Which bits of the key are used for parity checking in DES?
Thursday, 08 May 2025
by Theresa Sittel
The Data Encryption Standard (DES) is a symmetric-key block cipher that was once a widely used method for data encryption. It operates on 64-bit blocks and uses a 56-bit key for encryption and decryption processes. One of the lesser-known aspects of DES is the inclusion of parity bits within its key structure, which are used
What is lsfr
Saturday, 10 August 2024
by Emmanuel Udofia
A Linear Feedback Shift Register (LFSR) is a key component in the realm of stream ciphers within classical cryptography. It is a shift register whose input bit is a linear function of its previous state. The most commonly used linear function in LFSRs is the exclusive-or (XOR). LFSRs are widely utilized in various applications, including
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, Stream ciphers, Stream ciphers and linear feedback shift registers
Tagged under:
Cryptography, Cybersecurity, Error Detection, LFSR, Pseudo-Random Number Generation, Stream Ciphers