RANCANG BANGUN APLIKASI ENKRIPSI DAN DEKRIPSI MENGGUNAKAN ALGORITMA RC4 PADA SISTEM OPERASI ANDROID; THE DEVELOPMENT OF ENCRYPTION AND DECRYPTION APPLICATION USING RC4 ALGORITHM ON ANDROID OPERATING SYSTEM

Kara, Septa Bagas, Reza M.I. Pulungan

2015 | Skripsi | FMIPA UGM

Smartphone and internet are continuosly developed. One of the most frequently used technologies is Android. It results in the rise of information that is needed by people. One way to share information is by texting. Previously people used SMS (Short Message Service) to text. Due to the development of smartphone and internet, people turn to use messenger application that is more attractive and easy than SMS. Therefore, the use of SMS is decreased. However messenger application still lacks of security for the message content. It cannot guarantee the secret of the message content. To secure the message content, cryptography can be applied on Android. This research establishes an encryption and decryption which applies RC4 algorithm. The RC4 algorithm is one of the symmetric-key algorithms designed by RSA data security Inc. (RSADSI) in a form of a stream chipper. The result shows that the application has secured the message content by using encryption on the text of a certain message.

Kata Kunci : Android; Cryptography; RC4; encryption; decryption; Stream Chipper