public static string DecryptData(string password, string passwordSalt, string IV, string encryptedData)
{
byte[] cipherText = Convert.FromBase64String(encryptedData);
byte[] key = GetKey(password, passwordSalt);
string plaintext = null;
using (RijndaelManaged aes256 = new RijndaelManaged())
{
aes256.IV = Convert.FromBase64String(IV);
aes256.Key = key;
aes256.Padding = PaddingMode.PKCS7;
aes256.Mode = CipherMode.CBC;
ICryptoTransform decryptor = aes256.CreateDecryptor(aes256.Key, aes256.IV);
try
{
using (MemoryStream msDecrypt = new MemoryStream(cipherText))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
plaintext = srDecrypt.ReadToEnd();
}
}
}
}
catch (CryptographicException)
{
plaintext = null;
}
}
return plaintext;
}
private static byte[] GetKey(string password, string salt)
{
using (Rfc2898DeriveBytes pbkdf2 = new Rfc2898DeriveBytes(password, Convert.FromBase64String(salt), PBKDF2_ITERATIONS))
{
return pbkdf2.GetBytes(KEY_SIZE_BYTES);
}
}
请把c# 代码转化成JAVA代码。
引用chatGPT作答，以下转换后的代码:
import java.io.;
import java.security.;
import javax.crypto.;
import javax.crypto.spec.;
public class Example {
private static final int PBKDF2_ITERATIONS = 1000;
private static final int KEY_SIZE_BYTES = 32;
public static String decryptData(String password, String passwordSalt, String IV, String encryptedData) {
byte[] cipherText = Base64.getDecoder().decode(encryptedData);
byte[] key = getKey(password, passwordSalt);
String plaintext = null;
try {
Cipher aes256 = Cipher.getInstance("AES/CBC/PKCS5Padding");
aes256.init(Cipher.DECRYPT_MODE, new SecretKeySpec(key, "AES"), new IvParameterSpec(Base64.getDecoder().decode(IV)));
plaintext = new String(aes256.doFinal(cipherText), "UTF-8");
} catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
plaintext = null;
}
return plaintext;
}
private static byte[] getKey(String password, String salt) {
try {
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
KeySpec spec = new PBEKeySpec(password.toCharArray(), Base64.getDecoder().decode(salt), PBKDF2_ITERATIONS, KEY_SIZE_BYTES * 8);
SecretKey tmp = factory.generateSecret(spec);
return tmp.getEncoded();
} catch (NoSuchAlgorithmException | InvalidKeySpecException e) {
return null;
}
}
该回答引用chatgpt:
public static String decryptData(String password, String passwordSalt, String IV, String encryptedData) {
byte[] cipherText = Base64.getDecoder().decode(encryptedData);
byte[] key = getKey(password, passwordSalt);
String plaintext = null;
try {
Cipher aes256 = Cipher.getInstance("AES/CBC/PKCS5Padding");
SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
IvParameterSpec ivSpec = new IvParameterSpec(Base64.getDecoder().decode(IV));
aes256.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);
byte[] decryptedText = aes256.doFinal(cipherText);
plaintext = new String(decryptedText, StandardCharsets.UTF_8);
} catch (Exception e) {
plaintext = null;
}
return plaintext;
}
private static byte[] getKey(String password, String salt) {
try {
PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray(), Base64.getDecoder().decode(salt), PBKDF2_ITERATIONS, KEY_SIZE_BYTES * 8);
SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
SecretKey secretKey = secretKeyFactory.generateSecret(pbeKeySpec);
return secretKey.getEncoded();
} catch (Exception e) {
return null;
}
}
请注意，Java 中的加密方式与 C# 中有所不同，因此需要对代码进行修改以使其能够在 Java 中正常运行。在此代码中，我们使用了 Java 标准库中的 javax.crypto 包，其中的 Cipher 类用于执行加密和解密操作，SecretKeySpec 类用于在 AES 算法中设置密钥，IvParameterSpec 类用于设置初始化向量，PBEKeySpec 类用于使用 PBKDF2 密码哈希算法生成密钥，并使用 SecretKeyFactory 类生成 SecretKey 对象。
引用new bing部分指引作答：
以下是将C＃代码转换为Java代码的示例：
import javax.crypto.;
import javax.crypto.spec.;
import java.io.;
import java.security.;
public class CryptographyUtils {
private static final int PBKDF2_ITERATIONS = 1000;
private static final int KEY_SIZE_BYTES = 32;
public static String decryptData(String password, String passwordSalt, String IV, String encryptedData) {
byte[] cipherText = Base64.getDecoder().decode(encryptedData);
byte[] key = getKey(password, passwordSalt);
String plaintext = null;
try {
Cipher aes256 = Cipher.getInstance("AES/CBC/PKCS5Padding");
aes256.init(Cipher.DECRYPT_MODE, new SecretKeySpec(key, "AES"), new IvParameterSpec(Base64.getDecoder().decode(IV)));
try (ByteArrayInputStream bis = new ByteArrayInputStream(cipherText)) {
try (CipherInputStream cis = new CipherInputStream(bis, aes256)) {
try (InputStreamReader isr = new InputStreamReader(cis)) {
try (BufferedReader br = new BufferedReader(isr)) {
plaintext = br.readLine();
}
}
}
}
} catch (Exception ex) {
plaintext = null;
}
return plaintext;
}
private static byte[] getKey(String password, String salt) {
try {
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
KeySpec spec = new PBEKeySpec(password.toCharArray(), Base64.getDecoder().decode(salt), PBKDF2_ITERATIONS, KEY_SIZE_BYTES * 8);
SecretKey tmp = factory.generateSecret(spec);
return tmp.getEncoded();
} catch (Exception ex) {
return null;
}
}
}
此Java代码中使用了Java 8中的Base64 API替换了C＃代码中的Convert.FromBase64String方法。此外，Java使用IvParameterSpec而不是C＃中的byte数组来表示IV。最后，请注意Java代码中的异常处理和关闭流使用try-with-resources语句进行处理。
/// <summary>
/// 获取属性列表
/// </summary>
/// <typeparam name="T"></typeparam>
public static void GetObjectProperty<T>()
{
Type t = typeof(T);
System.Reflection.PropertyInfo[] properties = t.GetProperties();
foreach (System.Reflection.PropertyInfo info in properties)
{
Console.Write("name=" + info.Name + ";" + "type=" + info.PropertyType.Name + ";value=" + GetObjectPropertyValue<Object>(new object(), info.Name) + "<br />");
}
}