Yeah. I had hoped to scope the conversation down to authentication quickly, because, yes, security means a lot of things. I clearly didn't do that well.
You distinguish between "knowing, doing, or owning" and "something you know, something you have, or something you are"? I guess there might be a slight difference between doing and something you are, but I'm not sure I see the difference?
re. Public Key Crypto. Yes. Using the public key to decrypt and the private key to encrypt is how to use Public Key for author verification and you can reverse it for encryption. One validates the author and the other protects the data.
You are right to say that a better way of saying the sentence would be:
"in the case of digital signatures, the public key is used to decrypt thus everyone can decrypt."
Thanks for helping me with this. Will have to be more more clear next time I write something.
The something you are (which generally doesn't apply to web-based authentication) are biometrics. So something you are - the pattern of blood vessels in your retina - is something very different from something you "do". The fact that you have "muscle memory" that allows you to sign your name a certain way would again be "something you are". I can't pass that on to someone else - only I can do it.
You distinguish between "knowing, doing, or owning" and "something you know, something you have, or something you are"? I guess there might be a slight difference between doing and something you are, but I'm not sure I see the difference?
re. Public Key Crypto. Yes. Using the public key to decrypt and the private key to encrypt is how to use Public Key for author verification and you can reverse it for encryption. One validates the author and the other protects the data.
You are right to say that a better way of saying the sentence would be: "in the case of digital signatures, the public key is used to decrypt thus everyone can decrypt."
Thanks for helping me with this. Will have to be more more clear next time I write something.