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
I use YOUR public key to encrypt a message that only YOU can read with your private key.
You use MY public key to encrypt a message that only I can read with my private key.
We just sent each other totally secret messages. Nobody else could intercept them, even though our public keys are totally public and sent in the clear.
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