Performance Analysis of Two Famous Cryptographic Algorithms on Mixed Data

The rapid development of digital data sharing has made information security a crucial concern in data communication. The information security system heavily relies on encryption methods. These algorithms employ strategies to increase data secrecy and privacy by obscuring the information, which only those parties who have the accompanying key can decode or decrypt. Nevertheless, these methods also use a lot of computational resources, including battery life, memory, and CPU time. So, to determine the optimal algorithm to utilize moving forward, it is necessary to assess the performance of various cryptographic algorithms. Therefore, this study evaluates two well-known cryptographies (RSA and ElGamal) using mixed data such as binary, text, and image files. CPU internal clock was used to obtain the time complexity used by both algorithms during encryption and decryption. The algorithms used CPU internal memory to obtain memory usage during the encryption and decryption of mixed data. Evaluation criteria such as encryption time, decryption time, and throughput were used to compare these encryption algorithms. The response time, confidentiality, bandwidth, and integrity are all factors in the cryptography approach. The results revealed that RSA is a time-efficient and resourceful model, while the ElGamal algorithm is a memory-efficient and resourceful model.