用C#加密/解密阿拉伯字符串

Question

如何使用这些方法在C#中加密/解密阿拉伯字符串？？？？当我试图解密任何阿拉伯字符串时，它的返回"？？？"问号。。如何通过此代码使用编码UTF8？？请帮忙。。提前感谢

public static string Encrypt(string pDataToEncrypt)
{
    ASCIIEncoding textConverter = new ASCIIEncoding();
    RijndaelManaged myRijndael = new RijndaelManaged();
    byte[] toEncrypt;
    ICryptoTransform encryptor = myRijndael.CreateEncryptor(key, IV);
    MemoryStream msEncrypt = new MemoryStream();
    CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor,            CryptoStreamMode.Write);
    toEncrypt = textConverter.GetBytes(pDataToEncrypt);
    csEncrypt.Write(toEncrypt, 0, toEncrypt.Length);
    csEncrypt.FlushFinalBlock();
    return Convert.ToBase64String(msEncrypt.GetBuffer(), 0, (int)msEncrypt.Length);
}
public static string Decrypt(string pDataToDecrypt)
{
    RijndaelManaged myRijndael = new RijndaelManaged();
    byte[] fromEncrypt;
    //Encoding asciiEncoding = Encoding.ASCII;
    fromEncrypt = Convert.FromBase64String(pDataToDecrypt);
    ICryptoTransform decryptor = myRijndael.CreateDecryptor(key, IV);
    MemoryStream msDecrypt = new MemoryStream(fromEncrypt, 0, fromEncrypt.Length);
    CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read);
    StreamReader sr = new StreamReader(csDecrypt);
    return sr.ReadToEnd();
}

Answer 1

使用UTF-8，您的代码应该是这样的：

public static string Encrypt(string pDataToEncrypt)
{
    RijndaelManaged myRijndael = new RijndaelManaged();
    ICryptoTransform encryptor = myRijndael.CreateEncryptor(key, IV);
    MemoryStream msEncrypt = new MemoryStream();
    CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor,CryptoStreamMode.Write);
    byte[] toEncrypt = Encoding.UTF8.GetBytes(pDataToEncrypt);
    csEncrypt.Write(toEncrypt, 0, toEncrypt.Length);
    csEncrypt.FlushFinalBlock();
    return Convert.ToBase64String(msEncrypt.GetBuffer(), 0, (int)msEncrypt.Length);
}
public static string Decrypt(string pDataToDecrypt)
{
    RijndaelManaged myRijndael = new RijndaelManaged();
    byte[] fromEncrypt = Convert.FromBase64String(pDataToDecrypt);
    ICryptoTransform decryptor = myRijndael.CreateDecryptor(key, IV);
    MemoryStream msDecrypt = new MemoryStream(fromEncrypt, 0, fromEncrypt.Length);
    CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read);
    byte[] plainTextBytes = new byte[fromEncrypt.Length];
    int decryptedByteCount = csDecrypt.Read(plainTextBytes, 0, plainTextBytes.Length);
    return Encoding.UTF8.GetString(plainTextBytes, 0, decryptedByteCount);
}