Comparative Study of Cryptographic Algorithms

Scientific and Practical Cyber Security Journal

Nyagathu Gichuki¹  Mohanad Abdulhamid⁴ 

[1] Iraq;Kenya;University of Nairobi;AL-Hikma University

关键词: Cryptographic algorithms;    RSA;    DES;   

DOI  :  

学科分类：数学（综合）

来源: Scientific Cyber Security Association

【 摘 要 】

This paper presents a comparative study of two cryptosystems, Data Encryption Standard (DES) and the Rivest-Shamir-Adleman (RSA) schemes. DES is a symmetric (or private) key cipher. This means that the same key is used for encryption and decryption. RSA, on the other hand, is an asymmetric (or public) key cipher, meaning that two keys are used, one for encryption and the other for decryption. The objective of this paper is to implement these two schemes in software. The program is written in the Java™ language. It generates a key from a passphrase given by the user, encrypts and decrypts a message using the same key, for the case of DES. In RSA, decryption is done by computing the decryption key from the encryption key. Finally, the program returns the time taken to encrypt and decrypt a message.

【 授权许可】

CC BY-NC-ND