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Performance Evaluation of Symmetric Data Encryption Algorithms: AES and Blowfish

2019; Volume: 04; Issue: 10 Linguagem: Inglês

10.36348/sjeat.2019.v04i10.002

2415-6272

Bello Alhaji Buhari, Afolayan Ayodele Obiniyi, Kissinger Sunday, Sirajo Shehu,

Chaos-based Image/Signal Encryption

People are transferring large amount of data that are critical and consume large amount of time through the Internet such as email, banking transaction and online purchase.But due to high exposure they are susceptible to being heavily attacked or become attractive targets for attackers.This can be solved by using a modern phenomenon called symmetric encryption.Symmetric encryption is used to ensure that information is hidden from anyone for whom it is not intended.This research conducted a performance evaluation of symmetric data encryption algorithms namely Advanced Encryption Standard (AES) and Blowfish.The evaluation is done for four different data types: image data type, audio data types, video data types and textual file data types.The performance evaluation metrics are encryption time and throughput.The prototype is developed using JAVA, compiled using the Netbeans IDE7.1.2with default settings in jdk 7.1 development kit.Results obtained from this evaluation indicated that blowfish is more efficient than AES.But for Blowfish the encryption time sometime decreases with the increase in data size.This can be attributed to the fact that Blowfish uses 126, 192 or 256 key sizes.