指定的初始化向量（IV）与此算法的块大小不匹配(Specified initialization vector(IV) does not match the block size for this algorithm)

 我正在尝试使用c＃创建加密系统。 这是加密的代码。 
 
public static void EncryptFile(string inFile, string outFile, string @inkey)
    {
        try
        {
            UnicodeEncoding ue = new UnicodeEncoding();
            byte[] key = ue.GetBytes(inkey);
            FileStream fsEncrypt = new FileStream(outFile, FileMode.Create);

            RijndaelManaged rmCrypto = new RijndaelManaged();

            CryptoStream cs = new CryptoStream(fsEncrypt, rmCrypto.CreateEncryptor(key, key), CryptoStreamMode.Write);
            FileStream fsIn = new FileStream(inFile, FileMode.Open);

            int data;
            while((data=fsIn.ReadByte()) != 1){
                cs.WriteByte((byte)data);
            }

            fsIn.Close(); cs.Close(); fsEncrypt.Close();
        }
        catch(Exception ex)
        {
            MessageBox.Show(ex.Message, "Fail to encrypt", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }
 
 现在，这个代码每次运行时抛出异常，说 
 
 
 
 指定的初始化向量（IV）与此算法的块大小不匹配 
 
 
 我已阅读其他有关此问题的讨论，并说字节数存在问题（传递给此函数的密钥长度为255）。 但我已经尝试使密钥只有16个字节仍然无法正常工作。 
 
 经过一些故障排除我发现这部分： 
 
 CryptoStream cs = new CryptoStream(fsEncrypt, rmCrypto.CreateEncryptor(key, key), CryptoStreamMode.Write); 
 
 抛出异常。 我不知道为什么。 有人可以帮忙吗？ 

I'm trying to make an encryption system with c#. This is the code for the encryption.
 
public static void EncryptFile(string inFile, string outFile, string @inkey)
    {
        try
        {
            UnicodeEncoding ue = new UnicodeEncoding();
            byte[] key = ue.GetBytes(inkey);
            FileStream fsEncrypt = new FileStream(outFile, FileMode.Create);

            RijndaelManaged rmCrypto = new RijndaelManaged();

            CryptoStream cs = new CryptoStream(fsEncrypt, rmCrypto.CreateEncryptor(key, key), CryptoStreamMode.Write);
            FileStream fsIn = new FileStream(inFile, FileMode.Open);

            int data;
            while((data=fsIn.ReadByte()) != 1){
                cs.WriteByte((byte)data);
            }

            fsIn.Close(); cs.Close(); fsEncrypt.Close();
        }
        catch(Exception ex)
        {
            MessageBox.Show(ex.Message, "Fail to encrypt", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }
 
Now, this code throws exception every time I run it, says 
 
 
 
Specified initialization vector(IV) does not match the block size for this algorithm
 
 
I have read on other discussion about this, saying that there is a problem with the number of bytes (my key length passed into this function is 255). But I have tried making the key only 16 bytes and still not working.
 
After some troubleshooting I found out that this part: 
 
CryptoStream cs = new CryptoStream(fsEncrypt, rmCrypto.CreateEncryptor(key, key), CryptoStreamMode.Write); 
 
throws the exception. I have no idea why. Anyone can help?

原文：https://stackoverflow.com/questions/15019236