Tor Helleseth

New Permutation Trinomials From Niho Exponents over Finite Fields with Even Characteristic

2016 · arXiv (Cornell University)

In this paper, a class of permutation trinomials of Niho type over finite fields with even characteristic is further investigated. New permutation trinomials from Niho exponents are obtained from linear fractional polynomials over finite fields, …

Yoyo Tricks with AES.

2017 · IACR Cryptology ePrint Archive

In this paper we present new fundamental properties of SPNs. These properties turn out to be particularly useful in the adaptive chosen ciphertext/plaintext setting and we show this by introducing for the first time key-independent …