@techreport{paquin2014u-prove,
author = {Paquin, Christian and Zaverucha, Greg},
title = {U-Prove Collaborative Issuance Extension},
year = {2014},
month = {June},
abstract = {This document extends the U-Prove Cryptographic Specification by specifying how the Prover and the Issuer can collaborate to issue tokens encoding attributes unknown to the Issuer.},
publisher = {Microsoft Research},
url = {http://approjects.co.za/?big=en-us/research/publication/u-prove-collaborative-issuance-extension/},
number = {MSR-TR-2014-84},
}