Forging OCB2 Mode Tags
OCB2 mode is proven to be theoretically secure. Unfortunately it's not practically secure.
StaffDec. 24, 2018, 6:24 a.m.
Hint - you don't need a ton of code for this one. Just read through the paper and make sure you understand how it works at a high level. Part of the beauty of this attack is the (relative) simplicity of it.