Re: Basics of key authentication

From: Jonathan (jerup3500_at_yahoo.com)
Date: 07/29/04 

Date: 29 Jul 2004 08:53:47 -0700

"OpticTygre" <optictygre@adelphia.net> wrote in message news:<UPudnYJ36vqTpJ7cRVn-qQ@adelphia.com>...
> Ok, so everything I've read basically tells me the client creates a public
> and private key. The public key gets copied to the server, and when the
> client wants to log in, the server encrypts some message with the public
> key, and the client decrypts it with its private key to prove he is who he
> says he is. Is that right so far?
>
> Alright, if that's ok, then I have a few questions.
>
> 1. A server can have tons of public keys stored on it. How does he know
> which public key to encrypt the message with for the client?
>
> 2. In the process of public / private key authentication for logins, what
> is the order things are typically done? IE:
> a. client says "hey, I want to connect"
> b. client sends a message encrypted with private key
> c. server decrypts through list of public keys
> etc..... (I'm sure the above isn't right)
>
> In other words, what's the step-by-step process used for authenticating via
> public/private keys between client and server? Thanks for helping to clear
> things up.
>
> -Jason
 I am IT student at a nation college.We have been talking in class
about both public and private keys the question I have to pose is
whether or not using the same public or private key is possible to use
on differnt operating system in a complex network over a WAN.

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