java decrypt CryptoJS

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java decrypt CryptoJS

In Java, you can use the javax.crypto package to decrypt a string that was encrypted using the CryptoJS library.

To decrypt a string in Java, you will need to know the encryption algorithm and key that were used to encrypt the string, as well as the initialization vector (IV) if it was used.

Here is an example of how to decrypt a string in Java using the AES algorithm and the CBC mode:

import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;

public class Main {
  public static void main(String[] args) throws Exception {
    // Set the encryption algorithm and key
    String algorithm = "AES";
    byte[] keyBytes = "my_secret_key".getBytes("UTF-8");
    Key key = new SecretKeySpec(keyBytes, algorithm);

    // Set the initialization vector
    byte[] ivBytes = "my_iv_vector".getBytes("UTF-8");
    IvParameterSpec iv = new IvParameterSpec(ivBytes);

    // Set the cipher mode
    String mode = "CBC";
    Cipher cipher = Cipher.getInstance(algorithm + "/" + mode + "/PKCS5Padding");

    // Initialize the cipher for decryption
    cipher.init(Cipher.DECRYPT_MODE, key, iv);

    // Decrypt the encrypted string
    String encryptedString = "encrypted_string_from_cryptojs";
    byte[] encryptedBytes = Base64.decodeBase64(encryptedString);
    byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
Created Time:2017-11-03 00:14:53  Author:lautturi