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Re: Broadcast encryption

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On 2014-05-14 09:28, Roedy Green <see_website@mindprod.com.invalid> wrote:
> Here is what I would like to do.
>
> I assign each of my "spies" a key of some sort.
>
> I create a common file that gets sent to all the spies.
>
> However, it is encrypted in some way I don't even know is possible,
> but only m of the n spies can decrypt it.
>
>
> I don't want the  overhead of having to prepare and send a different
> file for each spy.
>
> Have you ever heard of such a thing?
>

Public Key crypto.

        hp


-- 
   _  | Peter J. Holzer    | Fluch der elektronischen Textverarbeitung:
|_|_) |                    | Man feilt solange an seinen Text um, bis
| |   | hjp@hjp.at         | die Satzbestandteile des Satzes nicht mehr
__/   | http://www.hjp.at/ | zusammenpaßt. -- Ralph Babel

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Broadcast encryption Roedy Green <see_website@mindprod.com.invalid> - 2014-05-14 02:28 -0700
  Re: Broadcast encryption Roedy Green <see_website@mindprod.com.invalid> - 2014-05-14 02:54 -0700
  Re: Broadcast encryption "Peter J. Holzer" <hjp-usenet3@hjp.at> - 2014-05-15 12:13 +0200

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