AES加密

import javax.crypto.Cipher;  
import javax.crypto.spec.IvParameterSpec;  
import javax.crypto.spec.SecretKeySpec;  
import java.util.Base64;  
  
public class AESUtil {  
  
    private static final String ALGORITHM = "AES";  
    private static final String TRANSFORMATION = "AES/CBC/PKCS5Padding";  
    private static final String ENCODING = "UTF-8";  
  
    /**  
     * aes-cbc128加密 加密数据  
     * @param data 要加密的数据  
     * @param key 密钥  
     * @param iv 向量  
     * @return 加密后的数据  
     * @throws Exception  
     */    public static String encrypt(String data, String key, String iv) throws Exception {  
        Cipher cipher = Cipher.getInstance(TRANSFORMATION);  
        SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(ENCODING), ALGORITHM);  
        IvParameterSpec ivParameterSpec = new IvParameterSpec(iv.getBytes(ENCODING));  
        cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec);  
        byte[] encryptedBytes = cipher.doFinal(data.getBytes(ENCODING));  
        return Base64.getEncoder().encodeToString(encryptedBytes);  
    }  
  
    /**  
     * aes-cbc128加密 解密数据  
     * @param encryptedData 要解密的数据  
     * @param key 密钥  
     * @param iv 向量  
     * @return 解密后的数据  
     * @throws Exception  
     */    public static String decrypt(String encryptedData, String key, String iv) throws Exception {  
        Cipher cipher = Cipher.getInstance(TRANSFORMATION);  
        SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(ENCODING), ALGORITHM);  
        IvParameterSpec ivParameterSpec = new IvParameterSpec(iv.getBytes(ENCODING));  
        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParameterSpec);  
        byte[] decodedBytes = Base64.getDecoder().decode(encryptedData);  
        byte[] decryptedBytes = cipher.doFinal(decodedBytes);  
        return new String(decryptedBytes, ENCODING);  
    }  
    }