public byte[] signWithPfxFile(string pfxFile, string pinCode, byte[] tobeSignBytes)
{
BaseSignedData bs = new BaseSignedData();
tr.gov.tubitak.uekae.esya.api.cmssignature.ISignable content = new SignableByteArray(tobeSignBytes);
bs.addContent(content);
//Since SigningTime attribute is optional,add it to optional attributes list
List <IAttribute> optionalAttributes = new List <IAttribute>();
optionalAttributes.Add(new SigningTimeAttr(DateTime.UtcNow));
Dictionary <string, object> params_ = new Dictionary <string, object>();
ValidationPolicy policy = getPolicy();
//necessary for certificate validation.By default,certificate validation is done
params_[EParameters.P_CERT_VALIDATION_POLICY] = policy;
//if the user does not want certificate validation,he can add
//P_VALIDATE_CERTIFICATE_BEFORE_SIGNING parameter with its value set to false
params_[EParameters.P_VALIDATE_CERTIFICATE_BEFORE_SIGNING] = false;
PfxSigner signer = new PfxSigner(SignatureAlg.RSA_SHA256.getName(), pfxFile, pinCode);
ECertificate signatureCertificate = signer.getSignersCertificate();
bs.addSigner(ESignatureType.TYPE_BES, signatureCertificate, signer, optionalAttributes, params_);
return(bs.getEncoded());
}
public byte[] signPdfWithPfxFile(string pfxFile, string pinCode, string pdfFileName)
{
PfxSigner signer = new PfxSigner(SignatureAlg.RSA_SHA256.getName(), pfxFile, pinCode);
ECertificate signatureCertificate = signer.getSignersCertificate();
Pkcs12Store store = new Pkcs12Store(new FileStream(pfxFile, FileMode.Open), pinCode.ToCharArray());
String alias = "";
string dest = AppDomain.CurrentDomain.BaseDirectory + "\\tmp.pdf";
if (File.Exists(dest))
{
File.Delete(dest);
}
ICollection <Org.BouncyCastle.X509.X509Certificate> chain = new List <Org.BouncyCastle.X509.X509Certificate>();
// searching for private key
foreach (string al in store.Aliases)
{
if (store.IsKeyEntry(al) && store.GetKey(al).Key.IsPrivate)
{
alias = al;
break;
}
}
AsymmetricKeyEntry pk = store.GetKey(alias);
foreach (X509CertificateEntry c in store.GetCertificateChain(alias))
{
chain.Add(c.Certificate);
}
RsaPrivateCrtKeyParameters parameters = pk.Key as RsaPrivateCrtKeyParameters;
// Creating the reader and the stamper
PdfReader reader = new PdfReader(pdfFileName);
FileStream os = new FileStream(dest, FileMode.Create);
PdfStamper stamper = PdfStamper.CreateSignature(reader, os, '\0');
// Creating the appearance
PdfSignatureAppearance appearance = stamper.SignatureAppearance;
appearance.Reason = "";
appearance.Location = "";
//appearance.SetVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");//don't show rectangle on pdf
// Creating the signature
IExternalSignature pks = new PrivateKeySignature(parameters, DigestAlgorithms.SHA256);
MakeSignature.SignDetached(appearance, pks, chain, null, null, null, 0, CryptoStandard.CADES);
byte[] buffer = File.ReadAllBytes(dest);
File.Delete(dest);
return(buffer);
}
