At 15:54 30/11/97 -0800, David Sternlight wrote:
[...] For instance it is
mutually exclusive to allow anyone to be a signer and to allow only those
meeting certain standards to be signers.
Leaving aside, for the moment, any reference to any particular system: is
this necessarily true?
I can imagine a system in which the signature itself may carry an
authority. So those signers meeting certain standards may supply a
credential (as part of the signature) which is verifiable using a public
key of the body which set those standards.
But as a non-expert in this field, I may be missing something.
GK.
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Graham Klyne