CPU卡讀寫操作函數

       CPU卡與傳統的MifareOne系列卡相比，具有更加安全、複雜的認證機制，這就意味着CPU卡的讀寫操作在軟件開發中變得更加的複雜。我們這些複雜的操作封裝成5個通用的函數，與我們的CPU讀寫器相結合，讓您十分鐘就搞定CPU的讀寫操作。

       //'CPU卡尋卡及將卡復位到14443A-4的指令狀態
        [DllImport("OUR_MIFARE.dll", EntryPoint = "cpurequest")]
        static extern byte cpurequest(byte[] serial, byte[] param, byte[] cosver, byte[] code);
        //-----------------------------------------------------------------------------------------------------------------------------
        //初始化函數，(ctrlword是否需要先清空卡,不需要清空的話，可以需輸入卡密碼，卡密碼長度)ctrlword_0是否先清空卡，分配空間（字節數），
        //Public Declare Function cpursinit Lib "OUR_MIFARE.dll" (ByVal ctrlword As Byte, ByVal key As Long, ByVal keylen As Byte, ByVal customsize As Long) As Byte
        [DllImport("OUR_MIFARE.dll", EntryPoint = "cpursinit", CallingConvention = CallingConvention.StdCall)]
        static extern byte cpursinit(byte ctrlword, byte[] key, byte[] keylen, Int32 customsize);
        //-----------------------------------------------------------------------------------------------------------------------------
        //增加文件（文件序號0~5，文件只讀密碼：長度,文件讀寫密碼,長度，分配空間)
        //Public Declare Function cpursfileadd Lib "OUR_MIFARE.dll" (ByVal fileno As Byte, ByVal readonlykey As Long, ByVal readonlykeylen As Byte, ByVal writekey As Long, ByVal writekeylen As Byte, ByVal customsize As Long) As Byte
        [DllImport("OUR_MIFARE.dll", EntryPoint = "cpursfileadd", CallingConvention = CallingConvention.StdCall)]
        static extern byte cpursfileadd(byte fileno, byte[] readonlykey, byte[] readonlykeylen, byte[] writekey, byte[] writekeylen, Int32 customsize);
        //-----------------------------------------------------------------------------------------------------------------------------
        //'修改文件密碼，修改後，請妥慎記住，否則該文件將無法再用
        //Public Declare Function cpursfilekeychg Lib "OUR_MIFARE.dll" (ByVal fileno As Byte, ByVal keytype As Byte, ByVal oldkey As Long, ByVal oldkeylen As Byte, ByVal newkey As Long, ByVal newkeylen As Byte) As Byte
        [DllImport("OUR_MIFARE.dll", EntryPoint = "cpursfilekeychg", CallingConvention = CallingConvention.StdCall)]
        static extern byte cpursfilekeychg(byte fileno, byte keytype, byte[] oldkey, byte[] oldkeylen, byte[] newkey, byte[] newkeylen);
        //-----------------------------------------------------------------------------------------------------------------------------
        //'修改卡密碼，卡密碼和文件沒有任何關係，卡密碼只是用來清空卡，讀和寫文件是無效的。
        //Public Declare Function cpurscardkeychg Lib "OUR_MIFARE.dll" (ByVal oldkey As Long, ByVal oldkeylen As Byte, ByVal newkey As Long, ByVal newkeylen As Byte) As Byte
        [DllImport("OUR_MIFARE.dll", EntryPoint = "cpurscardkeychg", CallingConvention = CallingConvention.StdCall)]
        static extern byte cpurscardkeychg(byte fileno, byte[] readonlykey, byte[] readonlykeylen, byte[] writekey, byte[] writekeylen, Int32 customsize);
        //-----------------------------------------------------------------------------------------------------------------------------

        //讀文件數據(文件序號,讀寫密碼,密碼長度,讀取起始位置,讀取長度,讀出內容)
        //Public Declare Function cpursfiledataread Lib "OUR_MIFARE.dll" (ByVal fileno As Byte, ByVal keytype As Byte, ByVal key As Long, ByVal keylen As Byte, ByVal startaddr As Long, ByVal databuf As Long, ByVal datalen As Long) As Byte
        [DllImport("OUR_MIFARE.dll", EntryPoint = "cpursfiledataread", CallingConvention = CallingConvention.StdCall)]
        static extern byte cpursfiledataread(byte fileno, byte keytype, byte[] rwkey, byte[] rwkeylen, Int32 startaddr, byte[] databuf, Int32 datalen);
        //-----------------------------------------------------------------------------------------------------------------------------
        //寫文件數據(文件序號,文件讀寫密碼,密碼長度,寫入起始位置,寫入長度，寫入內容)
        //Public Declare Function cpursfiledatawrite Lib "OUR_MIFARE.dll" (ByVal fileno As Byte, ByVal keytype As Byte, ByVal key As Long, ByVal keylen As Byte, ByVal startaddr As Long, ByVal databuf As Long, ByVal datalen As Long) As Byte
        [DllImport("OUR_MIFARE.dll", EntryPoint = "cpursfiledatawrite", CallingConvention = CallingConvention.StdCall)]
        static extern byte cpursfiledatawrite(byte fileno, byte keytype, byte[] rwkey, byte[] rwkeylen, Int32 startaddr, byte[] databuf, Int32 datalen);
        //-----------------------------------------------------------------------------------------------------------------------------
        //修改卡密碼，卡密碼和文件沒有任何關係，卡密碼只是用來清空卡，讀和寫文件是無效的。
        //Public Declare Function cpurscardkeychg Lib "OUR_MIFARE.dll" (ByVal oldkey As Long, ByVal oldkeylen As Byte, ByVal newkey As Long, ByVal newkeylen As Byte) As Byte
        [DllImport("OUR_MIFARE.dll", EntryPoint = "cpurscardkeychg", CallingConvention = CallingConvention.StdCall)]
        static extern byte cpurscardkeychg(byte[] oldkey, byte[] oldlen, byte[] newkey, byte[] newlen);