GrapheneOS@kkarhan @signalapp @delta PGP is legacy technology with tons of legacy cryptography like still using SHA-1 for fingerprints in practice. It doesn't have forward secrecy like a proper secure messaging system. The main implementation of it that's widely used is horribly implemented with massive security flaws throughout it (GPG). The web of trust nonsense is badly designed and always in use even to simply verify a specific file with a specific key from a file. Keyservers are another big mess.
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