Block and Stream Ciphers and the Creatures in Between

2022/01/26 by Biryukov, Alex
#Stream ciphers #block ciphers

paper · doi:10.4230/dagsemproc.07021.5

Abstract

In this paper we define a notion of leak extraction from a block cipher. We demonstrate this new concept on an example of AES. A result is LEX: a simple AES-based stream cipher which is at least 2.5 times faster than AES both in software and in hardware.

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