Does the GSM system implement its stream cipher using Linear Feedback Shift Registers?
Saturday, 20 April 2024
by Cyrille Romeo Kouadio
In the realm of classical cryptography, the GSM system, which stands for Global System for Mobile Communications, employs 11 Linear Feedback Shift Registers (LFSRs) interconnected to create a robust stream cipher. The primary objective of utilizing multiple LFSRs in conjunction is to enhance the security of the encryption mechanism by increasing the complexity and randomness
With an attack on a single LFSR is it possible to encounter combination of encrypted and decrypted part of the transmission of length 2m from which it is not possible to build solvable linear equations system?
Friday, 20 October 2023
by Ihor Halanyuk
In the field of classical cryptography, stream ciphers play a significant role in securing data transmission. One commonly used component in stream ciphers is the linear feedback shift register (LFSR), which generates a pseudorandom sequence of bits. However, it is important to analyze the security of stream ciphers to ensure that they are resistant to
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, Stream ciphers, Stream ciphers and linear feedback shift registers
Tagged under:
Cybersecurity, Keystream, Known-plaintext Attack, LFSR, Linear Equations System, Stream Cipher