This Android application facilitates the encryption and decryption of student names using the Caesar Cipher encryption algorithm. Upon launching the app, users are presented with a user-friendly interface where they can input student names. After entering the names, they can click the "Encrypt Names" button, which encrypts each name using a simple Caesar Cipher with a fixed shift value of 3. The encrypted names are then displayed alongside the original names in a ListView.
To ensure data persistence, the encrypted names are stored using SharedPreferences. This enables the app to remember the encrypted names even after the user closes the application. Additionally, a "Clear All Names" button is provided to allow users to delete all encrypted names from the list and SharedPreferences.
Moreover, the app includes a feature that allows users to navigate to a separate activity for decrypting names. In this DecryptActivity, users can input an encrypted name and click the "Decrypt Name" button to reveal the original name. The decryption process involves reversing the Caesar Cipher algorithm by shifting each character back by the same amount.
The application is designed to be intuitive and user-friendly, catering to users who need a simple tool for encrypting and decrypting student names. Whether for educational purposes or personal use, this app provides a convenient solution for securely managing student data. With its straightforward interface and efficient encryption mechanism, it offers a seamless experience for users seeking to protect sensitive information while ensuring accessibility and ease of use.