• Description:
  To enhance the security of data, TripleDES (3DES) applies the DES algorithm three times using two or three unique 56-bit keys, resulting in an effective key length of 112 or 168 bits. The encryption process involves three stages: encrypting with the first key (Key1), decrypting with the second key (Key2), and encrypting again with the third key (Key3). In Java, the Cipher class supports TripleDES using the "DESede" algorithm.
  A SecretKey object manages the keys, which are typically generated with KeyGenerator. The Cipher must be initialized in ENCRYPT_MODE or DECRYPT_MODE to perform the desired operation. To handle files securely, CipherOutputStream and CipherInputStream provide encrypted or decrypted data streams. Effective key management ensures strong security, while padding schemes like PKCS5Padding handle data alignment issues. It is crucial to manage exceptions such as InvalidKeyException and close file streams properly to ensure data integrity and prevent resource leaks.

• To start the encryption process, select the input file path after setting up the TripleDES encryption GUI.
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• The chosen file location is indicated by the selected file path that shows up in the text field.
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• Select the path of the 'Encrypt.txt' file to begin the encryption process.
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• The path of the 'Encrypt.txt' file has been selected for encryption.
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• The files Encrypt.txt and input.txt are chosen. When the Encrypt button is clicked, encryption is successfully finished.
• The encrypt method reads the plaintext from the input file, encrypts it using Triple DES (DESede) with the provided serverSecretKey, and saves the encrypted data to the output file. It handles exceptions and prints a success message upon successful encryption.
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• To start the decryption process, select the input file path after setting up the TripleDES decryption GUI.
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• The chosen file location is indicated by the selected file path that shows up in the text field.
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• Select the path of the 'Decrypt.txt' file to begin the decryption process.
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• The path of the 'Decrypt.txt' file has been selected for decryption.
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• The files Encrypt.txt and Decrypt.txt are chosen. When the Decrypt button is clicked, decryption is successfully finished.
• The decrypt method uses Triple DES (DESede) to decrypt data from an encrypted file. It initializes a Cipher in decryption mode with the provided secret key and decrypts the byte array read from the input file. Finally, it writes the decrypted data to the specified output file, handling any exceptions that might occur.
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• Use the same secret key for both encryption and decryption to maintain consistency and ensure accurate data retrieval.
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• Encryption applies to the input text file, with the result saved in the encrypt text file. Decryption restores the original content from the decrypt text file.
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