http://ssd.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/ps/module/deep-dive-end-end-encryption-how-do-public-key-encryption-systems-work
What Exactly Are Keys, And How Are Keys Tied Together? # Public key cryptography is based on the premise that there are two keys: one key for encrypting, and one key for decrypting. You can send a public key over an insecure channel, like the internet. You can post this public key everywhere, in very public places, and not compromise the security of your encrypted messages.