Episode 77: Peer-to-peer Encryption
Bitcoin Explained - The Technical Side of Bitcoin
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How to Derive a Public Key From a Private Key
A public key is a number put through one-way function, right? Yes. Now, if you do it twice, you get a different number again. It's like... It goes both ways, but the toll on the way back is very high. The reason no one else can do it is because then the only way they could do it is take two public keys. So now, they get two private, now they get a mix of two private numbers plus two one-way functions,. so you get adifferent number. I'm not sure if that made a lot of sense.
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