我使用以下C#源代码使用AES(ECB 256)加密纯文本：
public static string Encode(string PlainText)
{
byte[] Key = ASCIIEncoding.UTF8.GetBytes("12345678901234567890123456789012");
string encrypted = null;
RijndaelManaged rj = new RijndaelManaged();
rj.BlockSize = 256;
rj.KeySize = 256;
rj.Key = Key;
rj.GenerateIV();
byte[] IV = rj.IV;
rj.Mode = CipherMode.ECB;
rj.Padding = PaddingMode.Zeros;
try
{
using (MemoryStream ms = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ms,rj.CreateEncryptor(Key,IV),CryptoStreamMode.Write))
{
using (StreamWriter sw = new StreamWriter(cs))
{
sw.Write(PlainText);
sw.Close();
sw.dispose();
}
cs.Close();
cs.dispose();
}
byte[] encryptArray = ms.ToArray();
encrypted = (Convert.ToBase64String(encryptArray));
ms.Close();
ms.dispose();
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
rj.Clear();
}
return encrypted;
}
我需要通过相同的算法解密/加密数据,但我不知道如何.
这是我的java类(不工作)：
public static String encrypt(byte[] key,String cleartext,boolean base64) throws Exception
{
byte[] rawKey = key;
byte[] result = encrypt(rawKey,cleartext.getBytes());
// Base 64
if (base64)
return toBase64(result);
// Hex
return toHex(result);
}
public static String decrypt(byte[] key,String encrypted)
throws Exception
{
byte[] rawKey = key;
byte[] enc = toByte(encrypted);
byte[] result = decrypt(rawKey,enc);
return new String(result);
}
private static byte[] encrypt(byte[] raw,byte[] clear) throws Exception
{
SecretKeySpec skeySpec = new SecretKeySpec(raw,"AES");
Cipher cipher = Cipher.getInstance("AES/ECB/nopadding");
cipher.init(Cipher.ENCRYPT_MODE,skeySpec);
byte[] encrypted = cipher.doFinal(clear);
return encrypted;
}
Java调用：
encrypt("12345678901234567890123456789012".getBytes(),"Example Message",true);
我不知道如何在Java中选择块大小或PaddingMode.Zeros.
任何的想法？
提前致谢
解决方法
是的,问题是AES中128位块大小的限制(参见“强对比无限强度加密”).
最后,我使用了GNU Crypto并且它有效！我已经导入了所有源代码,并且删除了我没有使用的代码.
如果有人想要清理过的源代码,他只需要问我.
谢谢您的帮助.