Today’s world has watched the accumulated of data through social media such has Facebook and Twitter, that are increased enormously day by day. Using these social media, user post or tweet on many topics from anywhere within the world through the web. This social media analysed data need security, and also available more algorithm like AES, DES, Salsa, and etc… In In this paper, discuss two existing algorithm such has AES and Salsa and proposed RB20 method by modifying the Salsa. The proposed method has five processes. The first process is identifying the prime number in the given matrix. The second process is to find a perfect numbers. The third process is to merge all perfect numbers into a single row. The fourth process is to form a pair from left to right side from third process. The fifth process is to swap the cell values with the help of pair from given matrix. The proposed method calculate the time and compared with both AES and Salsa.The proposed method has very good security while compare to both existing algorithms. © 2021 Elsevier B.V., All rights reserved.