@misc{cryptoeprint:2021:268, author = {Daniel Slamanig and Christoph Striecks}, title = {Puncture 'Em All: Stronger Updatable Encryption with No-Directional Key Updates}, howpublished = {Cryptology ePrint Archive, Report 2021/268}, year = {2021}, url = {https://eprint.iacr.org/2021/268}, }