SYMMETRIC BLOCK ENCRYPTION ALGORITHMS AND METHODS FOR THEIR EVALUATION
Keywords:
Symmetric encryption, block ciphers, AES, DES, Blowfish, cryptanalysis, performance evaluation, avalanche effect, cryptographic securityAbstract
Symmetric block encryption algorithms are fundamental to modern cryptography, enabling secure communication and data protection. These algorithms encrypt fixed-size blocks of plaintext into ciphertext using a shared secret key. With growing concerns about cybersecurity threats and performance demands, it is essential to evaluate encryption algorithms not only for security but also for efficiency and resistance to cryptanalysis. This paper provides an overview of major symmetric block ciphers, including DES, AES, and Blowfish, and explores various evaluation techniques, such as statistical analysis, performance benchmarking, and cryptanalysis. The results highlight the strengths and weaknesses of these algorithms in terms of security, computational efficiency, and suitability for different applications.
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