AKF: A key alternating Feistel scheme for lightweight cipher designs

Karakoc F., Demirci H., Harmanci A. E.

INFORMATION PROCESSING LETTERS, vol.115, no.2, pp.359-367, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 115 Issue: 2
  • Publication Date: 2015
  • Doi Number: 10.1016/j.ipl.2014.10.010
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.359-367
  • Istanbul Technical University Affiliated: Yes


In the classical Feistel structure the usage of alternating keys makes the cipher insecure against the related key attacks. In this work, we propose a new block cipher scheme, AKF, based on a Feistel structure with alternating keys but resistant against related key attacks. AKF leads constructions of lightweight block ciphers suitable for resource restricted devices such as RFID tags and wireless sensor nodes.