How does the key schedule in DES generate the subkeys used in each round of encryption and decryption?
Thursday, 03 August 2023
by EITCA Academy
The Data Encryption Standard (DES) is a symmetric block cipher cryptosystem that operates on 64-bit blocks of data. The key schedule in DES is responsible for generating the subkeys used in each round of encryption and decryption. The key schedule takes the original 64-bit key and produces 16 round subkeys, each consisting of 48 bits.
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, DES block cipher cryptosystem, Data Encryption Standard (DES) - Key schedule and decryption, Examination review
Tagged under:
Cybersecurity, Data Encryption Standard, Decryption, DES, Encryption, Key Schedule, Subkeys