Comparing Symmetric and Asymmetric cryptography in message encryption and decryption by using AES and RSA algorithms

Abstract

One of the common problems of sharing resources over a data communication network is security. Generally sharing information's and resources over a network between a huge number of users is important especially in computer science and engineering field, and this becomes a critical problem for data security. Nowadays many algorithms used for encryption and decryption of data. Cryptography algorithms are divided into symmetric and asymmetric algorithms based on the key used between the sender and receiver of the pieces of information. this paper provides a comparison between symmetric and asymmetric algorithms by using two common algorithms such as AES and RSA. The comparison process focused on the execution time for encrypting and decrypting message of various word length.

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“…The higher the entropy value, the more difficult it is for third parties to deduce or access the encrypted data or keys. Formula for entropy as illustrated in (3).…”

“…In spite of the fact that advances in information technology continue to increase the complexity of managing with progressively advanced cyber dangers, they open up many opportunities for advancement [1], [2]. Cryptography [3]- [6] could be a field that examines scientific strategies related to the angles of information and data security, such as information reliability and authentication. Cryptography studies how communication is carried out so that individuals as it are have the correct to use or access the data sent and depends intensely on numerical theory and computer applications [7].…”