International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Information security has been very important issue in data communication. Any loss or threat to information can prove to be great loss to the organization. Encryption technique plays a main role in information security systems. This paper provides a fair comparison between four most common and used symmetric key algorithms: DES, 3DES, AES and Blowfish. A comparison has been made on the basis of these parameters: rounds block size, key size, and encryption/decryption time, CPU process time in the form of throughput and power consumption. These results show that blowfish is better than other algorithm.