You can place the following XML into a file called test.xml and use it with this example. This example assumes that a file named test.xml exists in the same directory as the compiled program. (xmlDoc.ImportNode(xmlDigitalSignature, True)) (xmlDoc.ImportNode(xmlDigitalSignature, true)) XmlElement xmlDigitalSignature = signedXml.GetXml() ĭim xmlDigitalSignature As XmlElement = signedXml.GetXml()Īppend the element to the XmlDocument object. Retrieve the XML representation of the signature (a element) and save it to a new XmlElement object.
signedXml.AddReference(reference) Ĭompute the signature by calling the ComputeSignature method.
XmlDsigEnvelopedSignatureTransform env = new XmlDsigEnvelopedSignatureTransform() ĭim env As New XmlDsigEnvelopedSignatureTransform()Īdd the Reference object to the SignedXml object. XML data can be represented in different ways, so this step is vital to verification. A transformation allows the verifier to represent the XML data in the identical manner that the signer used. Create a reference to be signed.Īdd an XmlDsigEnvelopedSignatureTransform object to the Reference object.
To sign the entire document, set the Uri property to "". signedXml.SigningKey = rsaKey Ĭreate a Reference object that describes what to sign. SignedXml signedXml = new SignedXml(xmlDoc) Īdd the signing RSA key to the SignedXml object. ' Load an XML file into the XmlDocument object.Ĭreate a new SignedXml object and pass the XmlDocument object to it. Load an XML file into the XmlDocument object. The XmlDocument object contains the XML element to encrypt. RSACryptoServiceProvider rsaKey = new RSACryptoServiceProvider(cspParams) ĭim rsaKey As New RSACryptoServiceProvider(cspParams)Ĭreate an XmlDocument object by loading an XML file from disk. This key will be used to sign the XML document. The key is automatically saved to the key container when you pass the CspParameters object to the constructor of the RSACryptoServiceProvider class. Generate an asymmetric key using the RSACryptoServiceProvider class. CspParameters cspParams = new CspParameters() ĬspParams.Ke圜ontainerName = "XML_DSIG_RSA_KEY" ĬspParams.Ke圜ontainerName = "XML_DSIG_RSA_KEY" To digitally sign an XML documentĬreate a CspParameters object and specify the name of the key container. The key can then be retrieved to verify the XML digital signature, or can be used to sign another XML document.įor information about how to verify an XML digital signature that was created using this procedure, see How to: Verify the Digital Signatures of XML Documents. The example creates an RSA signing key, adds the key to a secure key container, and then uses the key to digitally sign an XML document. The code example in this procedure demonstrates how to digitally sign an entire XML document and attach the signature to the document in a element. The code in this article applies to Windows.
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