Design of a New Stream Cipher--LEX

  • Authors:
  • Alex Biryukov

  • Affiliations:
  • University of Luxembourg, FSTC, Luxembourg-Kirchberg, Luxembourg L-1359

  • Venue:
  • New Stream Cipher Designs
  • Year:
  • 2008

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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.