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I thought quantum encryption was about secure key distribution for traditional sigint, not anything about a new encryption mechanism or medium for communicating
by drb91 9y ago
I thought quantum encryption was about secure key distribution for traditional sigint, not anything about a new encryption mechanism or medium for communicating an encrypted payload or an ability to detect interception. Do you have any more information?
- outworlder 9y agoYou need the quantum state and a conventional communication channel. Your 'key' is basically the quantum state. So you can consider it a new encryption mechanism. Interception detection is for someone messing with the quantum state (in other words, trying to use it). Both parties will know that happened. It is not for the conventional channel.
- deleted 9y ago[deleted]
- drb91 9y agoYou can’t consider it a new form of encryption if you’re just stuffing a key distributed with entanglement into AES and sending the encrypted result over tcp. The detection only holds for key distribution, which is a different problem than encryption (to my understanding). As i understand it, the main novelty here is that china has demonstrated recent ability to teleport particles a long ways away. This is only related to encryption in the slimmest chain of buzzwords.