Examples of com.itextpdf.text.pdf.AcroFields.verifySignature()

com.itextpdf.text.pdf.AcroFields.verifySignature()

Verifies a signature. An example usage is:

 KeyStore kall = PdfPKCS7.loadCacertsKeyStore(); PdfReader reader = new PdfReader("my_signed_doc.pdf"); AcroFields af = reader.getAcroFields(); ArrayList names = af.getSignatureNames(); for (int k = 0; k < names.size(); ++k) { String name = (String)names.get(k); System.out.println("Signature name: " + name); System.out.println("Signature covers whole document: " + af.signatureCoversWholeDocument(name)); PdfPKCS7 pk = af.verifySignature(name); Calendar cal = pk.getSignDate(); Certificate pkc[] = pk.getCertificates(); System.out.println("Subject: " + PdfPKCS7.getSubjectFields(pk.getSigningCertificate())); System.out.println("Document modified: " + !pk.verify()); Object fails[] = PdfPKCS7.verifyCertificates(pkc, kall, null, cal); if (fails == null) System.out.println("Certificates verified against the KeyStore"); else System.out.println("Certificate failed: " + fails[1]); }

@param name the signature field name @return a PdfPKCS7 class to continue the verification

      Collection<Signature> signatures = new ArrayList<Signature>();
      if (fields != null) {
        List<String> list = fields.getSignatureNames();
        if ((list != null) && (!list.isEmpty())) {
          for (String str : list) {
            PdfPKCS7 pk = fields.verifySignature(str);


            PdfString string = fields.getSignatureDictionary(str).getAsString(PdfName.CONTENTS);
            byte[] content = string.getBytes();


            X509Certificate certificate = pk.getSigningCertificate();

      Collection<Signature> signatures = new ArrayList<Signature>();
      if (fields != null) {
        List<String> list = fields.getSignatureNames();
        if ((list != null) && (!list.isEmpty())) {
          for (String str : list) {
            PdfPKCS7 pk = fields.verifySignature(str);


            PdfString string = fields.getSignatureDictionary(str).getAsString(PdfName.CONTENTS);
            byte[] content = string.getBytes();


            X509Certificate certificate = pk.getSigningCertificate();

      Collection<Signature> signatures = new ArrayList<Signature>();
      if (fields != null) {
        List<String> list = fields.getSignatureNames();
        if ((list != null) && (!list.isEmpty())) {
          for (String str : list) {
            PdfPKCS7 pk = fields.verifySignature(str);


            PdfString string = fields.getSignatureDictionary(str).getAsString(PdfName.CONTENTS);
            byte[] content = string.getBytes();


            X509Certificate certificate = pk.getSigningCertificate();

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