Text Encryption in Android Chat Applications using Elliptical Curve Cryptography (ECC)

摘要

Information technology is an important aspect of human life that has provided comfort and ease in communicating. The most used communication technologies today is the smartphone, which is a mobile phone with the ability of a portable computer. Currently, to communicate each other, people feel more convenience using chat application in a smartphone than calling or short message services (SMS) features. Some of the advantages of chat application are there is no message size limitations, highest number of consumers use it; especially younger demographics,and it also works on mobile web without application download. Due to the convenience of communication using chat apps increases, the security demands are also higher, i.e., a proper cryptography scheme is needed to protect the messages. In this paper, we implement ECC algorithm to secure text message in messaging application of a smartphone. We will adopt the method proposed by Singh1to create a chat application in Android program that equipped end-to-end encryption. We also give the experimental result of our chat apps performance such as the accuracy of the received text message, average encryption and decryption time.