public static byte[] AssinarPDF(ref byte[] dadosArquivo)
{
var configuration = ConfigurationManager.ConfigurationManager.AppSettings;
Assinar objAssinar = new Assinar();
return(objAssinar.AssinarPdfStreamCert(ref dadosArquivo, configuration["Certificado:RepositorioCertificado"], configuration["Certificado:ThumberPrint"]));
}
private MemoryStream Assinar2(MemoryStream ArquivoOrigem, X509Certificate2 cert, ref byte[] pkcs7)
{
this.card = cert;
X509CertificateParser x509CertificateParser = new X509CertificateParser();
Org.BouncyCastle.X509.X509Certificate[] array = new Org.BouncyCastle.X509.X509Certificate[]
{
x509CertificateParser.ReadCertificate(this.card.RawData)
};
PdfReader reader = new PdfReader(ArquivoOrigem);
MemoryStream memoryStream = new MemoryStream();
PdfStamper pdfStamper = PdfStamper.CreateSignature(reader, memoryStream, '\0', null, true);
PdfSignatureAppearance signatureAppearance = pdfStamper.SignatureAppearance;
signatureAppearance.SetCrypto(null, array, null, PdfSignatureAppearance.SELF_SIGNED);
signatureAppearance.Reason = this.proposito;
signatureAppearance.Contact = this.contato;
signatureAppearance.Location = this.localizacao;
signatureAppearance.CryptoDictionary = new PdfSignature(PdfName.ADOBE_PPKLITE, new PdfName("adbe.pkcs7.detached"))
{
Reason = signatureAppearance.Reason,
Location = signatureAppearance.Location,
Contact = signatureAppearance.Contact,
Date = new PdfDate(signatureAppearance.SignDate)
};
int num = 15000;
Dictionary <PdfName, int> dictionary = new Dictionary <PdfName, int>();
dictionary[PdfName.CONTENTS] = num * 2 + 2;
signatureAppearance.PreClose(dictionary);
//PdfPKCS7 pdfPKCS = new PdfPKCS7(null, array, null, "SHA1", false);
PdfPKCS7 pdfPKCS = new PdfPKCS7(null, array, null, "MD5", false);
IDigest digest = DigestUtilities.GetDigest("MD5");
Stream rangeStream = signatureAppearance.GetRangeStream();
byte[] array2 = new byte[8192];
int length;
while ((length = rangeStream.Read(array2, 0, array2.Length)) > 0)
{
digest.BlockUpdate(array2, 0, length);
}
byte[] array3 = new byte[digest.GetDigestSize()];
digest.DoFinal(array3, 0);
DateTime now = DateTime.Now;
byte[] ocsp = null;
if (array.Length >= 2)
{
string oCSPURL = PdfPKCS7.GetOCSPURL(array[0]);
if (oCSPURL != null && oCSPURL.Length > 0)
{
ocsp = new OcspClientBouncyCastle().GetEncoded(array[0], array[1], oCSPURL);
}
}
byte[] authenticatedAttributeBytes = pdfPKCS.GetAuthenticatedAttributeBytes(array3, now, ocsp);
byte[] digest2 = Assinar.SignSHA1withRSA(this.card, authenticatedAttributeBytes);
pdfPKCS.SetExternalDigest(digest2, array3, "RSA");
byte[] array4 = new byte[num];
byte[] encodedPKCS = pdfPKCS.GetEncodedPKCS7(array3, now, null, ocsp);
pkcs7 = encodedPKCS;
Array.Copy(encodedPKCS, 0, array4, 0, encodedPKCS.Length);
if (num + 2 < encodedPKCS.Length)
{
throw new ApplicationException("Não há espaço suficiente para assinatura.");
}
PdfDictionary pdfDictionary = new PdfDictionary();
pdfDictionary.Put(PdfName.CONTENTS, new PdfString(array4).SetHexWriting(true));
signatureAppearance.Close(pdfDictionary);
//pdfStamper.
return(memoryStream);
}
