[Cryptography] QM giveth, QM taketh away

Henry Baker hbaker1 at pipeline.com
Thu Feb 11 11:05:05 EST 2021

There has been some public hand-wringing in the media
over China's push for quantum computation to break
current encryption methods.

I've heard of people working on the following scheme:

1. One-time pads can't be broken by quantum computation,
but require incredibly long keys which are hard to manage.

2. Quantum key distribution supposedly enables guaranteed
private distribution of OTP keys.

3. Quantum effects enable the *generation* of true random
numbers for OTP encryption.

Is this the post-quantum future?

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