Muhammad Younis Bhatti, Aisha Samejo , Shahid Danwar. “A Review Of Security Levels Of Data Encryption Algorithms”. International Journal of Computer Science and Emerging Technologies 3, no. 1 (February 10, 2020). Accessed December 1, 2021. http://ijcet.salu.edu.pk/index.php/IJCET/article/view/38.