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XPX: Generalized Tweakable Even-Mansour with Improved Security Guarantees
XPX XEX Even-Mansour
2015/12/30
We present XPX, a tweakable blockcipher based on a single permutation P.
On input of a tweak (t11, t12, t21, t22) ∈ T and a message m, it outputs ciphertext c =
P(m⊕∆1)⊕∆2, where ∆...