如何签署XML文件？ [英] How can I sign an XML file?

问题描述

我有这个代码：

using System;
using System.Security.Cryptography;
using System.Xml;

namespace FirmaXML
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                // Create a new CspParameters object to specify a key container.
                CspParameters cspParams = new CspParameters();
                cspParams.KeyContainerName = "XML_DSIG_RSA_KEY";

                // Create a new RSA signing key and save it in the container. 
                RSACryptoServiceProvider rsaKey = new RSACryptoServiceProvider(cspParams);

                // Create a new XML document.
                XmlDocument xmlDoc = new XmlDocument();

                // Load an XML file into the XmlDocument object.
                xmlDoc.PreserveWhitespace = true;
                xmlDoc.Load("test.xml");

                // Sign the XML document. 
                SignXml(xmlDoc, rsaKey);

                Console.WriteLine("XML file signed.");

                // Save the document.
                xmlDoc.Save("test.xml");
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }

        public static void SignXml(XmlDocument xmlDoc, RSA Key)
        {
            // Check arguments.
            if (xmlDoc == null)
                throw new ArgumentException("xmlDoc");
            if (Key == null)
                throw new ArgumentException("Key");

            // Create a SignedXml object.
            SignedXml signedXml = new SignedXml(xmlDoc);

            // Add the key to the SignedXml document.
            document.signedXml.SigningKey = Key;

            // Create a reference to be signed.
            Reference reference = new Reference();
            reference.Uri = "";

            // Add an enveloped transformation to the reference.
            XmlDsigEnvelopedSignatureTransform env = new XmlDsigEnvelopedSignatureTransform();
            reference.AddTransform(env);

            // Add the reference to the SignedXml object.
            signedXml.AddReference(reference);

            // Compute the signature.
            signedXml.ComputeSignature();

            // Get the XML representation of the signature and save
            // it to an XmlElement object.
            XmlElement xmlDigitalSignature = signedXml.GetXml();

            // Append the element to the XML document.
            xmlDoc.DocumentElement.AppendChild(xmlDoc.ImportNode(xmlDigitalSignature, true));

        }
    }
}

但是在行中"SignedXml signedXml = new SignedXml（xmlDoc）;" ;它给了我一个错误，有谁知道我能做些什么来解决它？

But in the line "SignedXml signedXml = new SignedXml (xmlDoc);" It gives me an error, does anyone know what I can do to solve it?

推荐答案

< p style ="margin-bottom：12pt"> 嗨aus2302，

欢迎来到MSDN论坛。

请参阅您的代码和说明，看来你请遵循以下文档：

如何：使用数字签名签署XML文档并请检查
编译代码

• 要编译此示例，您需要包含参考到&的系统.Security.dll 。
• 包括以下命名空间：   System.Xml ，  System.Security.Cryptography ，
  和  系统。 Security.Cryptography.Xml 。

• To compile this example, you need to include a reference to System.Security.dll.
• Include the following namespaces: System.Xml, System.Security.Cryptography, and System.Security.Cryptography.Xml.

您似乎错过了名称空间：
System.Security.Cryptography.Xml
如下所示：

It seems you missing the namespaces: System.Security.Cryptography.Xml as below:

 

最好的问候，

Sara

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