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Ah, but paper letters are delivered by the USPS, and thus not secure against NSA spying ether.
by wesleyac 13y ago
Ah, but paper letters are delivered by the USPS, and thus not secure against NSA spying ether.
- davyjones 13y ago* Prepare 100 (or whatever) onetime pads using truly random events. * Prepare a metadata sheet indicating the serial number of each of those one time pads. * Hand both over in a face to face meeting (you keep a copy of metadata and one time pads). * Indicate the serial number of the onetime pad used in your letter and encode the rest of your letter using that onetime pad and post the letter. * Destroy your one time pad and your corresponding party also destroys his/her copy in an irretrievable fashion. This all assuming nobody else gets to see the onetime pad except you both.
- wesleyac 13y agoYes, but that requires meeting in person. If you want to go that far, just use PGP + OCR + Air Gap. Much simpler.
- a3n 13y agoThe only reason internet surveillance is a problem is that it's easy to automate and doesn't leave evidence that's easy to spot. Metadata on a physical letter is easy to collect without evidence of tampering, and the USPS takes photos of letters to make delivery easy. They supposedly delete the images. I assume they share the images with the NSA. The contents of a letter in an envelope are harder to spy on, because it's a manual process and you leave evidence of tampering unless you're really good and careful. But really good and careful takes even longer. If you're a specific target, then they'll get what they want. But if you're an average unsuspected person, a letter is just too much trouble to spy on, and I think they probably don't do mass surveillance on the inside of enveloped letters.