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Maybe it's worth start trading one time pads before quantum computers can break RSA. We also need to worry about retrospective decryption. https://en.wikipedi
by tiborsaas 3y ago
Maybe it's worth start trading one time pads before quantum computers can break RSA.
We also need to worry about retrospective decryption.
https://en.wikipedia.org/wiki/Harvest_now,_decrypt_later https://en.wikipedia.org/wiki/Harvest_now,_decrypt_later
- ramchip 3y agoThis is covered in the article. It even links to the exact same page.
- pclmulqdq 3y agoOne-time pads need you to have a limited amount of data to encode and a good channel through which to send your one-time pad. However, assuming AES isn't broken by quantum computers (there is no evidence that it is), you could use a relatively small one-time pad to generate keys to encrypt a much bigger bulk of data. Not the craziest idea in the world, but you still need a very secure physical key distribution medium, which is hard.
- isotropy 3y agoQuantum key distribution solves the sharing problem and will arrive sooner, for a certain budget.
- pclmulqdq 3y agoI'm not so sure - QKD needs good SNR optical paths from source to destination, so over any real distance it's pretty hard. Physical medium security is just a matter of money today. There are ideas of satellites doing QKD, but that will fall firmly into the realm of nation-states, which already spend a shit load on physical security.