Eric R. Verheul, Sietse Ringers, Jaap-Henk Hoepman. The self-blindable U-Prove scheme by Hanzlik and Kluczniak is forgeable. IACR Cryptology ePrint Archive, 2015:725, 2015. [doi]
@article{VerheulRH15,
title = {The self-blindable U-Prove scheme by Hanzlik and Kluczniak is forgeable},
author = {Eric R. Verheul and Sietse Ringers and Jaap-Henk Hoepman},
year = {2015},
url = {http://eprint.iacr.org/2015/725},
researchr = {https://researchr.org/publication/VerheulRH15},
cites = {0},
citedby = {0},
journal = {IACR Cryptology ePrint Archive},
volume = {2015},
pages = {725},
}