public ActionResult Start(BatchSignatureStartRequest request)
{
// Recover the batch information based on its ID, which contains the user's certificate
var batchInfo = batches[request.BatchId];
// Get an instance of the PadesSignatureStarter class, responsible for receiving the signature elements and start the
// signature process
var signatureStarter = new PadesSignatureStarter(Util.GetRestPkiClient())
{
// Set the user's certificate. Notice that this step is not necessary on the regular batch signature example. This
// enhances the performance of the batch processing
SignerCertificate = Convert.FromBase64String(batchInfo.Certificate),
// Set the signature policy
SignaturePolicyId = StandardPadesSignaturePolicies.Basic,
// Set a SecurityContext to be used to determine trust in the certificate chain
SecurityContextId = StandardSecurityContexts.PkiBrazil,
// Note: By changing the SecurityContext above you can accept certificates from a custom security context created on the Rest PKI website.
// Set a visual representation for the signature
VisualRepresentation = new PadesVisualRepresentation()
{
// The tags {{signerName}} and {{signerNationalId}} will be substituted according to the user's certificate
// signerName -> full name of the signer
// signerNationalId -> if the certificate is ICP-Brasil, contains the signer's CPF
Text = new PadesVisualText("Signed by {{signerName}} ({{signerNationalId}})")
{
// Specify that the signing time should also be rendered
IncludeSigningTime = true,
// Optionally set the horizontal alignment of the text ('Left' or 'Right'), if not set the default is Left
HorizontalAlign = PadesTextHorizontalAlign.Left
},
// We'll use as background the image in Content/PdfStamp.png
Image = new PadesVisualImage(Util.GetPdfStampContent(), "image/png")
{
// Opacity is an integer from 0 to 100 (0 is completely transparent, 100 is completely opaque).
Opacity = 50,
// Align the image to the right
HorizontalAlign = PadesHorizontalAlign.Right
},
// Position of the visual representation. We have encapsulated this code in a method to include several
// possibilities depending on the argument passed. Experiment changing the argument to see different examples
// of signature positioning. Once you decide which is best for your case, you can place the code directly here.
Position = getVisualPositioning(1)
}
};
// Set the document to be signed based on its ID (passed to us from the page)
signatureStarter.SetPdfToSign(Util.GetBatchDocContent(request.DocumentId));
// Call the Start() method, which initiates the signature. Notice that, on the regular signature example, we call the
// StartWithRestPki() method, which is simpler but with worse performance. The Start() method will yield not only the
// token, a 43-character case-sensitive URL-safe string which identifies this signature process, but also the data
// that should be used to call the signHash() function on the Web PKI component (instead of the signWithRestPki()
// function, which is also simpler but far slower).
var signatureParams = signatureStarter.Start();
// Notice: it is not necessary to call SetNoCacheHeaders() because this action is a POST action, therefore no caching
// of the response will be made by browsers.
// Return a JSON with the token obtained from REST PKI, along with the parameters for the signHash() call
// (the page will use jQuery to decode this value)
var response = new BatchSignatureStartResponse()
{
Token = signatureParams.Token,
ToSignHash = Convert.ToBase64String(signatureParams.ToSignHash),
DigestAlgorithmOid = signatureParams.DigestAlgorithmOid
};
return(Json(response));
}
public ActionResult Start(BatchSignatureStartRequest request)
{
// Recover the batch information based on its ID, which contains the user's certificate
var batchInfo = batches[request.BatchId];
// Get an instance of the PadesSignatureStarter class, responsible for receiving the signature elements and start the
// signature process
var signatureStarter = new PadesSignatureStarter(Util.GetRestPkiClient()) {
// Set the user's certificate. Notice that this step is not necessary on the regular batch signature example. This
// enhances the performance of the batch processing
SignerCertificate = batchInfo.Certificate,
// Set the signature policy
SignaturePolicyId = StandardPadesSignaturePolicies.Basic,
// Set a SecurityContext to be used to determine trust in the certificate chain
SecurityContextId = StandardSecurityContexts.PkiBrazil,
// Note: By changing the SecurityContext above you can accept certificates from a custom security context created on the Rest PKI website.
// Set a visual representation for the signature
VisualRepresentation = new PadesVisualRepresentation() {
// The tags {{signerName}} and {{signerNationalId}} will be substituted according to the user's certificate
// signerName -> full name of the signer
// signerNationalId -> if the certificate is ICP-Brasil, contains the signer's CPF
Text = new PadesVisualText("Signed by {{signerName}} ({{signerNationalId}})") {
// Specify that the signing time should also be rendered
IncludeSigningTime = true,
// Optionally set the horizontal alignment of the text ('Left' or 'Right'), if not set the default is Left
HorizontalAlign = PadesTextHorizontalAlign.Left
},
// We'll use as background the image in Content/PdfStamp.png
Image = new PadesVisualImage(Util.GetPdfStampContent(), "image/png") {
// Opacity is an integer from 0 to 100 (0 is completely transparent, 100 is completely opaque).
Opacity = 50,
// Align the image to the right
HorizontalAlign = PadesHorizontalAlign.Right
},
// Position of the visual representation. We have encapsulated this code in a method to include several
// possibilities depending on the argument passed. Experiment changing the argument to see different examples
// of signature positioning. Once you decide which is best for your case, you can place the code directly here.
Position = getVisualPositioning(1)
}
};
// Set the document to be signed based on its ID (passed to us from the page)
signatureStarter.SetPdfToSign(Util.GetBatchDocContent(request.DocumentId));
// Call the Start() method, which initiates the signature. Notice that, on the regular signature example, we call the
// StartWithRestPki() method, which is simpler but with worse performance. The Start() method will yield not only the
// token, a 43-character case-sensitive URL-safe string which identifies this signature process, but also the data
// that should be used to call the signHash() function on the Web PKI component (instead of the signWithRestPki()
// function, which is also simpler but far slower).
var signatureParams = signatureStarter.Start();
// Notice: it is not necessary to call SetNoCacheHeaders() because this action is a POST action, therefore no caching
// of the response will be made by browsers.
// Return a JSON with the token obtained from REST PKI, along with the parameters for the signHash() call
// (the page will use jQuery to decode this value)
var response = new BatchSignatureStartResponse() {
Token = signatureParams.Token,
ToSignHash = signatureParams.ToSignHash,
DigestAlgorithmOid = signatureParams.DigestAlgorithmOid
};
return Json(response);
}
