Abstract. A fault attack is a powerful cryptanalytic tool which can be applied to many types of cryptosystems which are not vulnerable to direct attacks. The research literature contains many examples of fault attacks on public key cryptosystems and block ciphers, but surprisingly we could not find any systematic study of the applicability of fault attacks to stream ciphers. Our goal in this paper is to develop general techniques which can be used to attack the standard constructions of stream ciphers based on LFSR's, as well as more specialized techniques which can be used against specific stream ciphers such as RC4, LILI-128 and SOBERt32. While most of the schemes can be successfully attacked, we point out several interesting open problems such as an attack on FSM filtered constructions and the analysis of high Hamming weight faults in LFSR's.
Faults attacks on stream ciphers Hoch and Shamir firstly applied fault based attack to several stream ciphers REF , including LFSR-based traditional ciphers (schemes based on memoryless filters and combiners, such as LILI-128 and Sober) and RC4 etc.
Fault Analysis of Stream Ciphers
Chryptographic Hardware and Embedded Systems – CHES 2004, Lecture Notes in Computer Science
Computer Science