Network security is becoming more and more crucial as the volume of data being exchanged on the internet increases. A more practical way to protect information is to alter it so that only an authorized receiver can understand it. Security of data and telecommunication can be done by a technique called cryptography. So the authors can say that cryptography is an effective way of protecting sensitive information by the way that prevents intruder from reading it. In this paper, they have developed a new cryptography algorithm which is based on symmetric key encryption method.