-
编程语言
站-
热门城市 全国站>
-
其他省市
-
-
15692118659
小标
2018-11-14
来源 ：
阅读 3797
评论 0
摘要：本文主要向大家介绍了C#编程之C#创建数字证书并导出为pfx，并使用pfx进行非对称加解密，通过具体的内容向大家展示，希望对大家学习C#编程有所帮助。
本文主要向大家介绍了C#编程之C#创建数字证书并导出为pfx，并使用pfx进行非对称加解密，通过具体的内容向大家展示，希望对大家学习C#编程有所帮助。
我的项目当中，考虑到安全性，需要为每个客户端分发一个数字证书，同时使用数字证书中的公私钥来进行数据的加解密。为了完成这个安全模块，特写了如下一个DEMO程序，该DEMO程序包含的功能有：
1：调用.NET2.0的MAKECERT创建含有私钥的数字证书，并存储到个人证书区；
2：将该证书导出为pfx文件，并为其指定一个用来打开pfx文件的password；
3：读取pfx文件，导出pfx中公钥和私钥；
4：用pfx证书中的公钥进行数据的加密，用私钥进行数据的解密；
系统界面：
代码如下：
///
///
///
private void btn_toPfxFile_Click(object sender, EventArgs e)
{
X509Store store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadWrite);
X509Certificate2Collection storecollection = (X509Certificate2Collection)store.Certificates;
foreach (X509Certificate2 x509 in storecollection)
{
if (x509.Subject == "CN=luminji")
{
Debug.Print(string.Format("certificate name: {0}", x509.Subject));
byte[] pfxByte = x509.Export(X509ContentType.Pfx, "123");
using (FileStream fileStream = new FileStream("luminji.pfx", FileMode.Create))
{
// Write the data to the file, byte by byte.
for (int i = 0; i < pfxByte.Length; i++)
fileStream.WriteByte(pfxByte[i]);
// Set the stream position to the beginning of the file.
fileStream.Seek(0, SeekOrigin.Begin);
// Read and verify the data.
for (int i = 0; i < fileStream.Length; i++)
{
if (pfxByte[i] != fileStream.ReadByte())
{
Debug.Print("Error writing data.");
return;
}
}
fileStream.Close();
Debug.Print("The data was written to {0} " +
"and verified.", fileStream.Name);
}
string myname = "my name is luminji! and i love huzhonghua!";
string enStr = this.RSAEncrypt(x509.PublicKey.Key.ToXmlString(false), myname);
MessageBox.Show("密文是：" + enStr);
string deStr = this.RSADecrypt(x509.PrivateKey.ToXmlString(true), enStr);
MessageBox.Show("明文是：" + deStr);
}
}
store.Close();
store = null;
storecollection = null;
}
///
///
///
private void btn_createPfx_Click(object sender, EventArgs e)
{
string MakeCert = "C://Program Files//Microsoft Visual Studio 8//SDK//v2.0//Bin//makecert.exe";
string x509Name = "CN=luminji";
string param = " -pe -ss my -n /"" + x509Name + "/" " ;
Process p = Process.Start(MakeCert, param);
p.WaitForExit();
p.Close();
MessageBox.Show("over");
}
///
///
///
private void btn_readFromPfxFile(object sender, EventArgs e)
{
X509Certificate2 pc = new X509Certificate2("luminji.pfx", "123");
MessageBox.Show("name:" + pc.SubjectName.Name);
MessageBox.Show("public:" + pc.PublicKey.ToString());
MessageBox.Show("private:" + pc.PrivateKey.ToString());
pc = null;
}
///
///
///
///
public string RSADecrypt(string xmlPrivateKey, string m_strDecryptString)
{
RSACryptoServiceProvider provider = new RSACryptoServiceProvider();
provider.FromXmlString(xmlPrivateKey);
byte[] rgb = Convert.FromBase64String(m_strDecryptString);
byte[] bytes = provider.Decrypt(rgb, false);
return new UnicodeEncoding().GetString(bytes);
}
///
///
///
///
public string RSAEncrypt(string xmlPublicKey, string m_strEncryptString)
{
RSACryptoServiceProvider provider = new RSACryptoServiceProvider();
provider.FromXmlString(xmlPublicKey);
byte[] bytes = new UnicodeEncoding().GetBytes(m_strEncryptString);
return Convert.ToBase64String(provider.Encrypt(bytes, false));
}
上文是一个示例程序，一个完整的证书工具类如下：
public sealed class DataCertificate
{
#region 生成证书
///
///
///
///
public static bool CreateCertWithPrivateKey(string subjectName, string makecertPath)
{
subjectName = "CN=" + subjectName;
string param = " -pe -ss my -n /"" + subjectName + "/" ";
try
{
Process p = Process.Start(makecertPath, param);
p.WaitForExit();
p.Close();
}
catch (Exception e)
{
LogRecord.putErrorLog(e.ToString(), "DataCerficate.CreateCertWithPrivateKey");
return false;
}
return true;
}
#endregion
#region 文件导入导出
///
///
证书主题，不包含CN=
///
pfx文件名
///
pfx文件密码
///
是否从存储区删除
///
public static bool ExportToPfxFile(string subjectName, string pfxFileName,
string password, bool isDelFromStore)
{
subjectName = "CN=" + subjectName;
X509Store store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadWrite);
X509Certificate2Collection storecollection = (X509Certificate2Collection)store.Certificates;
foreach (X509Certificate2 x509 in storecollection)
{
if (x509.Subject == subjectName)
{
Debug.Print(string.Format("certificate name: {0}", x509.Subject));
byte[] pfxByte = x509.Export(X509ContentType.Pfx, password);
using (FileStream fileStream = new FileStream(pfxFileName, FileMode.Create))
{
// Write the data to the file, byte by byte.
for (int i = 0; i < pfxByte.Length; i++)
fileStream.WriteByte(pfxByte[i]);
// Set the stream position to the beginning of the file.
fileStream.Seek(0, SeekOrigin.Begin);
// Read and verify the data.
for (int i = 0; i < fileStream.Length; i++)
{
if (pfxByte[i] != fileStream.ReadByte())
{
LogRecord.putErrorLog("Export pfx error while verify the pfx file!", "ExportToPfxFile");
fileStream.Close();
return false;
}
}
fileStream.Close();
}
if( isDelFromStore == true)
store.Remove(x509);
}
}
store.Close();
store = null;
storecollection = null;
return true;
}
///
///
///
///
public static bool ExportToCerFile(string subjectName, string cerFileName)
{
subjectName = "CN=" + subjectName;
X509Store store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadWrite);
X509Certificate2Collection storecollection = (X509Certificate2Collection)store.Certificates;
foreach (X509Certificate2 x509 in storecollection)
{
if (x509.Subject == subjectName)
{
Debug.Print(string.Format("certificate name: {0}", x509.Subject));
//byte[] pfxByte = x509.Export(X509ContentType.Pfx, password);
byte[] cerByte = x509.Export(X509ContentType.Cert);
using (FileStream fileStream = new FileStream(cerFileName, FileMode.Create))
{
// Write the data to the file, byte by byte.
for (int i = 0; i < cerByte.Length; i++)
fileStream.WriteByte(cerByte[i]);
// Set the stream position to the beginning of the file.
fileStream.Seek(0, SeekOrigin.Begin);
// Read and verify the data.
for (int i = 0; i < fileStream.Length; i++)
{
if (cerByte[i] != fileStream.ReadByte())
{
LogRecord.putErrorLog("Export CER error while verify the CERT file!", "ExportToCERFile");
fileStream.Close();
return false;
}
}
fileStream.Close();
}
}
}
store.Close();
store = null;
storecollection = null;
return true;
}
#endregion
#region 从证书中获取信息
///
///
///
///
public static X509Certificate2 GetCertificateFromPfxFile(string pfxFileName,
string password)
{
try
{
return new X509Certificate2(pfxFileName, password, X509KeyStorageFlags.Exportable);
}
catch (Exception e)
{
LogRecord.putErrorLog("get certificate from pfx" + pfxFileName + " error:" + e.ToString(),
"GetCertificateFromPfxFile");
return null;
}
}
///
///
///
public static X509Certificate2 GetCertificateFromStore(string subjectName)
{
subjectName = "CN=" + subjectName;
X509Store store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadWrite);
X509Certificate2Collection storecollection = (X509Certificate2Collection)store.Certificates;
foreach (X509Certificate2 x509 in storecollection)
{
if (x509.Subject == subjectName)
{
return x509;
}
}
store.Close();
store = null;
storecollection = null;
return null;
}
///
///
public static X509Certificate2 GetCertFromCerFile(string cerPath)
{
try
{
return new X509Certificate2(cerPath);
}
catch (Exception e)
{
LogRecord.putErrorLog(e.ToString(), "DataCertificate.LoadStudentPublicKey");
return null;
}
}
#endregion
}
本文由职坐标整理并发布，希望对同学们有所帮助。了解更多详情请关注职坐标编程语言C#.NET频道！
喜欢 | 2
不喜欢 | 0
您输入的评论内容中包含违禁敏感词
我知道了
请输入正确的手机号码
请输入正确的验证码
您今天的短信下发次数太多了，明天再试试吧！
我们会在第一时间安排职业规划师联系您！
您也可以联系我们的职业规划师咨询：
版权所有 职坐标-一站式AI+学习就业服务平台 沪ICP备13042190号-4
上海海同信息科技有限公司 Copyright ©2015 www.zhizuobiao.com，All Rights Reserved.
沪公网安备 31011502005948号
资料领取
答疑解惑
技术交流
职业测评
面试技巧
高薪秘笈
