[cryptography] uprove digital credentials

Adam Back adam at cypherspace.org
Thu Mar 18 08:57:55 EDT 2010


I had a read of the OSP but I am not that familiar with the concept.

Does it mean that one could use the specification for any application:
eg use the serialization given for ecash, anonymous tokens of some
kind - something that is not directly an envisaged use case.

And would it be allowed to deviate from the serialization eg say you
needed to use elliptic curve, or a compact serialization for
convenience would that non-conformance to spec prevent one benefiting
from the OSP?  (Not that typically following the serialization should
be an issue for most applications I would presume).


On Thu, Mar 18, 2010 at 5:48 AM, Greg Thompson <gregth at gmail.com> wrote:
> On Mar 17, 2010, at 4:03 AM, Adam Back wrote:
> Now I have to say I never read exactly what OSP allows but I think
> people are viewing this as a positive thing, and if people get to use
> the patents for privacy related apps that is cool.
> Hi Adam,
> I took no part in the legal side of things, but our intent (and by "our" I'm
> not speaking as a representative of Microsoft) was that anyone could use the
> portions of the patents needed to implement the crypto spec
> (see http://www.microsoft.com/u-prove) for any purpose.  The spec details
> one issuance protocol and the basic selective disclosure presentation
> protocol.  We would love to receive feedback (at uprovectp at microsoft.com)
> from the community regarding the spec and the protocols we've opened up.
> Cheers,
> Greg
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