This paper presents several methods to construct trapdoor block ciphers. A trapdoor cipher contains some hidden structure; knowledge of this structure allows an attacker to obtain ...
Rijmen and Preneel recently proposed for the rst time a family of trapdoor block ciphers 8]. In this family of ciphers, a trapdoor is hidden in S-boxes and is claimed to be undetec...
Hongjun Wu, Feng Bao, Robert H. Deng, Qin-Zhong Ye