4 ms·
the magic of public (asymmetric) key crypto is what stops you. http://en.wikipedia.org/wiki/Public-key_cryptography http://en.wikipedia.org/wiki/Public-key_cry
by andrewcooke 14y ago
the magic of public (asymmetric) key crypto is what stops you. http://en.wikipedia.org/wiki/Public-key_cryptography http://en.wikipedia.org/wiki/Public-key_cryptography
in step 4 above the client sends data to the server that is encrypted with the server's public key. you don't have the server's private key, so you cannot decrypt that data. but the server can. so you cannot duplicate things, even if you are watching.
[edited to swap client/server roles]
- zanny 14y agoVery helpful, thanks. Asymmetric keys explain it.
- andrewcooke 14y agoactually, i think the above is incorrect in detail, at least for some key distribution algorithms, but it gives the correct idea.