Quantum cryptography is supposed to be unbreakable. But a flaw in a common type of equipment used makes it possible to intercept messages without detection.
Quantum cryptography has been used by some banks to protect data, and even to hide election results in Switzerland last year. But it has been discovered that shining bright light into the sensitive equipment needed makes it possible to hijack communications without a trace.
Quantum cryptography has been used by some banks to protect data, and even to hide election results in Switzerland last year. But it has been discovered that shining bright light into the sensitive equipment needed makes it possible to hijack communications without a trace.
Read how on NewScientistTech
2 comments:
This is a reminder that physical security is always critical. Yes, "Eve" can intercept the quantum-encrypted information without "Alice" or "Bob" knowing about it, but she has to have access to Bob's equipment.
This is not an uncommon situation. It's quite easy to break Windows security if you have physical access to the machine in question. And Linux/UNIX systems aren't that difficult either.
You're absolutely right, Chad.
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