How to Ensure Successful Encryption and Decryption with 3DES in Java?

How to Encrypt and Decrypt Text Using 3DES in Java

When encrypting and decrypting text using the Triple DES (3DES) algorithm in Java, verifying the accuracy of the process is crucial. If you encounter issues where the decrypted text does not match the original string, it's likely due to minor errors in the code. Here is a concise solution that ensures both encryption and decryption work as expected:

The code below uses Message Digest 5 (MD5) for key generation and initializes the Cipher object with specific algorithm parameters:

public static void main(String[] args) throws Exception {
    String text = "kyle boon";

    byte[] codedtext = new TripleDESTest().encrypt(text);
    String decodedtext = new TripleDESTest().decrypt(codedtext);

    System.out.println(decodedtext); // Prints "kyle boon"
}

public byte[] encrypt(String message) throws Exception {
    // Generate key bytes using MD5 digest
    MessageDigest md = MessageDigest.getInstance("md5");
    byte[] digestOfPassword = md.digest("HG58YZ3CR9".getBytes("utf-8"));
    byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
    for (int j = 0, k = 16; j <pre class="brush:php;toolbar:false">public String decrypt(byte[] message) throws Exception {
    // Generate key bytes using MD5 digest
    MessageDigest md = MessageDigest.getInstance("md5");
    byte[] digestOfPassword = md.digest("HG58YZ3CR9".getBytes("utf-8"));
    byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
    for (int j = 0, k = 16; j <p>Ensure that the key used for encryption matches the key used for decryption. Verify that the input string is accurately encrypted and decrypted by comparing it to the original string. If you follow these guidelines, you should be able to successfully encrypt and decrypt text using 3DES in Java.</p>

The above is the detailed content of How to Ensure Successful Encryption and Decryption with 3DES in Java?. For more information, please follow other related articles on the PHP Chinese website!