Cryptography/OCBについて、ここに記述してください。

https://twitter.com/hashbreaker/status/1057791485016526848

Wow: Inoue and Minematsu announce a fast attack breaking OCB2.

• https://eprint.iacr.org/2018/1040 OCB2 appeared at Asiacrypt 2004; advertised provable security; is a current ISO standard.

OCB3 seems safe, and Rogaway has been recommending OCB3 for years, but the OCB2 story is terrifying. 9:28 - 2018年11月1日