AES Archives - Page 4 of 4

What is the role of Galois Fields in the implementation of the AES block cipher cryptosystem?

Thursday, 03 August 2023 by EITCA Academy

Galois Fields, also known as finite fields, play a important role in the implementation of the Advanced Encryption Standard (AES) block cipher cryptosystem. The AES algorithm relies heavily on Galois Fields for its key operations, such as substitution, permutation, and mixing of data. By understanding the concept of Galois Fields and their application in AES,

Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, AES block cipher cryptosystem, Introduction to Galois Fields for the AES, Examination review

Tagged under: AES, Cryptography, Cybersecurity, Finite Fields, Galois Fields, Key Expansion

Why has DES been replaced by more secure encryption algorithms in modern applications?

Thursday, 03 August 2023 by EITCA Academy

The Data Encryption Standard (DES) is a block cipher cryptosystem that was widely used in the past for secure communication and data protection. However, DES has been replaced by more secure encryption algorithms in modern applications due to several reasons. One of the main reasons for the replacement of DES is its key size. DES

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: AES, Brute-Force Attacks, Cryptography, Cybersecurity, Data Security, Encryption

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What is the role of Galois Fields in the implementation of the AES block cipher cryptosystem?

Why has DES been replaced by more secure encryption algorithms in modern applications?