c# – 使用Rijndael解密时的异常

public static string DecryptPassword(string encrypted) {
    using (MemoryStream ms = new MemoryStream())
    using (RijndaelManaged rijndaelManaged = new RijndaelManaged())
    using (ICryptoTransform cryptoTransform = rijndaelManaged.CreateDecryptor(mGlobalKey, mGlobalVector))
    using (CryptoStream cs = new CryptoStream(ms, cryptoTransform, CryptoStreamMode.Read)) {
        byte[] encryptedBytes = Convert.FromBase64String(encrypted);
        cs.Write(encryptedBytes, 0, encryptedBytes.Length);
        cs.FlushFinalBlock();
        return Encoding.Unicode.GetString(ms.GetBuffer(), 0, (int)ms.Length);
    }
}

问题是,处理cryptostream会导致异常

System.IndexOutOfRangeException : Index was outside the bounds of the array.
at System.Security.Cryptography.RijndaelManagedTransform.DecryptData(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount, Byte[]& outputBuffer, Int32 outputOffset, PaddingMode paddingMode, Boolean fLast)  
at System.Security.Cryptography.RijndaelManagedTransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount)  
at System.Security.Cryptography.CryptoStream.FlushFinalBlock()  
at System.Security.Cryptography.CryptoStream.Dispose(Boolean disposing)  
at System.IO.Stream.Close()  
at System.IO.Stream.Dispose()  

我发现了类似问题的一些链接但没有解决方案.

只是删除隐藏流的处置是否安全,或者只会导致终结器在以后爆炸？