Can a field be considered as a set of numbers in which one can add, subtract and multiple but not divide?
Monday, 11 September 2023
by Silvio Pereira
In the field of cybersecurity, particularly in classical cryptography, understanding the concept of fields is important for comprehending the inner workings of cryptographic algorithms such as the AES block cipher cryptosystem. While the assertion that the field be considered as a set of numbers in which one can add, subtract and multiple but not divide
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, AES block cipher cryptosystem, Introduction to Galois Fields for the AES
Tagged under:
AES, Cybersecurity, Finite Field, Galois Fields, Irreducible Polynomial, Multiplication, XOR Operation
How does the XOR operation enhance the security of the DES encryption process?
Thursday, 03 August 2023
by EITCA Academy
The XOR operation, also known as exclusive or, plays a important role in enhancing the security of the Data Encryption Standard (DES) encryption process. DES is a widely used block cipher cryptosystem that employs a combination of substitution and permutation operations to encrypt data. XOR is utilized within DES to introduce confusion and diffusion, which