Here it is my code. I can't understand this behaviour:
public static String signPdf(String alias,String reason, String location,
String signatureFieldName, String fileContentBase64, String role ) throws
IOException, DocumentException, GeneralSecurityException,
InvalidNameException
{
DebugTraces.trace("Init method signPdf", SignPDF.class.getName());
String fileSignedContentBase64 = null;
KeyStore ks = getKeyStore("Windows-MY");
boolean review = false;
//ks.load(new FileInputStream(path),
keystore_password.toCharArray());
PrivateKey pk = (PrivateKey)ks.getKey(alias, null);
Certificate[] chain = ks.getCertificateChain(alias);
Certificate cert= ks.getCertificate(alias);
X509Certificate cert2 = (X509Certificate) cert;
String CNCert="";
String dn = cert2.getSubjectX500Principal().getName();
//To take the signer Name
LdapName ldapDN = new LdapName(dn);
Rdn rdn;
for(int i=0;i< ldapDN.getRdns().size();i++) {
rdn = ldapDN.getRdn(i);
if(rdn.getType().equals("CN"))
{
CNCert=rdn.getValue().toString();
}
}
// reader and stamper
byte[] bytePdfFile = Base64Utils.base64Decode(fileContentBase64);
int numSig = 0;
try
{
numSig =
ValidatePdf.getNumberSignatures(bytePdfFile);
}
catch(Exception en)
{
numSig = 0;
}
if (numSig > 0)
{
review = true;
}
DebugTraces.trace("Number of Signatures: "+numSig,
SignPDF.class.getName());
PdfReader reader = new PdfReader(bytePdfFile);
ByteArrayOutputStream bout = new ByteArrayOutputStream();
PdfStamper stamper = PdfStamper.createSignature(reader, bout,
'\0',null,true);
stamper.setEncryption(null, null, PdfWriter.AllowPrinting,
PdfWriter.STRENGTH128BITS);
// appearance
PdfSignatureAppearance appearance =
stamper.getSignatureAppearance();
appearance.setCrypto(pk, chain, null,
PdfSignatureAppearance.WINCER_SIGNED);
appearance.setVisibleSignature(signatureFieldName);
appearance.setReason(reason);
appearance.setLocation(location);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss
Z");
//sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
String res= sdf.format(new Date());
res= res.substring(0, 23)+":"+res.substring(23);
appearance.setLayer2Font(new Font(Font.HELVETICA, 6, Font.NORMAL));
appearance.setLayer2Text("Digitally signed by "+CNCert+"\nSigned as:
"+role+"\nDate: " + res+"\nReason: "+reason+"\nLocation: "+location);
/*Calendar cal = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
cal.setTimeZone(TimeZone.getTimeZone("UTC"));
Date date = new Date(System.currentTimeMillis());
cal.setTime(date);
appearance.setSignDate(cal);*/
if(!review)
{
appearance.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_FORM_FILLI
NG);
}
else
{
appearance.setCertificationLevel(PdfSignatureAppearance.NOT_CERTIFIED);
}
appearance.setExternalDigest(null, new byte[20], null);
// signature
appearance.preClose();
MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
byte buf[] = new byte[8192];
int n;
InputStream inp = appearance.getRangeStream();
while((n=inp.read(buf))>0)
{
messageDigest.update(buf,0,n);
}
byte hash[] = messageDigest.digest();
PdfSigGenericPKCS sg = appearance.getSigStandard();
//PdfDate dat= new PdfDate(cal);
//sg.setDate(dat);
PdfLiteral slit = (PdfLiteral)sg.get(PdfName.CONTENTS);
byte[] outc = new byte[(slit.getPosLength() - 2) / 2];
PdfPKCS7 sig = sg.getSigner();
sig.setExternalDigest(null, hash, null);
//sig.setSignDate(cal);
PdfDictionary dic = new PdfDictionary();
byte[] ssig = sig.getEncodedPKCS7();
System.arraycopy(ssig, 0, outc, 0, ssig.length);
dic.put(PdfName.CONTENTS, new PdfString(outc).setHexWriting(true));
appearance.close(dic);
fileSignedContentBase64 =
Base64Utils.base64Encode(bout.toByteArray());
DebugTraces.trace("End method signPdf",
SignPDF.class.getName());
return fileSignedContentBase64;
}
-----Mensaje original-----
De: mkl [mailto:m...@wir-sind-cool.org]
Enviado el: viernes, 08 de noviembre de 2013 22:04
Para: itext-questions@lists.sourceforge.net
Asunto: [iText-questions] [SPAM] Re: [SPAM] Re: Problem with E-signature and
iText
Aritz,
Aritz_85 wrote
> Tomorrow I'll try to send you my code.
Please also supply a sample PDF illustrating the issue.
I have to admit, though, that I only have Acrobat 9.5 at my hands currently
and, therefore, possibly am not able to reproduce the issue.
Regards, Michael
--
View this message in context:
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t-tp4659420p4659425.html
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iText(R) is a registered trademark of 1T3XT BVBA.
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