Hi, I reviewed the forum answers and generated a code as below. But the signed pdf gives an error while verification.Please show me what is wrong on that. I enclosed the out.pdf also..
ps: I have got the certificate after signing so i used that code sample
getting from forum answers.
Regards,
Here is the sample code:
*
// reader and stamper
PdfReader reader = new PdfReader(src);
FileStream fout = new FileStream(dest, FileMode.Create);
PdfStamper stp = PdfStamper.CreateSignature(reader, fout, '\0');
byte[] hash = new byte[20];
byte[] pk = new byte[128];
PdfSignatureAppearance sap = stp.SignatureAppearance;
sap.SignDate = DateTime.Now.Date;
sap.SetExternalDigest(pk, hash, "RSA");
sap.Reason = "Mobile Sign";
sap.Location= "Anywhere";
sap.Acro6Layers = true;
sap.Layer2Text = "Mobile
Signing\n"+sap.Reason+"\n"+sap.Location;
PdfSignature sigDic = new PdfSignature(PdfName.ADOBE_PPKMS,
PdfName.ADBE_PKCS7_DETACHED);
sigDic.Put(PdfName.FT, PdfName.SIG);
sigDic.Date = (new PdfDate(sap.SignDate));
sigDic.Reason = "Mobile Signing";
sigDic.Location = "Anywhere";
sigDic.Contact = "ME";
sap.SetVisibleSignature(new Rectangle(50, 10, 240, 70),
reader.NumberOfPages, "İmza");
sap.Layer2Font = (FontFactory.GetFont(FontFactory.TIMES,
"windows-1254", 8));
sap.CryptoDictionary = sigDic;
sap.SetExternalDigest(pk, hash, "RSA");
int csize = 4000;
Dictionary<PdfName,int> exc = new Dictionary<PdfName,int>();
exc.Add(PdfName.CONTENTS, csize * 2 + 2);
sap.PreClose(exc);
hash = getPdfHash(sap.RangeStream);
MobileSignAPI msa= new MobileSignAPI();
msa.Sign("053xxxxxxxx", "sign", encodeTo64(hash), "pdf
signing", 120);
pk = base64DecodeToByteArr(msa.getSignatureValue));
sap.SetExternalDigest(pk, hash, "RSA");
byte[] outc = new byte[csize];
PdfDictionary dic2 = new PdfDictionary();
Array.Copy(pk, 0, outc, 0, pk.Length);
dic2.Put(PdfName.CONTENTS, new
PdfString(outc).SetHexWriting(true));
sap.Close(dic2);
Console.Read();
*
outpdf.pdf
Description: Adobe PDF document
------------------------------------------------------------------------------ Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure
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