Analysis and design of stream ciphers
Analysis and design of stream ciphers
Fast correlation attacks on stream ciphers
Lecture Notes in Computer Science on Advances in Cryptology-EUROCRYPT'88
Correlation Attacks on Clock-Controlled Shift Registers in Keystream Generators
IEEE Transactions on Computers
Handbook of Applied Cryptography
Handbook of Applied Cryptography
Edit Distance Correlation Attack on the Alternating Step Generator
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Correlation-immunity of nonlinear combining functions for cryptographic applications (Corresp.)
IEEE Transactions on Information Theory
Clock-controlled shift registers: a review
IEEE Journal on Selected Areas in Communications
Encryption System with Variable Number of Registers
Computers and Electrical Engineering
Performance evaluation of highly efficient techniques for software implementation of LFSR
Computers and Electrical Engineering
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Linear feedback shift register (LFSR) based stream ciphers are popular because of their low hardware implementation costs. The nonlinear combination generators and clock-controlled generators are two very commonly used schemes in LFSR based stream ciphers. FPGA implementation of these two schemes has been done to obtain an idea about the hardware complexity of the two schemes. The fast correlation attack and edit distance attack, which are the fastest of the reported attacks on the nonlinear combination generators and clock-controlled generators respectively, have been implemented. A new model for LFSR based keystream generation has been proposed by combining the two existing schemes. The proposed model is based on the detailed comparative study and cryptanalysis of the two existing schemes mentioned.