The present world is data world; without this data cannot survive in present stage. This data produced more from social media; This media data is public data; This public data did not have well security; so we applying the Salsa method. This method easily hack the data from the hackers. RBJ31 method has 4 steps. 1. Applying the secret key and multiply that key; 2. To apply the prime number and calculate the S 2and T 2 ; 3. To calculate the EA1 and EA2; 4. To swap the EA1 and EA2 in matrix EnA. The proposed method gives well security while comparing with Salsa method.