems addressable by quantum computing
Quantum computing and security management
Security architecture and quantum computing
Quantum computing and access control
Cryptography and quantum computing
Physical security and quantum computing
BCP and quantum computing


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Submitted in: Expert Views, News, News_encryption, Perspectives, Rob Slade, Security |