User:Zarutian/Authorization Certificates

From Erights

This is an idea I have been mulling over a bit.

An recieptionist (an object), that is reachable via an sturdyref, recivies an sequence of authorization certificates.

An certificate is an tuple of issuer, instructions and signeture of those two by the issuer. An issuer in above is simply an public key (or fingerprint of the key to identify it). The private key counterpart of that key is used to sign the certificate.

The recieptionist has an mapping of issuers to avatar objects. For each certificate in an sequence

 the recieptionist checks the signeture of the certificate
 if invalid then an exception is thrown
 the recieptionist then checks if it has an issuer to avatar mapping
 if not then an exception is thrown
 then the recieptionist invokes the avatar object and passes it the instructions in the cert
 the avatar object is free to interpret those instructions as its programer sees fit.