Why would you use something like PGP if you have to send your encryption key unencrypted to the party you are sending to? And if you leave this key out on something like Twitter for example, couldn’t law enforcement or a third party if they gained access to the other persons email still read the contents of the encrypted email by using this key? Doesn’t this defeate the purpose of using encryption?
In: Technology
Having someone’s public key is kind of like having someone’s mailing address to a PO Box. You can use it to send stuff to them (encrypt the message).
Having the private key is like having the key to that PO Box. You need that to get the mail out (decrypt the message).
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