public ActionResult SignCodComplete(SignatureCompleteModel model)
{
byte[] signatureContent;
try {
var signer = new XmlElementSigner();
// Set the document to be signed and the policy, exactly like in the SignCod method
signer.SetXml(Storage.GetSampleCodEnvelope());
signer.SetPolicy(getSignaturePolicy());
// Set the signature computed on the client-side, along with the "transfer data"
signer.SetPrecomputedSignature(model.Signature, model.TransferData);
// It is not necessary to set the signing certificate nor the element ID to be signed, both are contained in the "transfer data"
// Call ComputeSignature(), which validates the signature of the "to-sign-hash" and finishes the signature process
signer.ComputeSignature();
// Get the signed XML as an array of bytes
signatureContent = signer.GetSignedXml();
} catch (ValidationException ex) {
// Some of the operations above may throw a ValidationException, for instance if the certificate is revoked.
ModelState.AddModelError("", ex.ValidationResults.ToString());
return(View());
}
// Store the signature file on the folder "App_Data/" and redirect to the SignCodResult action with the filename.
var filename = Storage.StoreFile(signatureContent, ".xml");
return(RedirectToAction("SignCodResult", new SignatureInfoModel()
{
Filename = filename
}));
}
public ActionResult SignCodehComplete(string id, SignatureCompleteModel model)
{
// Recover XML envelope with signed COD element from "storage" based on its ID
byte[] content;
if (!StorageMock.TryGetFile(id, out content))
{
return(HttpNotFound());
}
byte[] signatureContent;
try {
// Recover the "transfer data" content stored in a temporary file.
byte[] transferDataContent;
if (!StorageMock.TryGetFile(model.TransferDataFileId, out transferDataContent))
{
return(HttpNotFound());
}
// Get an instance of the XmlElementSigner class.
var signer = new XmlElementSigner();
// Set the document to be signed and the policy, exactly like in the SignCodeh method
signer.SetXml(content);
signer.SetPolicy(getSignaturePolicy());
// Set the signature computed on the client-side, along with the "transfer data"
signer.SetPrecomputedSignature(model.Signature, transferDataContent);
// Call ComputeSignature(), which validates the signature of the "to-sign-hash" and finishes the signature process
signer.ComputeSignature();
// Get the signed XML as an array of bytes
signatureContent = signer.GetSignedXml();
} catch (ValidationException ex) {
// Some of the operations above may throw a ValidationException, for instance if the certificate is revoked.
ModelState.AddModelError("", ex.ValidationResults.ToString());
return(View());
}
// On the next step (SignatureInfo action), we'll render the following information:
// - The filename to be available to download in next action.
// We'll store these values on TempData, which is a dictionary shared between actions.
TempData["SignatureInfoModel"] = new SignatureInfoModel()
{
// Store the signature file on the folder "App_Data/" and redirect to the SignCodehResult action with the filename.
File = StorageMock.Store(signatureContent, ".xml")
};
return(RedirectToAction("SignCodehSignatureInfo"));
}
public ActionResult Complete(SignatureCompleteModel model)
{
byte[] signatureContent;
try {
// Recover the "transfer data" content stored in a temporary file.
byte[] transferDataContent;
if (!StorageMock.TryGetFile(model.TransferDataFileId, out transferDataContent))
{
return(HttpNotFound());
}
// Instantiate a XmlElementSigner class
var signer = new XmlElementSigner();
// Set the document to be signed and the policy, exactly like in the Start method
signer.SetXml(StorageMock.GetSampleNFeContent());
signer.SetPolicy(getSignaturePolicy());
// Set the signature computed on the client-side, along with the "transfer data" (rendered in a hidden field, see the view)
signer.SetPrecomputedSignature(model.Signature, transferDataContent);
// Call ComputeSignature(), which does all the work, including validation of the signer's certificate and of the resulting signature
signer.ComputeSignature();
// Get the signed XML as an array of bytes
signatureContent = signer.GetSignedXml();
} catch (ValidationException ex) {
// Some of the operations above may throw a ValidationException, for instance if the certificate is revoked.
ModelState.AddModelError("", ex.ValidationResults.ToString());
return(View());
}
// On the next step (SignatureInfo action), we'll render the following information:]
// - The filename to be available to download in next action.
// - The signer's certificate information to be rendered.
// We'll store these values on TempData, which is a dictionary shared between actions.
TempData["SignatureInfoModel"] = new SignatureInfoModel()
{
// Store the signature file on the folder "App_Data/" and redirects to the SignatureInfo action with the filename.
// With this filename, it can show a link to download the signature file.
File = StorageMock.Store(signatureContent, ".xml")
};
return(RedirectToAction("SignatureInfo"));
}
protected void SubmitSignatureButton_Click(object sender, EventArgs e)
{
byte[] signatureContent;
try {
// Instantiate a XmlElementSigner class.
var signer = new XmlElementSigner();
// Set the document to be signed and the policy, exactly like in the previous event
// (SubmitCertificateButton_Click).
signer.SetXml(Storage.GetSampleNFeContent());
signer.SetPolicy(getSignaturePolicy());
// Set the signature computed on the client-side, along with the "transfer data".
signer.SetPrecomputedSignature(Convert.FromBase64String(SignatureField.Value), Convert.FromBase64String(TransferDataField.Value));
// Call ComputeSignature(), which does all the work, including validation of the signer's
// certificate and of the resulting signature.
signer.ComputeSignature();
// Get the signed XML as an array of bytes
signatureContent = signer.GetSignedXml();
}
catch (ValidationException ex) {
// Some of the operations above may throw a ValidationException, for instance if the certificate
// is revoked.
ex.ValidationResults.Errors.ForEach(ve => ModelState.AddModelError("", ve.ToString()));
CertificateField.Value = "";
ToSignHashField.Value = "";
return;
}
// Pass the following fields to be used on XmlElementSignatureInfo page:
// - The signature file will be stored on the folder "App_Data/". Its name will be passed by
// SignatureFile field.
// - The user's certificate
this.SignatureFile = Storage.StoreFile(signatureContent, ".xml");
this.Certificate = PKCertificate.Decode(Convert.FromBase64String(CertificateField.Value));
Server.Transfer("XmlElementSignatureInfo.aspx");
}
public IHttpActionResult Complete(SignatureCompleteRequest request)
{
byte[] signatureContent;
try {
// Instantiate a XmlElementSigner class
var signer = new XmlElementSigner();
// Set the document to be signed and the policy, exactly like in the Start action
signer.SetXml(Storage.GetSampleNFeContent());
signer.SetPolicy(getSignaturePolicy());
// Set the signature computed on the client-side, along with the "transfer data"
signer.SetPrecomputedSignature(request.Signature, request.TransferData);
// Call ComputeSignature(), which does all the work, including validation of the signer's certificate and of the resulting signature
signer.ComputeSignature();
// Get the signed XML as an array of bytes
signatureContent = signer.GetSignedXml();
} catch (ValidationException ex) {
// Some of the operations above may throw a ValidationException, for instance if the certificate is revoked.
return(new ResponseMessageResult(Request.CreateResponse(HttpStatusCode.BadRequest, new ValidationErrorModel(ex.ValidationResults))));
}
// Pass the following fields to be used on signature-results template:
// - The signature file will be stored on the folder "App_Data/". Its name will be passed by Filename field.
// - The user's certificate
var response = new SignatureCompleteResponse()
{
Filename = Storage.StoreFile(signatureContent, ".xml"),
Certificate = new CertificateModel(PKCertificate.Decode(request.Certificate))
};
return(Ok(response));
}
