Question

我需要让我的应用程序的用户使用他们的个人USB安全令牌签署他们的批准。

我已设法签署数据，但我无法获得有关谁使用了令牌的信息。

这是我到目前为止的代码：

CspParameters csp = new CspParameters(1, "SafeNet RSA CSP");
csp.Flags = CspProviderFlags.UseDefaultKeyContainer;            
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(csp);
// Create some data to sign. 
byte[] data = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7 };
Console.WriteLine("Data         : " + BitConverter.ToString(data));
// Sign the data using the Smart Card CryptoGraphic Provider.            
byte[] sig = rsa.SignData(data, "SHA1");            
Console.WriteLine("Signature    : " + BitConverter.ToString(sig));

令牌信息中有一个名为“令牌名称”的字段。我如何访问该字段以验证是否已使用令牌签署批准？

enter image description here

有条件的信息和更新：

“令牌名称”始终与所有者的名称（拥有usb的用户）匹配令牌）
似乎无法完成，也许有一个网络服务或我需要调用的东西才能直接获取信息来自证书颁发机构。

Answer 1

当我问这个问题时，我对数字证书的理解是非常基本的，所以问题没有被正确地问到。现在我知道我需要从智能卡设备访问证书，查询其属性并测试用户是否可以为其输入rigth PIN。

以下是我用过的代码：

//Prompt the user with the list of certificates on the local store.
//The user have to select the certificate he wants to use for signing.
//Note: All certificates form the USB device are automatically copied to the local store as soon the device is plugged in.
X509Store store = new X509Store(StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadOnly);
X509CertificateCollection certificates = X509Certificate2UI.SelectFromCollection(store.Certificates,
                                                                                "Certificados conocidos",
                                                                                "Por favor seleccione el certificado con el cual desea firmar",
                                                                                X509SelectionFlag.SingleSelection
                                                                                );
store.Close();
X509Certificate2 certificate = null;
if (certificates.Count != 0)
{
    //The selected certificate
    certificate = (X509Certificate2)certificates[0];
}
else
{
    //The user didn't select a certificate
    return "El usuario canceló la selección de un certificado";
}
//Check certificate's atributes to identify the type of certificate (censored)
if (certificate.Issuer != "CN=............................., OU=................., O=..., C=US")
{
    //The selected certificate is not of the needed type
    return "El certificado seleccionado no corresponde a un token ...";
}
//Check if the certificate is issued to the current user
if (!certificate.Subject.ToUpper().Contains(("E=" + pUserADLogin + "@censoreddomain.com").ToUpper()))
{
    return "El certificado seleccionado no corresponde al usuario actual";
}
//Check if the token is currently plugged in
XmlDocument xmlDoc = new XmlDocument();
XmlElement element = xmlDoc.CreateElement("Content", SignedXml.XmlDsigNamespaceUrl.ToString());
element.InnerText = "comodin";
xmlDoc.AppendChild(element);
SignedXml signedXml = new SignedXml();
try
{
    signedXml.SigningKey = certificate.PrivateKey;
}
catch
{
    //USB Token is not plugged in
    return "El token no se encuentra conectado al equipo";
}
DataObject dataObject = new DataObject();
dataObject.Data = xmlDoc.ChildNodes;
dataObject.Id = "CONTENT";
signedXml.AddObject(dataObject);
Reference reference = new Reference();
reference.Uri = "#CONTENT";
signedXml.AddReference(reference);
//Attempt to sign the data. The user will be prompted to enter his PIN
try
{
    signedXml.ComputeSignature();
}
catch
{
    //User didn't enter the correct PIN
    return "Hubo un error confirmando la identidad del usuario";
}
//The user has signed with the correct token
return String.Format("El usuario {0} ha firmado exitosamente usando el token con serial {1}", pUserADLogin, certificate.SerialNumber);

来源：

http://stormimon.developpez.com/dotnet/signature-electronique/（en Francais） https://www.simple-talk.com/content/print.aspx?article=1713（英文）

如何使用C＃从安全令牌获取信息

1 个答案: