Today‘s world has witnessed the buildup of information through social media like Twitter and Facebook, that are growing hugely day by day. Victimization these social media, users tweet or post on several topics from anywhere within the world through the net. Tweets area unit accustomed analyze positive and negative messages to drive polarity scores and additionally to predict future trends. These polarity scores might be extracted from Twitter, albeit polarity score knowledge area unit placed underneath security. The information will be simply hacked, and dynamical the score results will cause immeasurable problems, like touching the worldwide economic standing, company brands, and therefore the reputations of companies. To tackle these problems, Daniel Bernstein planned to the implementation of Salsa, that has quicker encryption because of the district round with better data security. In the current work, a novel methodology is proposed by modifying the Salsa20/4 to further enhance the security of the polarity scores, which is an important requirement of the current world. The proposed methodology has two stages. The first stage has secret key. The second stage is prime number secret key in N“1 steps which are interchange the secret key value and prime number value. The proposed methodology has good security while to comparing to Salsa20/4 methodology. © 2020 Elsevier B.V., All rights reserved.