Analysis and design of stream ciphers
Analysis and design of stream ciphers
Generalized Inversion Attack on Nonlinear Filter Generators
IEEE Transactions on Computers
Contemporary Cryptology: The Science of Information Integrity
Contemporary Cryptology: The Science of Information Integrity
On the Security of Nonlinear Filter Generators
Proceedings of the Third International Workshop on Fast Software Encryption
LFSR based stream ciphers are vulnerable to power attacks
INDOCRYPT'07 Proceedings of the cryptology 8th international conference on Progress in cryptology
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The nonlinear feedforward generator is one of the commonly used building blocks of stream ciphers. This paper describes a novel known-plaintext attack for cryptanalyzing nonlinear feedforward generator. The plaintext requirement of the attack is only twice the length of the shift register. The implementation of this attack could identify the initial settings of the system for a 128 stage register and randomly chosen nonlinear feedforward function of 10 variables in few minutes on a P-II 300 MHz machine.