@misc{cryptoeprint:2018:840,
    author = {Nico Döttling and Ryo Nishimaki},
    title = {Universal Proxy Re-Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2018/840},
    year = {2018},
    url = {https://eprint.iacr.org/2018/840},
}