protected void Page_Load(object sender, EventArgs e)
{
// Get userfile from query string.
var userfile = Request.QueryString["userfile"];
// Our action only works if a userfile is given to work with.
if (string.IsNullOrEmpty(userfile))
{
// Return "Not Found" HTTP response.
Response.StatusCode = 404;
Response.End();
return;
}
// Read document from storage.
var fileContent = Storage.GetFile(userfile);
// Open an validate signatures with PKI SDK based on the PAdES Basic policy.
var signature = Lacuna.Pki.Pades.PadesSignature.Open(fileContent);
var policyMapper = PadesPoliciesForGeneration.GetPadesBasic(Util.GetTrustArbitrator());
// Generate a model to be shown on the page from the PadesSignature instance computed from Open()
// method above. This class can be inspected on SignatureModels.cs file. In this class, we validate
// each signature based on the policy mapper defined above.
var model = new PadesSignatureModel(signature, policyMapper);
// Set property for rendering on page (see aspx file).
this.Model = model;
}
protected void Page_Load(object sender, EventArgs e)
{
// Get verification code from query string.
var formattedVerificationCode = Request.QueryString["c"];
// On PrinterFriendlyVersion.aspx, we stored the unformatted version of the verification code
// (without hyphens) but used the formatted version (with hyphens) on the printer-friendly PDF. Now,
// we remove the hyphens before looking it up.
var verificationCode = AlphaCode.Parse(formattedVerificationCode);
// Get document associated with verification code.
var fileId = Storage.LookupVerificationCode(verificationCode);
if (fileId == null)
{
// Invalid code given!
// Small delay to slow down brute-force attacks (if you want to be extra careful you might want
// to add a CAPTCHA to the process).
Thread.Sleep(TimeSpan.FromSeconds(2));
// Return "Not Found" HTTP response.
Response.StatusCode = 404;
Response.End();
return;
}
// Read document from storage.
var fileContent = Storage.GetFile(fileId);
// Open and validate signatures with PKI SDK based on the PAdES Basic policy.
var signature = Lacuna.Pki.Pades.PadesSignature.Open(fileContent);
var policyMapper = PadesPoliciesForGeneration.GetPadesBasic(Util.GetTrustArbitrator());
// Generate a model to be shown on the page from the PadesSignature instance computed from Open()
// method above. This class can be inspected on SignatureModels.cs file. In this class, we validate
// each signature based on the policy mapper defined above.
var model = new PadesSignatureModel(signature, policyMapper);
// Set properties for rendering on page (see aspx file).
this.FileId = fileId;
this.Model = model;
}
