%0 Thesis
%9 Skripsi
%A CINCIN JATI SUDARMINTO,  NIM. 10651008
%B FAKULTAS SAINS DAN TEKNOLOGI
%D 2014
%F digilib:13302
%I UIN SUNAN KALIJAGA
%K Keywords: Android, Encryption, Description, Short Message Service (SMS),  Security, Caesar Cipher, RC4.        
%T RANCANG BANGUN APLIKASI ENKRIPSI  SHORT MESSAGE SERVICE (SMS) MENGGUNAKAN  ALGORITMA CAESAR CIPHER DAN ALGORITMA RC4  BERBASIS ANDROID    
%U https://digilib.uin-suka.ac.id/id/eprint/13302/
%X The technology on cellular phone keeps changing through times. The old  function of cellular phone is limited on making phone calls and sending message,  SMS (short message services). Nowadays, cellular phone can be used more than  just calling and sending message. Further function of cellular phone is for  chatting, browsing, video call, etc. However, SMS is still a service which is  favorable for many users. There are lots of users of SMS, though it does not mean  that SMS is the best service of cellular phone services. SMS has some weaknesses  one of it is from the security of the content. It is because SMS has not been  equipped with the system that can guarantee the secret of the SMS content. This  research will try to make an application which is able to safe the content of SMS  by using encryption which is used Caesar Cipher algorithm and RC4 algorithm.  The system developmental method which is used in this research is SDLC  (Software Development Life Cycle). There are five steps in this method: analysis,  design, implementation, testing and maintenance. While, the algorithm which is  used for the encryption is Caesar Cipher algorithm and RC4 algorithm. Caesar  Cipher algorithm is used to encrypt the plaintext by moving the position of the  letter. The RC4 algorithm is used to encrypt plaintext digit per digit or byte per  byte by combining with the operation or with a keystream.  The outcome of this research is resulting an application which is able to safe  the content of SMS by using encryption with Caesar Cipher algorithm and RC4  algorithm on android based cellular phone. Based on functional application test  result all respondents agree that the application which is made work perfectly. It is  recorded that 100% said yes and 0% said no. Based on interface application test  result, 48,3% strongly agree, 45% agree, 6,7% neutral, 0% disagree and 0%  strongly disagree.    
%Z Pembimbing :  Bambang Sugiantoro