1. Revisiting the Security and Efficiency of SP2DAS, 3PDA, and EPPA Smart Grid Security Protocols

Hamid Amiryousefi; Zahra Ahmadian

Volume 14, Issue 2 , July 2022, , Pages 157-165

http://dx.doi.org/10.22042/isecure.2022.275064.645

Abstract
  This paper analyses the security and efficiency of some notable privacy preserving data aggregation schemes, SP2DAS, 3PDA, and EPPA. For SP2DAS and 3PDA schemes, We show that despite the designers’ claims, there are efficient forgery attacks on the signature scheme used. We present aselective forgery ...  Read More

2. Total break of Zorro using linear and differential attacks

Sh. Rasoolzadeh; Z. Ahmadian; M. Salmasizadeh; M. R. Aref

Volume 6, Issue 1 , January 2014, , Pages 23-34

http://dx.doi.org/10.22042/isecure.2014.6.1.3

Abstract
  An AES-like lightweight block cipher, namely Zorro, was proposed in CHES 2013. While it has a 16-byte state, it uses only 4 S-Boxes per round. This weak nonlinearity was widely criticized, insofar as it has been directly exploited in all the attacks on Zorro reported by now, including the weak key, reduced ...  Read More