Text Encryption and Decryption in Java: Source Code

Learn how to implement text encryption and decryption in Java with source code examples. Encrypt and decrypt sensitive information securely using Java programming language.
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Text encryption and decryption are crucial techniques in the field of information security, allowing sensitive data to be securely transmitted and stored. In Java, implementing encryption and decryption functionality can be accomplished using libraries like Java Cryptography Architecture (JCA) and Java Cryptography Extension (JCE). Below is a simple example demonstrating how to perform text encryption and decryption in Java.

First, let's look at how to encrypt text:

[[See Video to Reveal this Text or Code Snippet]]

In the above code, we first generate a secret key using the AES algorithm. Then, we initialize a Cipher instance for encryption using this secret key. After that, we encrypt the plaintext using the doFinal method of the cipher and convert the encrypted byte array to a Base64 encoded string for easier transmission and storage.

Next, let's see how to decrypt the encrypted text:

[[See Video to Reveal this Text or Code Snippet]]

In the decryption code, we first decode the Base64 encoded string back to a byte array. We then recreate the secret key used for encryption and initialize a Cipher instance for decryption. After that, we decrypt the encrypted text using the doFinal method and obtain the original plaintext.

Remember to handle exceptions appropriately and securely manage your secret keys to ensure the confidentiality of your encrypted data.