I need to translate the below C# codes into Java, however, I could not find any Java equivalent to the Rfc2898DerivedBytes and Rijndael of C#.
private static string Encrypt(string sData, string sEncryptionKey)
{
string str = null;
string str2;
try
{
Rfc2898DeriveBytes bytes = new Rfc2898DeriveBytes(sEncryptionKey, 8);
Rijndael rijndael = Rijndael.Create();
rijndael.IV = bytes.GetBytes(rijndael.BlockSize / 8);
rijndael.Key = bytes.GetBytes(rijndael.KeySize / 8);
byte[] buffer = Encoding.Unicode.GetBytes(sData);
using (MemoryStream stream = new MemoryStream())
{
using (CryptoStream stream2 = new CryptoStream(stream, rijndael.CreateEncryptor(), CryptoStreamMode.Write))
{
stream.Write(bytes.Salt, 0, bytes.Salt.Length);
stream2.Write(buffer, 0, buffer.Length);
stream2.Close();
str = Convert.ToBase64String(stream.ToArray());
str2 = str;
}
}
}
catch (Exception exception)
{
System.out.println(exception.getMessage());
}
return str2;
}
[Update]
I need to use this function to encrypt the password for new created user, and the encrypted password should also be correctly decrypted by other invoker including C#.
I follow the documents which list in the comments and answer, and try to write below simply sample for quickly verification.
public class testEncrypt {
public static void main(String[] args) throws Exception {
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
char[] password = "passkey".toCharArray();
SecureRandom random = new SecureRandom();
byte[] salt = new byte[8];
random.nextBytes(salt);
KeySpec spec = new PBEKeySpec(password, salt, 1000, 256);
SecretKey tmp = factory.generateSecret(spec);
SecretKey secret = new SecretKeySpec(tmp.getEncoded(), "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, secret);
AlgorithmParameters params = cipher.getParameters();
byte[] iv = params.getParameterSpec(IvParameterSpec.class).getIV();
byte[] ciphertext = cipher.doFinal("301a7fed-54e4-4ae2-9b4d-6db057f75c91".getBytes("UTF-8"));
System.out.println(ciphertext.length);
}
}
However, the length of the ciphertext is 48, but actually in C#, it looks like this format
WHUNV5xrsfETEiCwcT0M731+Ak1jibsWEodJSaBraP1cmmkS1TpGWqwt/6p/a7oy8Yq30ImZPbFF+Y0JNLa3Eu2UGuazZtuhEepUIIdaDEtA2FO0JYIj2A==
total 120 characters.
Is there something wrong with the code?
