this post was submitted on 11 Jun 2023
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Technology
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Absolutely. Now we're stuck using a protocol that has zero encryption because decades ago no one thought about that. All our private correspondence is readable by every ISP and government it passes. If only we could make an email 2.0...
No, encryption was considered. It was supported from pretty early on via PGP. If you check out decent mail clients (obligatory digdeeper), you'll find the tooling.
PGP email has nothing to do with the email protocol. All your message metadata and headers are still not encrypted/can’t be encrypted. You can only encrypt some payload with a PGP key, and it’s up to the receiver to figure out whether or not they want to trust any of the message metadata. The entire envelope is still plaintext everywhere. PGP email is just email, but you’re sending some random encrypted text in it.
Why didn't it ever become the norm?
Encryption was illegal back in those days, especially for export. Google “crypto wars”.
Furthermore it was quite computationally expensive. Modern CPUs have special instructions to work with AES and other algorithms, but back then it had to be done with individual instructions and with slow clock speeds.
I use GPG mail with Apple Mail client and it works great. Just need to get the public keys of people you want to send encrypted email to.
Not sure how anyone can say “GPG” and “Works great” in the same sentence tbh. GPG is a usability nightmare except for the most advanced users who use it. Good luck trying to get your house contractor or doctor or representative or non-techie friends and family or really anyone to give you their “public key”