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Hype and confusion surrounding quantum computers in cryptography
- The hype surrounding the potential threat of quantum computers in cryptography is not entirely accurate and is more complex than the headlines suggest.
- Mathematicians, startups, cyber agencies, governments and enthusiasts have each added to the hype in their own ways.
- While Shor's algorithm has captured the imagination of experts, a practical quantum computer using it to break encryption doesn't yet exist and no one knows for certain when it might.
- While Google and IBM have had limited successes in demonstrating their quantum computing capabilities, both have stopped short of proving a practical threat.
- The dangers posed by quantum computing, according to the US National Security Agency, come from the creation and storage of encrypted data that may be vulnerable to future attacks from quantum computing.
- The Chinese report of encryption being cracked by quantum computing was actually a much more modest claim, while quantum resistant encryption is the recommended course of action across IT.
- The reality is that modern encryption is not currently vulnerable to quantum computing, but the potential exists and so steps should be taken to secure data with quantum-resistant (post-quantum) algorithms.
- Major IT regulators have already issued recommendations on transitioning to post-quantum cryptography, which should be studied and gradually implemented.
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