Symmetric Block Cipher Archives

Explain the significance of the key size and the number of rounds in AES, and how they impact the level of security provided by the algorithm.

Thursday, 03 August 2023 by EITCA Academy

The Advanced Encryption Standard (AES) is a widely-used symmetric block cipher that provides secure encryption for various applications. The security of AES is influenced by two key factors: the key size and the number of rounds. The key size in AES refers to the length of the secret key used for encryption and decryption. AES

Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, AES block cipher cryptosystem, Advanced Encryption Standard (AES), Examination review

Tagged under: Advanced Encryption Standard, AES, Brute-force Attack, Confusion, Cryptographic Attacks, Cybersecurity, Decryption, Differential Cryptanalysis, Diffusion, Encryption, Key Size, Linear Cryptanalysis, Number Of Rounds, Security, Substitution-permutation Network, Symmetric Block Cipher

What are the main operations performed during each round of the AES algorithm, and how do they contribute to the overall security of the encryption process?

Thursday, 03 August 2023 by EITCA Academy

The Advanced Encryption Standard (AES) is a widely used symmetric block cipher algorithm that plays a important role in ensuring the security of encrypted data. During each round of the AES algorithm, several operations are performed, each serving a specific purpose in enhancing the overall security of the encryption process. The AES algorithm operates on

Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, AES block cipher cryptosystem, Advanced Encryption Standard (AES), Examination review

Tagged under: AddRoundKey, Advanced Encryption Standard, AES, Confusion, Cybersecurity, Diffusion, Key Schedule Algorithm, MixColumns, ShiftRows, SubBytes, Symmetric Block Cipher

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Explain the significance of the key size and the number of rounds in AES, and how they impact the level of security provided by the algorithm.

What are the main operations performed during each round of the AES algorithm, and how do they contribute to the overall security of the encryption process?