iTextSharp.text.pdf.security.LtvVerifier.CoversWholeDocument C# (CSharp) Method

        protected PdfPKCS7 CoversWholeDocument()
        {
            PdfPKCS7 pkcs7 = fields.VerifySignature(signatureName);
            if (fields.SignatureCoversWholeDocument(signatureName))
                LOGGER.Info("The timestamp covers whole document.");
            else throw new VerificationException(null, "Signature doesn't cover whole document.");
            if (pkcs7.Verify()) {
                LOGGER.Info("The signed document has not been modified.");
                return pkcs7;
            }
            throw new VerificationException(null, "The document was altered after the signature was applied.");
        }