需要这方面的建议，因为我仍然无法在 java 中成功加密/解密图像。对于用户解密图像，用户必须单击图像并输入图像密码，类似于受密码保护的文本文件或pdf文件。
下面是java中加密图像的函数
public static void ImgEncrypt()throws Exception{
// Scanner to read the user's password. The Java cryptography
// architecture points out that strong passwords in strings is a
// bad idea, but we'll let it go for this assignment.
Scanner scanner = new Scanner(System.in);
// Arbitrary salt data, used to make guessing attacks against the
// password more difficult to pull off.
byte[] salt = { (byte) 0xc7, (byte) 0x73, (byte) 0x21, (byte) 0x8c,
(byte) 0x7e, (byte) 0xc8, (byte) 0xee, (byte) 0x99 };
{
File inputFile = new File("C:/rose.jpg");
BufferedImage input = ImageIO.read(inputFile);
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
// Get a password from the user.
System.out.print("Password: ");
System.out.flush();
PBEKeySpec pbeKeySpec = new PBEKeySpec(scanner.nextLine().toCharArray());
// Set up other parameters to be used by the password-based
// encryption.
PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20);
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
// Make a PBE Cyhper object and initialize it to encrypt using
// the given password.
Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
pbeCipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParamSpec);
FileOutputStream output = new FileOutputStream("C:/output.jpg");
CipherOutputStream cos = new CipherOutputStream(
output, pbeCipher);
//File outputFile = new File("image.png");
ImageIO.write(input,"JPG",cos);
cos.close();
}
}