Java CBC Encryption Example

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Summary: Learn how to implement CBC (Cipher Block Chaining) encryption in Java with an example code snippet. Explore the basics of CBC encryption and understand how it works within the Java programming language.
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Cipher Block Chaining (CBC) encryption is a popular symmetric encryption mode that ensures confidentiality by chaining together blocks of plaintext before encryption. In Java, you can implement CBC encryption using libraries such as Java Cryptography Architecture (JCA). Below is an example of how to perform CBC encryption in Java:

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In this example, we first define the plaintext message, the secret key, and the initialization vector (IV). The key and IV must be kept secure and should be of appropriate length for the chosen encryption algorithm. Then, we use the encrypt() method to encrypt the plaintext and the decrypt() method to decrypt the ciphertext. Finally, we print out the encrypted and decrypted messages.

This example uses the AES encryption algorithm with a 128-bit key size and PKCS5Padding for padding. It's important to note that CBC mode requires an IV to be securely generated and shared between the encryption and decryption processes.

Feel free to use this example as a starting point for implementing CBC encryption in your Java applications.