COMPARATIVE ANALYSIS OF ENCRYPTION AND DECRYPTION SPEED OF AES AND BLOWFISH ALGORITHMS ON VARIOUS FILE SIZES
Keywords:
Cryptography, AES, Blowfish, Encryption Speed, Decryption SpeedAbstract
Information security has become a critical issue in the digital era due to the rapid growth of data exchange and storage across various platforms. Cryptographic algorithms play a vital role in protecting data confidentiality, integrity, and availability. Among symmetric key cryptography algorithms, Advanced Encryption Standard (AES) and Blowfish are widely used due to their efficiency and strong security characteristics. This study aims to conduct a comparative analysis of encryption and decryption speed between AES and Blowfish algorithms when applied to various file sizes. The research adopts a quantitative descriptive approach by measuring processing time during encryption and decryption processes on files of different sizes, ranging from small to large data volumes. The experiment is conducted in a controlled computing environment to ensure consistent hardware and software conditions. The results indicate that AES generally demonstrates faster encryption and decryption performance compared to Blowfish, particularly for large file sizes, due to its optimized block size and efficient key schedule. However, Blowfish shows competitive performance for smaller files and remains a viable alternative in certain use cases. This study also discusses the implications of algorithm selection based on file size, performance requirements, and system constraints. The findings contribute to a better understanding of cryptographic algorithm performance and provide practical insights for developers, researchers, and organizations in selecting appropriate encryption methods for data security
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Copyright (c) 2026 Ridho Fadlan Fahira Siregar, Novlianun Dly, Widiya Widiya, Suci Wulandari, Putri Kurni Wati, Nelly Agustina Siregar, Ibnu Rusydi (Author)
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
