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基于C#技术实现身份证识别功能

第二代居民身份证是由多层聚脂材料复合而成的单页卡式证件，采用非接触式IC卡技术制作，具备视读和机读两种功能，证件尺寸与信用卡基本一致。证件正面印有国徽、证件名称、长城图案、签发机关和有效期以及彩虹扭索花纹。.

以下是基于C#技术实现身份证识别功能：

[DllImport("termb.dll")]
static extern int InitComm(int port);//连接身份证阅读器
[DllImport("termb.dll")]
static extern int InitCommExt();//自动搜索身份证阅读器并连接身份证阅读器
[DllImport("termb.dll")]
static extern int CloseComm();//断开与身份证阅读器连接
[DllImport("termb.dll")]
static extern int Authenticate();//判断是否有放卡，且是否身份证
[DllImport("termb.dll")]
public static extern int Read_Content(int index);//读卡操作,信息文件存储在dll所在下
[DllImport("termb.dll")]
public static extern int ReadContent(int index);//读卡操作,信息文件存储在dll所在下
[DllImport("termb.dll")]
static extern int GetSAMID(StringBuilder SAMID);//获取SAM模块编号
[DllImport("termb.dll")]
static extern int GetSAMIDEx(StringBuilder SAMID);//获取SAM模块编号（10位编号）
[DllImport("termb.dll")]
static extern int GetBmpPhoto(string PhotoPath);//解析身份证照片
[DllImport("termb.dll")]
static extern int GetBmpPhotoToMem(byte[] imageData, int cbImageData);//解析身份证照片
[DllImport("termb.dll")]
static extern int GetBmpPhotoExt();//解析身份证照片
[DllImport("termb.dll")]
static extern int Reset_SAM();//重置Sam模块
[DllImport("termb.dll")]
static extern int GetSAMStatus();//获取SAM模块状态
[DllImport("termb.dll")]
static extern int GetCardInfo(int index, StringBuilder value);//解析身份证信息
[DllImport("termb.dll")]
static extern int ExportCardImageV();//生成竖版身份证正反两面图片(输出目录：dll所在目录的cardv.jpg和SetCardJPGPathNameV指定路径)
[DllImport("termb.dll")]
static extern int ExportCardImageH();//生成横版身份证正反两面图片(输出目录：dll所在目录的cardh.jpg和SetCardJPGPathNameH指定路径)
[DllImport("termb.dll")]
static extern int SetTempDir(string DirPath);//设置生成文件临时目录
[DllImport("termb.dll")]
static extern int GetTempDir(StringBuilder path, int cbPath);//获取文件生成临时目录
[DllImport("termb.dll")]
static extern void GetPhotoJPGPathName(StringBuilder path, int cbPath);//获取jpg头像全路径名
[DllImport("termb.dll")]
static extern int SetPhotoJPGPathName(string path);//设置jpg头像全路径名
[DllImport("termb.dll")]
static extern int SetCardJPGPathNameV(string path);//设置竖版身份证正反两面图片全路径
[DllImport("termb.dll")]
static extern int GetCardJPGPathNameV(StringBuilder path, int cbPath);//获取竖版身份证正反两面图片全路径
[DllImport("termb.dll")]
static extern int SetCardJPGPathNameH(string path);//设置横版身份证正反两面图片全路径
[DllImport("termb.dll")]
static extern int GetCardJPGPathNameH(StringBuilder path, int cbPath);//获取横版身份证正反两面图片全路径
[DllImport("termb.dll")]
static extern int getName(StringBuilder data, int cbData);//获取姓名
[DllImport("termb.dll")]
static extern int getSex(StringBuilder data, int cbData);//获取性别
[DllImport("termb.dll")]
static extern int getNation(StringBuilder data, int cbData);//获取民族
[DllImport("termb.dll")]
static extern int getBirthdate(StringBuilder data, int cbData);//获取生日(YYYYMMDD)
[DllImport("termb.dll")]
static extern int getAddress(StringBuilder data, int cbData);//获取地址
[DllImport("termb.dll")]
static extern int getIDNum(StringBuilder data, int cbData);//获取身份证号
[DllImport("termb.dll")]
static extern int getIssue(StringBuilder data, int cbData);//获取签发机关
[DllImport("termb.dll")]
static extern int getEffectedDate(StringBuilder data, int cbData);//获取有效期起始日期(YYYYMMDD)
[DllImport("termb.dll")]
static extern int getExpiredDate(StringBuilder data, int cbData);//获取有效期截止日期(YYYYMMDD)
[DllImport("termb.dll")]
static extern int getBMPPhotoBase64(StringBuilder data, int cbData);//获取BMP头像Base64编码
[DllImport("termb.dll")]
static extern int getJPGPhotoBase64(StringBuilder data, int cbData);//获取JPG头像Base64编码
[DllImport("termb.dll")]
static extern int getJPGCardBase64V(StringBuilder data, int cbData);//获取竖版身份证正反两面JPG图像base64编码字符串
[DllImport("termb.dll")]
static extern int getJPGCardBase64H(StringBuilder data, int cbData);//获取横版身份证正反两面JPG图像base64编码字符串
[DllImport("termb.dll")]
static extern int HIDVoice(int nVoice);//语音提示。。仅适用于与带HID语音设备的身份证阅读器（如ID200）
[DllImport("termb.dll")]
static extern int IC_SetDevNum(int iPort, StringBuilder data, int cbdata);//设置发卡器序列号
[DllImport("termb.dll")]
static extern int IC_GetDevNum(int iPort, StringBuilder data, int cbdata);//获取发卡器序列号
[DllImport("termb.dll")]
static extern int IC_GetDevVersion(int iPort, StringBuilder data, int cbdata);//设置发卡器序列号
[DllImport("termb.dll")]
static extern int IC_WriteData(int iPort, int keyMode, int sector, int idx, StringBuilder key, StringBuilder data, int cbdata, ref uint snr);//写数据
[DllImport("termb.dll")]
static extern int IC_ReadData(int iPort, int keyMode, int sector, int idx, StringBuilder key, StringBuilder data, int cbdata, ref uint snr);//du数据
[DllImport("termb.dll")]
static extern int IC_GetICSnr(int iPort, ref uint snr);//读IC卡物理卡号
[DllImport("termb.dll")]
static extern int IC_GetIDSnr(int iPort, StringBuilder data, int cbdata);//读身份证物理卡号
[DllImport("termb.dll")]
static extern int getEnName(StringBuilder data, int cbdata);//获取英文名
[DllImport("termb.dll")]
static extern int getCnName(StringBuilder data, int cbdata);//获取中文名
[DllImport("termb.dll")]
static extern int getPassNum(StringBuilder data, int cbdata);//获取港澳台居通行证号码
[DllImport("termb.dll")]
static extern int getVisaTimes();//获取签发次数
[DllImport("termb.dll")]
static extern int IC_ChangeSectorKey(int iPort, int keyMode, int nSector, StringBuilder oldKey, StringBuilder newKey);
public Form1()
{
InitializeComponent();
for(int i =0;i<16;i++)
{
comboBox_Key.Items.Add(""+i);
}
for (int i = 0; i < 3; i++)
{
comboBox_Clock.Items.Add("" + i);
}
string[] sAllPort = null;
try
{
sAllPort = SerialPort.GetPortNames();
int nPortNu = sAllPort.Length;
for (int i = 0; i < nPortNu; i++)
{
int nPort = Convert.ToInt32(sAllPort[i].Substring(sAllPort[i].Length - 1, 1));
StringBuilder sb = new StringBuilder(cbDataSize);
if (1 == IC_GetDevVersion(nPort, sb, cbDataSize))
{
comboBox_Port.Items.Add(sAllPort[i]);
}
}
}
catch (Exception ex)
{
throw new Exception("获取计算机COM口列表失败!\r\n错误信息:" + ex.Message);
}
}
private void button_Connect_Click(object sender, EventArgs e)
{
int AutoSearchReader = InitCommExt();
if (AutoSearchReader > 0)
{
Port = AutoSearchReader;
IsConnected = true;
textBox_Name.Text = AutoSearchReader.ToString();
StringBuilder sb = new StringBuilder(cbDataSize);
GetSAMID(sb);
MessageBox.Show("连接身份证阅读器成功,SAM模块编号:" + sb);
button_Connect.Enabled = false;
button_ReadCard.Enabled = true;
button_DisConnect.Enabled = true;
return;
}
else
{
MessageBox.Show("检查是否正确连接设备");
}
}
public void ClearData()
{
textBox_Name.Text = "";
textBox_NationOrCountry.Text = "";
textBox_Sex.Text = "";
textBox_VisaTimes.Text = "";
textBox_PassNum.Text = "";
textBox_Name.Text = "";
textBox_Issue.Text = "";
textBox_IDCardNum.Text = "";
textBox_ExpiredDate.Text = "";
textBox_CardType.Text = "";
textBox_BornDate.Text = "";
textBox_Address.Text = "";
textBox_BornDate.Text = "";
pictureBox_TouXiang.Image = null;
}
private void button_ReadCard_Click(object sender, EventArgs e)
{
//卡认证
int FindCard = Authenticate();
if (FindCard != 1)
{
ClearData();
return;
}
//读卡
int rs = Read_Content(1);
if (rs != 1 && rs != 2 && rs != 3)
{
ClearData();
return;
}
//读卡成功
//姓名
StringBuilder sb = new StringBuilder(cbDataSize);
getName(sb, cbDataSize);
textBox_Name.Text = sb.ToString();
//民族/国家
getNation(sb, cbDataSize);
textBox_NationOrCountry.Text = sb.ToString();
//性别
getSex(sb, cbDataSize);
textBox_Sex.Text = sb.ToString();
//出生
getBirthdate(sb, cbDataSize);
textBox_BornDate.Text = sb.ToString();
// sb.ToString().Substring(0, 4) - sb.ToString().Substring(4, 2) - sb.ToString().Substring(6, 2);
//地址
getAddress(sb, cbDataSize);
string ad = sb.ToString();
textBox_Address.Text = ad;
//号码
getIDNum(sb, cbDataSize);
textBox_IDCardNum.Text = sb.ToString();
//机关
getIssue(sb, cbDataSize);
textBox_Issue.Text = sb.ToString();
//有效期
getEffectedDate(sb, cbDataSize);
string aa = sb.ToString();
getExpiredDate(sb, cbDataSize);
textBox_ExpiredDate.Text = aa + sb.ToString();
//通行证号
getPassNum(sb, cbDataSize);
textBox_PassNum.Text = sb.ToString();
//签证次数
textBox_VisaTimes.Text = "" + getVisaTimes();
//英文名
getEnName(sb, cbDataSize);
textBox_EnName.Text = sb.ToString();
//中文名
getCnName(sb, cbDataSize);
textBox_CnName.Text = sb.ToString();
//证件类型
GetCardInfo(105, sb);
if ("1" == sb.ToString())
{
textBox_CardType.Text = "居民身份证";
}
else if ("3" == sb.ToString())
{
textBox_CardType.Text = "港澳台居住证";
}
else
{
textBox_CardType.Text = "外国人居住证";
}
//显示头像
GetBmpPhotoExt();
int cbPhoto = 256 * 1024;
StringBuilder sbPhoto = new StringBuilder(cbPhoto);
int nRet = getBMPPhotoBase64(sbPhoto, cbPhoto);
byte[] byPhoto = Convert.FromBase64String(sbPhoto.ToString());
if (nRet == 1)
{
MemoryStream ms = new MemoryStream(byPhoto);
Image a = Image.FromStream(ms);
pictureBox_TouXiang.Image = a;
}
}
private void button_DisConnect_Click(object sender, EventArgs e)
{
ClearData();
button_Connect.Enabled = true;
button_ReadCard.Enabled = false;
button_DisConnect.Enabled = false;
}
private void button_ReadIcCard_Click(object sender, EventArgs e)
{
if (comboBox_Key.SelectedIndex == -1 || comboBox_Clock.SelectedIndex == -1 || comboBox_Port.SelectedIndex == -1 || textBox_Key.Text.Trim() == String.Empty)
{
textBox_Tip.Text = "Please check input";
return;
}
string  strPort = comboBox_Port.SelectedItem.ToString();
int nPort = Convert.ToInt32(strPort.Substring(strPort.Length - 1, 1));
StringBuilder key = new StringBuilder(textBox_Key.Text);
StringBuilder data = new StringBuilder(256);
uint snr = 0;
int rs = IC_ReadData(nPort, 0, comboBox_Key.SelectedIndex + 1, comboBox_Clock.SelectedIndex, key, data, 256, ref snr);
if (rs == 1)
{
textBox_Tip.Text = data.ToString().Trim();
}
else
{
textBox_Tip.Text = "IC_ReadData : Fail";
}
}
private void button_WriteIcCard_Click(object sender, EventArgs e)
{
if (comboBox_Key.SelectedIndex == -1 || comboBox_Clock.SelectedIndex == -1 || comboBox_Port.SelectedIndex == -1 || textBox_Key.Text.Trim() == String.Empty)
{
textBox_Tip.Text = "Please check input";
return;
}
string strPort = comboBox_Port.SelectedItem.ToString();
int nPort = Convert.ToInt32(strPort.Substring(strPort.Length - 1, 1));
StringBuilder key = new StringBuilder(textBox_Key.Text);
StringBuilder data = new StringBuilder(textBox_WriteIcData.Text);
uint snr = 0;
if (data.Length != 32)
{
MessageBox.Show("请输入32位的16进制字符(16字节数据)");
return;
}
int rs = IC_WriteData(nPort, 0, comboBox_Key.SelectedIndex+1, comboBox_Clock.SelectedIndex, key, data, data.Length, ref snr);
if (rs == 1)
{
textBox_Tip.Text = "IC_WriteData :  Success";
}
else
{
textBox_Tip.Text = "IC_WriteData : Fail";
}
}
private void button_GetIcSnr_Click(object sender, EventArgs e)
{
if (comboBox_Port.SelectedIndex == -1)
{
textBox_Tip.Text = "Please check input";
return;
}
string strPort = comboBox_Port.SelectedItem.ToString();
int nPort = Convert.ToInt32(strPort.Substring(strPort.Length - 1, 1));
uint snr = 0;
int aa = IC_GetICSnr(nPort, ref snr);
if (aa == 1)
{
textBox_Tip.Text = snr.ToString();
}
else
{
textBox_Tip.Text = "IC_GetICSnr : Fail";
}
}
private void button_GetIdSnr_Click(object sender, EventArgs e)
{
if (comboBox_Port.SelectedIndex == -1)
{
textBox_Tip.Text = "Please check input";
return;
}
string strPort = comboBox_Port.SelectedItem.ToString();
int nPort = Convert.ToInt32(strPort.Substring(strPort.Length - 1, 1));            
StringBuilder sb = new StringBuilder(cbDataSize);
int aa = IC_GetIDSnr(nPort, sb, cbDataSize);
if (aa == 1)
{
textBox_Tip.Text = sb.ToString();
}
else
{
textBox_Tip.Text = "IC_GetIDSnr : Fail";
}
}
private void button_GetIdDN_Click(object sender, EventArgs e)
{
if (comboBox_Port.SelectedIndex == -1)
{
textBox_Tip.Text = "Please check input";
return;
}
string strPort = comboBox_Port.SelectedItem.ToString();
int nPort = Convert.ToInt32(strPort.Substring(strPort.Length - 1, 1));  
StringBuilder sb = new StringBuilder(cbDataSize);
int rs = IC_GetDevNum(nPort, sb, cbDataSize);
if (rs == 1)
{
string tempStr = sb.ToString();
textBox_Tip.Text = tempStr;
//tempStr = tempStr.Substring(0, 12);
//Int64 abc = Int64.Parse(tempStr);
//textBox_Tip.Text = string.Format("{0:x12}", abc);
//textBox_Tip.Text = "IC_GetDevNum : Success";
}
else
{
textBox_Tip.Text = "IC_GetDevNum : Fail";
}
}
private void button_ChangeKey_Click(object sender, EventArgs e)
{
//IC_ChangeSectorKey(int iPort, int keyMode, int nSector, char *oldKey, char *newKey);
if (comboBox_Key.SelectedIndex == -1 || comboBox_Clock.SelectedIndex == -1 || comboBox_Port.SelectedIndex == -1)
{
textBox_Tip.Text = "Please check input";
return;
}
string strPort = comboBox_Port.SelectedItem.ToString();
int nPort = Convert.ToInt32(strPort.Substring(strPort.Length - 1, 1));  
StringBuilder oldKey = new StringBuilder(textBox_Key.Text);
StringBuilder newKey = new StringBuilder("123456789012");
int rs = IC_ChangeSectorKey(nPort, comboBox_Key.SelectedIndex + 1, comboBox_Clock.SelectedIndex, oldKey, newKey);
if (rs == 1)
{
textBox_Tip.Text = "改密成功";
}
else
{
textBox_Tip.Text = "改密失败";
}

 

本文作者：conan信息来源：公众号 UP技术控所属分类：C#

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