Practical-time related-key attack on Hummingbird-2

  title={Practical-time related-key attack on Hummingbird-2},
  author={Zhenqing Shi and Bin Zhang and Dengguo Feng},
  journal={IET Information Security},
Hummingbird-2, designed by Engels et al., is a lightweight cipher with built-in MAC functionality. In this study, the authors examine the security of Hummingbird-2 in the related-key model. First, the authors define a new cryptographic notion of an S-box, called combination points, based on its differential equation, and demonstrate some properties of… CONTINUE READING