存储身份证正反面，认证文件等用的工具类，存储在oss中是不可以直接查看的图片文件，需要经过解密才行

import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
public class ImageEncryptionExample {public static void main(String[] args) {String originalImagePath = "E:\\1.jpg";String encryptedImagePath = "E:\\2.jpg";String decryptedImagePath = "E:\\3.jpg";String key = "WxappEncrypteKey"; // 密钥，必须是16个字符长度的字符串try {// 读取原始图片byte[] originalImageBytes = Files.readAllBytes(Paths.get(originalImagePath));// 加密图片byte[] encryptedImageBytes = encrypt(originalImageBytes, key);// 将加密后的图片保存到文件Files.write(Paths.get(encryptedImagePath), encryptedImageBytes);// 读取加密后的图片byte[] encryptedImageBytesFromFile = Files.readAllBytes(Paths.get(encryptedImagePath));// 解密图片byte[] decryptedImageBytes = decrypt(encryptedImageBytesFromFile, key);// 将解密后的图片保存到文件Files.write(Paths.get(decryptedImagePath), decryptedImageBytes);System.out.println("图片加密解密完成！");} catch (IOException | NoSuchAlgorithmException | NoSuchPaddingException |InvalidKeyException | IllegalBlockSizeException | BadPaddingException e) {e.printStackTrace();}}private static byte[] encrypt(byte[] input, String key) throws NoSuchAlgorithmException,NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {SecretKey secretKey = new SecretKeySpec(key.getBytes(), "AES");Cipher cipher = Cipher.getInstance("AES");cipher.init(Cipher.ENCRYPT_MODE, secretKey);return cipher.doFinal(input);}private static byte[] decrypt(byte[] input, String key) throws NoSuchAlgorithmException,NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {SecretKey secretKey = new SecretKeySpec(key.getBytes(), "AES");Cipher cipher = Cipher.getInstance("AES");cipher.init(Cipher.DECRYPT_MODE, secretKey);return cipher.doFinal(input);}
}