Data Protection Using Caesar Cipher on Android Smartphone Agus Setiawan (a*), Egie Hermawan (a), Silvester Dian Handy Permana (a)
a) Program Studi Teknik Informatika, Universitas Trilogi
Jl. TMP Kalibata No.1, Jakarta 12760, Indonesia
*agus.setiawan[at]trilogi.ac.id
Abstract
In todays digital-based era, technological advancements and developments have a great impact on daily activities. Data or information become an important aspect of life. And data can also be misused as a tool to commit a crime. That is why we need a tool to secure and protect that data. Data security techniques are very diverse, one of which uses a computerized system, usually the technique uses an application to protect the data. One solution to this problem is to encrypt the text of the message, one technique that can be used is the Ceasar Chiper cryptographic technique. In the implementation of the text in the message will be exchanged with a character that corresponds to the key entered by the user, plaintext characters will be processed with characters from the key with the same index to produce new characters. This research offers an android application that can make it easy for users to find out what cryptography, encryption, and so on. This application provides some educational guides for learning cryptography, from history, how to encrypt and decrypt itself, so that users can try to make a secret message using the specified key, which will be sent to friends and relatives, and will be decrypted using the application itself.
Keywords: cryptography, caesar cipher, data protection
