1) if you sign the message after it has gone through the hash, do we ever get the original message back? Or would we even want to? Because hash functions are not invertible.
2) it's so cool to understand now how the electronic signatures do work that I use in my everyday life. I am wondering now why we always have to verify we are "not a computer" by typing in weird letters and numbers shown in an image above our text input box. What does that have to do with our cryptography??
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