public override bool VerifyFile(string filePath, ref List <KeyValuePair <X509Certificate2, bool> > verifiedCMS)
{
PdfReader Reader = new PdfReader(filePath);
AcroFields Fields = Reader.AcroFields;
List <String> Names = Fields.GetSignatureNames();
List <KeyValuePair <X509Certificate2, bool> > UsedCertificates = new List <KeyValuePair <X509Certificate2, bool> >();
bool Validation = false;
foreach (String Signature in Names)
{
PdfPKCS7 CMS = Fields.VerifySignature(Signature);
bool currentValidation = CMS.Verify();
UsedCertificates.Add(new KeyValuePair <X509Certificate2, bool>(new X509Certificate2(DotNetUtils.ToX509Certificate(CMS.SigningCertificate)), currentValidation));
//If one signature fails, so does the global validation of the file
if (!currentValidation)
{
Validation = false;
}
}
verifiedCMS = UsedCertificates;
return(Validation);
}