A Data Confidentiality Approach to Short Message Service (SMS) on Android

Short Message Service (SMS) is a text messaging service component ofmobile communication systems. It uses standardized communications protocols toexchange short text between mobile devices. SMS does not have any built-inprocedure to offer security for the text transmitted as data. Most of the applicationsfor mobile devices are designed and developed without taking security intoconsideration. As confidentiality is the original purpose of cryptology, the proposedsystem is introduced a data confidentiality approach to SMS on Android. It includesSMS network architecture as well as cryptographic protocols as theory backgroundand it also deals with design, implementation and confidentiality assessment of RC4stream cipher for SMS data confidentiality on mobile networks. In practical use, SMSmessages are not encrypted by default during transmission. To secure the message,the receiver needs to put password. In the thesis, RC4 stream cipher is implementedby using Key-Scheduling Algorithm (KSA) and Pseudo-Random GenerationAlgorithm (PRGA) in Java programming language