public async Task <ActionResult> Complete(string id)
{
// Get an instance of the CadesSignatureFinisher2 class, responsible for completing the signature
// process.
var signatureFinisher = new CadesSignatureFinisher2(Util.GetRestPkiClient())
{
// Set the token for this signature. (rendered in a hidden input field, see the view)
Token = id
};
// Call the Finish() method, which finalizes the signature process and returns a
// SignatureResult object.
var result = await signatureFinisher.FinishAsync();
// The "Certificate" property of the SignatureResult object contains information about the
// certificate used by the user to sign the file.
var signerCert = result.Certificate;
// At this point, you'd typically store the signed PDF on your database. For demonstration
// purposes, we'll store the PDF on our mock Storage class.
// The SignatureResult object has various methods for writing the signature file to a stream
// (WriteTo()), local file (WriteToFile()), open a stream to read the content (OpenRead()) and
// get its contents (GetContent()). For large files, avoid the method GetContent() to avoid
// memory allocation issues.
string fileId;
using (var resultStream = result.OpenRead()) {
fileId = StorageMock.Store(resultStream, ".p7s");
}
// Return a JSON with the signed file's id, stored using our mock class (the page will use
// jQuery to decode this value).
return(Json(fileId));
}
public async Task <SignatureCompleteResponse> Complete(string token)
{
var storage = new Storage(hostingEnvironment);
var client = Util.GetRestPkiClient(restPkiConfig);
// Get an instance of the CadesSignatureFinisher2 class, responsible for completing the signature process
var signatureFinisher = new CadesSignatureFinisher2(client)
{
// Set the token for this signature (acquired previously and passed back here by the angular controller)
Token = token
};
// Call the FinishAsync() method, which finalizes the signature process and returns a SignatureResult object
var signatureResult = await signatureFinisher.FinishAsync();
// The "Certificate" property of the SignatureResult object contains information about the certificate used by the user
// to sign the file.
var signerCert = signatureResult.Certificate;
// At this point, you'd typically store the signed CMS on a database or storage service. For demonstration purposes, we'll
// store the CMS on our "storage mock", which in turn stores the CMS on the App_Data folder.
// The SignatureResult object has various methods for writing the signature file to a stream (WriteToAsync()), local file (WriteToFileAsync()),
// open a stream to read the content (OpenReadAsync()) and get its contents (GetContentAsync()). Avoid the method GetContentAsync() to prevent
// memory allocation issues with large files.
string filename;
using (var signatureStream = await signatureResult.OpenReadAsync()) {
filename = await storage.StoreAsync(signatureStream, ".p7s");
}
// Pass the following fields to be used on signature-results template:
// - The signature filename, which can be used to provide a link to the file
// - The user's certificate
var response = new SignatureCompleteResponse()
{
Filename = filename,
Certificate = new Models.CertificateModel(signerCert)
};
return(response);
}
public async Task <ActionResult> Index(SignatureModel model)
{
// Get an instance of the CadesSignatureFinisher2 class, responsible for completing the signature
// process.
var signatureFinisher = new CadesSignatureFinisher2(Util.GetRestPkiClient())
{
// Set the token for this signature (rendered in a hidden input field, see the view).
Token = model.Token
};
// Call the Finish() method, which finalizes the signature process and returns a
// SignatureResult object.
var result = await signatureFinisher.FinishAsync();
// The "Certificate" property of the SignatureResult object contains information about the
// certificate used by the user to sign the file.
var signerCert = result.Certificate;
// At this point, you'd typically store the CMS on your database. For demonstration
// purposes, we'll store the PDF on our mock Storage class.
// The SignatureResult object has various methods for writing the signature file to a stream
// (WriteTo()), local file (WriteToFile()), open a stream to read the content (OpenRead()) and
// get its contents (GetContent()). For large files, avoid the method GetContent() to avoid
// memory allocation issues.
string fileId;
using (var resultStream = result.OpenRead()) {
fileId = StorageMock.Store(resultStream, ".p7s");
}
// Render the signature information page.
return(View("SignatureInfo", new SignatureInfoModel()
{
File = fileId,
SignerCertificate = signerCert
}));
}