Affine equivalence in S-boxes

SAKALLI M. T., BULUŞ E., Sahin A., Buyuksaracogcu F.

IEEE 14th Signal Processing and Communications Applications, Antalya, Türkiye, 16 - 19 Nisan 2006, ss.45-46, (Tam Metin Bildiri) identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/siu.2006.1659838
  • Basıldığı Şehir: Antalya
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.45-46
  • Trakya Üniversitesi Adresli: Evet

Özet

Nowadays, Linear redundancy has been identified in all S-boxes generated from finite field inversion and power mappings. That means it may be used in a new cryptanalytic attack in the future. In our study, we have developed an application to show that all output functions of an S-box are equivalent under an affine transformation of the input bits. To realize this application, we have used 4-bit input and 4-bit output S-box which has similar design technique with AES S-box. This application shows that S-boxes generated with the same tecnique of AES S-box has a vulnerability.