Encryption is the process of encoding messages in order to prevent unauthorized parties from reading them. The

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Encryption is the process of encoding messages in order to prevent unauthorized parties from reading them. The reverse operation is decryption which aims to restore the original messages. The Caesar cipher is a simple encryption algorithm that replaces each letter in a message with a letter further along in the alphabet. The key is the number of letters you shift. For example, if the original message was “welcome” and the key is one, the encrypted message will be “xfmdpnf ”. Write an application to encrypt and decrypt text files. Your application should use a GUI to interact with the user. It should use JTextFields for the input file, the output file, the key, an “Encrypt’’ button and a “Decrypt” button. Your program should read files from, and save files in, the same folder as the application.

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Java How To Program Late Objects Version

ISBN: 9780136123712

8th Edition

Authors: Paul Deitel, Deitel & Associates

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