Date: Sat, 16 Dec 2017 09:58:52 -0500 From: "Denny O'Breham" <obreham@...il.com> To: passwords@...ts.openwall.com Subject: Re: Authentication vs identification I'm not sure what you mean by 'false entities', but let's use a physical example. Say you want to rent storage space. Each client has access to a private locker. Let's look at two business models. In business model one, I have all keys for every locker. When a client wants access to his locker, I ask for his name (identification) and his driver's license (authentication). Once I'm sure everything is OK, I open the locker under his name for him and lock it again once he's finished. In business model two, when someone ask for storage space, I give him a key that correspond to a specific locker. The person is now responsible for that key and anyone who has it can use the locker. The key (which I gave to the client and has no link whatsoever with him) is now accomplishing both the identification and authentication of the client. On 12/16/17, e@...tmx.net <e@...tmx.net> wrote: > On 12/16/2017 03:21 PM, Denny O'Breham wrote: >> A token in a cookie. The user did not give the info in the cookie, it >> was put on his computer by the website, he doesn't even know it >> exists, yet it is used each time he makes a request during his session >> for authentication. > > a user and a browser are FALSE ENTITIES in this problem. > the interaction is between the client and the server. > the client authenticates self -- regardless of the technical routines > going on on the client side, they are irrelevant to the problem altogether. > > >> >> On 12/16/17, e@...tmx.net <e@...tmx.net> wrote: >>>> Although authentication typically requires the active participation of >>>> the >>>> prover, while identification may not, that is not the crucial >>>> distinction. >>>> It would be a mistake to define the difference in those terms. >>> >>> a counterexample? >>> > >
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