@misc{cryptoeprint:2019:1074, author = {Dirk Thatmann}, title = {Non-monotonic Practical ABE with Direct Revocation, Blackbox Tracability, and a Large Attribute Universe}, howpublished = {Cryptology ePrint Archive, Report 2019/1074}, year = {2019}, url = {https://eprint.iacr.org/2019/1074}, }