On Tue, Nov 04, 2008 at 01:53:07PM +, Adam Funk wrote:
> On 2008-11-03, David Shaw wrote:
>
> > Rather offtopic, but I read an interesting paper on seals a while back
> > (I'm afraid I don't recall where offhand). Seals never really assured
> > confidentiali
Hey, that sounds like a key distribution problem!
It is, quite literally. The scheme can be thought of as a message
authentication code (MAC), with a shared key that has to be negotiated
ahead of time; and just like with a MAC, anyone who has the secret key
is capable of forging the messa
On 2008-11-03, David Shaw wrote:
> Rather offtopic, but I read an interesting paper on seals a while back
> (I'm afraid I don't recall where offhand). Seals never really assured
> confidentiality. A person who wanted to open a letter would just make
> a mold of the seal,
does no longer prove anything."
>
> I was referring to seals as in http://en.wikipedia.org/wiki/Seal_(device)
> and not in the sense of closing a letter with glue. The kind of seals you
> stamp on the letter (or other documents like laws) itself. It's true that
> these
