Improving the security guarantees, authenticity and confidentiality in short message service of mobile applications

摘要

The advancement in telecommunications technology has allowed people to communicate in various ways, one of them is using mobile phone device. However, security issues such as authenticity and confidentiality of data or information are still cannot be guaranteed. Messages delivered through SMS can be easily stolen by unauthorized parties because SMS sent via BTS will be accepted by Message Service Center (SMSC), where the operator can view the message contents. There are 2 main features that specify and differentiate between RSA and RC6, they are the Time Consumed for Encryption & Decryption message and the Ability to protect the data from unauthorized parties. This study begins with a comparative analysis of performance and security of the most useful algorithms: RC6 (Rivest Cipher) and RSA (Rivest Shamir and Adleman), then the complexity of encryption and decryption algorithms to obtain better algorithms are discussed. As proof of concept, a prototype for encryption and decryption of SMS was developed based on Android platform. The result of this study shows that all messages can bee encrypted using a key generated before being sent to the receiver which has better security and time performance.