@misc{cryptoeprint:2019:1470, author = {Carsten Baum and Tore K. Frederiksen and Julia Hesse and Anja Lehmann and Avishay Yanai}, title = {Proactively Secure Distributed Single Sign-On, or How to Trust a Hacked Server}, howpublished = {Cryptology ePrint Archive, Report 2019/1470}, year = {2019}, url = {https://eprint.iacr.org/2019/1470}, }