c# 新中新二代身份证阅读，包含头像，支持华视
需要用到dll和文件：
其中3个dll文件是需要调用的dll，license.dat文件为解压图片的授权文件
以下是需要用到的dll里面的方法：
/************************端口类API *************************/ [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetMaxRFByte", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetMaxRFByte(int iPort, byte ucByte, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_GetCOMBaud", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_GetCOMBaud(int iPort, ref uint puiBaudRate); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetCOMBaud", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetCOMBaud(int iPort, uint uiCurrBaud, uint uiSetBaud); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_OpenPort", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_OpenPort(int iPort); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_ClosePort", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_ClosePort(int iPort); /**************************SAM类函数 **************************/ [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_ResetSAM", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_ResetSAM(int iPort, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_GetSAMStatus", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_GetSAMStatus(int iPort, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_GetSAMID", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_GetSAMID(int iPort, ref byte pucSAMID, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_GetSAMIDToStr", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_GetSAMIDToStr(int iPort, ref byte pcSAMID, int iIfOpen); /*************************身份证卡类函数 ***************************/ [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_StartFindIDCard", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_StartFindIDCard(int iPort, ref byte pucIIN, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SelectIDCard", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SelectIDCard(int iPort, ref byte pucSN, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_ReadBaseMsg", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_ReadBaseMsg(int iPort, IntPtr pucCHMsg, ref uint puiCHMsgLen, IntPtr pucPHMsg, ref uint puiPHMsgLen, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_ReadIINSNDN", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_ReadIINSNDN(int iPort, ref byte pucIINSNDN, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_ReadBaseMsgToFile", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_ReadBaseMsgToFile(int iPort, ref byte pcCHMsgFileName, ref uint puiCHMsgFileLen, ref byte pcPHMsgFileName, ref uint puiPHMsgFileLen, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_ReadIINSNDNToASCII", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_ReadIINSNDNToASCII(int iPort, ref byte pucIINSNDN, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_ReadNewAppMsg", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_ReadNewAppMsg(int iPort, ref byte pucAppMsg, ref uint puiAppMsgLen, int iIfOpen); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_GetBmp", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_GetBmp(string Wlt_File, int iPort); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_ReadMsg", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_ReadMsg(int iPortID, int iIfOpen, ref IDCardData pIDCardData); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_FindReader", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_FindReader(); /***********************设置附加功能函数 ************************/ [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetPhotoPath", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetPhotoPath(int iOption, ref byte cPhotoPath); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetPhotoType", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetPhotoType(int iType); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetPhotoName", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetPhotoName(int iType); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetSexType", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetSexType(int iType); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetNationType", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetNationType(int iType); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetBornType", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetBornType(int iType); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetUserLifeBType", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetUserLifeBType(int iType); [DllImport("idCardDll\\SynIDCardAPI.dll", EntryPoint = "Syn_SetUserLifeEType", CharSet = CharSet.Ansi, SetLastError = true)] public static extern int Syn_SetUserLifeEType(int iType, int iOption); [DllImport("idCardDll\\WltRS.dll", CallingConvention = CallingConvention.StdCall, SetLastError = true)] static extern int GetBmp(string pucPHMsg, int intf);
读取身份证信息分两个阶段，第一个阶段是获取基本信息，第二个阶段是获取图片信息
获取基本信息很简单，直接调用dll的方法就可以完成，部分代码如下：
int status = 1;//默认为找不到身份证 try { //先查找读卡器 int i, nRet; i = Syn_FindReader(); //只支持usb if (i > 1000) { var nPort = i; if (Syn_OpenPort(nPort) == 0) { Thread.Sleep(5); if (Syn_SetMaxRFByte(nPort, 80, 0) == 0) { Thread.Sleep(5); byte[] pucIIN = new byte[4]; byte[] pucSN = new byte[8]; IDCardData cardMsg = new IDCardData(); nRet = Syn_StartFindIDCard(nPort, ref pucIIN[0], 0); //找卡 nRet = Syn_SelectIDCard(nPort, ref pucSN[0], 0); //选卡 string cardStr = new string(' ', 256); //身份证基本信息返回长度为256 string imgMsg = new string(' ', 1024); //身份证图片信息返回长度为1024 IntPtr msg = Marshal.StringToHGlobalAnsi(cardStr); //身份证基本信息 IntPtr img = Marshal.StringToHGlobalAnsi(imgMsg); //身份证图片 uint mLen = 0; uint iLen = 0; nRet = Syn_ReadBaseMsg(nPort, msg, ref mLen, img, ref iLen, 0); if (nRet == 0) { Syn_ClosePort(nPort); string card = Marshal.PtrToStringUni(msg); char[] cartb = card.ToCharArray(); cardMsg.Name = (new string(cartb, 0, 15)).Trim(); cardMsg.Sex = new string(cartb, 15, 1); cardMsg.Nation = new string(cartb, 16, 2); cardMsg.Born = new string(cartb, 18, 8); cardMsg.Address = (new string(cartb, 26, 35)).Trim(); cardMsg.IDCardNo = new string(cartb, 61, 18); cardMsg.GrantDept = (new string(cartb, 79, 15)).Trim(); cardMsg.UserLifeBegin = new string(cartb, 94, 8); cardMsg.UserLifeEnd = new string(cartb, 102, 8);
获取图片方法有点麻烦，首先通过Syn_ReadBaseMsg方法返回的图片指针和长度获取的字节信息：
byte[] data=new byte[iLen]; Marshal.Copy(img,data,0,data.Length);
将这个获取到的字节信息保存为文件，注意，这里的文件不是图片文件，而是一个wlt类型文件，如果需要获取图片，那么还需要通过GetBmp方法做转换
private static string GetImageBase64Str(byte[] data, string idCardNo) { if (!CheckLicense()) return string.Empty;//license.dat文件失败，那么就不能去获取文件 var wltFileName = Path.Combine(_imageDirPath, string.Format("{0}.wlt", idCardNo)); if (File.Exists(wltFileName)) { File.Delete(wltFileName); } using (FileStream fs = new FileStream(wltFileName, FileMode.Create)) { fs.Write(data, 0, data.Length); fs.Close(); } var nRet = GetBmp(wltFileName, 2); if (nRet == 1) { // Thread.Sleep(200); string bmpFileName = Path.Combine(_imageDirPath, string.Format("{0}.bmp", idCardNo)); if (File.Exists(bmpFileName)) { var str = GetFileBase64Str(bmpFileName); // File.Delete(bmpFileName); return str; } } return string.Empty; }
代码中将图片信息转换为了base64字符串。
注意：
1.由于GetBmp调用了sdtapi.dll中的方法，所以在之前要先要关闭读取的端口，不然会报错。（这是网上用户提醒的，我没有测试过不关闭的情况）
2.GetBmp方法会在wlt文件的当前目录下生成一个同名的bmp文件，这个文件就是身份证图片文件
3.获取图片方法需要厂家的授权文件，我用的dll和授权文件都是新中新的，其中授权文件为license.dat，这个文件必须存放在C盘根目录下，并且不能改名，不然读取会出错
//检测授权文件 private static bool CheckLicense() { var licenceFile = @"c:\license.dat"; var localFile = @"idCardDll\license.dat"; try { if (!File.Exists(licenceFile)) { //不存在，拷贝文件过去 File.Copy(localFile,licenceFile,true); return true; } //文件存在，需要判断数据是否一致 string local = string.Empty; string license = string.Empty; using (FileStream fs = new FileStream(localFile, FileMode.Open, FileAccess.Read)) { using (StreamReader sr = new StreamReader(fs)) { local = sr.ReadToEnd(); } } using (FileStream fs = new FileStream(licenceFile, FileMode.Open, FileAccess.Read)) { using (StreamReader sr = new StreamReader(fs)) { license = sr.ReadToEnd(); } } if (local == license) { return true; } else { File.Copy(localFile, licenceFile, true); return true; } } catch (Exception ex) { //"判断license失败，不能去获取图片"; return false; } }
在转换图片之前先判断授权文件，成功在执行转换操作。
最终结果是将信息存储IDCardData结构体中，图片信息转换为base64str。
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)] public struct IDCardData { [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] public string Name; //姓名 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 6)] public string Sex; //性别 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 20)] public string Nation; //名族 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 18)] public string Born; //出生日期 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 72)] public string Address; //住址 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 38)] public string IDCardNo; //身份证号 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] public string GrantDept; //发证机关 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 18)] public string UserLifeBegin; // 有效开始日期 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 18)] public string UserLifeEnd; // 有效截止日期 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 38)] public string reserved; // 保留 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 255)] public string PhotoBase64Str; // 照片路径 }
WltRS.dll一定要新一点的，我以前用的是2007年的，在转换头像的时候总是报错，找了一个新的，是2012年的，就好了。
以下是我写的一个demo，可以直接调用获取，包含了32位和64的驱动
https://gitee.com/sczmzx/IdCardReaderHelper/tree/master/IdCardReaderHelper
