Example usage for com.itextpdf.text.pdf.security PdfPKCS7 isRevocationValid

Introduction

In this page you can find the example usage for com.itextpdf.text.pdf.security PdfPKCS7 isRevocationValid.

Prototype

public boolean isRevocationValid() 

Source Link

Document

Checks if OCSP revocation refers to the document signing certificate.

Usage

From source file:controller.CCInstance.java

License:Open Source License

public final ArrayList<SignatureValidation> validatePDF(final String file, final ValidationListener vl)
        throws IOException, DocumentException, GeneralSecurityException {
    this.validating = true;

    final PdfReader reader = new PdfReader(file);
    final AcroFields af = reader.getAcroFields();
    final ArrayList names = af.getSignatureNames();
    final ArrayList<SignatureValidation> validateList = new ArrayList<>();
    X509Certificate x509c = null;

    Security.setProperty("ocsp.enable", "true");
    System.setProperty("com.sun.security.enableCRLDP", "true");

    boolean nextValid = true;

    for (Object o : names) {
        if (!validating) {
            return null;
        }/*from   w ww .  j a v  a 2 s. c o m*/

        final String name = (String) o;
        final PdfPKCS7 pk = af.verifySignature(name, "BC");
        final Certificate pkc[] = pk.getCertificates();
        x509c = (X509Certificate) pkc[pkc.length - 1];

        final Certificate[] aL = pkc;//getCompleteCertificateChain(x509c);

        if (null == aL || 0 == aL.length) {
            return null;
        }

        CertificateStatus ocspCertificateStatus = CertificateStatus.UNCHECKED;

        BasicOCSPResp ocspResp = pk.getOcsp();
        if (null != ocspResp && pk.isRevocationValid()) {
            for (SingleResp singleResp : ocspResp.getResponses()) {
                if (null == singleResp.getCertStatus()) {
                    ocspCertificateStatus = CertificateStatus.OK;
                } else if (singleResp.getCertStatus() instanceof RevokedStatus) {
                    if (ocspResp.getProducedAt()
                            .before(((RevokedStatus) singleResp.getCertStatus()).getRevocationTime())) {
                        ocspCertificateStatus = CertificateStatus.OK;
                    } else {
                        ocspCertificateStatus = CertificateStatus.REVOKED;
                    }
                } else if (singleResp.getCertStatus() instanceof UnknownStatus) {
                    ocspCertificateStatus = CertificateStatus.UNKNOWN;
                }
            }
        }

        CertificateStatus crlCertificateStatus = CertificateStatus.UNCHECKED;
        Collection<CRL> crlResp = pk.getCRLs();
        if (null != crlResp) {
            boolean revoked = false;
            for (CRL crl : crlResp) {
                if (crl.isRevoked(x509c)) {
                    revoked = true;
                }
            }
            crlCertificateStatus = revoked ? CertificateStatus.REVOKED : CertificateStatus.OK;
        }

        if (ocspCertificateStatus.equals(CertificateStatus.UNCHECKED)
                && crlCertificateStatus.equals(CertificateStatus.UNCHECKED)) {
            if (pkc.length == 1) {
                Certificate[] completeChain = getCompleteTrustedCertificateChain(x509c);
                if (completeChain.length == 1) {
                    ocspCertificateStatus = CertificateStatus.UNCHAINED;
                } else {
                    ocspCertificateStatus = CertificateStatus.CHAINED_LOCALLY;
                }
            }
        }

        final TimeStampToken tst = pk.getTimeStampToken();
        boolean validTimestamp = false;
        if (null != tst) {
            final boolean hasTimestamp = pk.verifyTimestampImprint();
            validTimestamp = hasTimestamp && CertificateVerification.verifyTimestampCertificates(tst, ks, null);
        }

        PdfDictionary pdfDic = reader.getAcroFields().getSignatureDictionary(name);
        SignaturePermissions sp = new SignaturePermissions(pdfDic, null);

        boolean isValid;
        if (nextValid) {
            isValid = pk.verify();
        } else {
            isValid = false;
        }

        List<AcroFields.FieldPosition> posList = af.getFieldPositions(name);
        final SignatureValidation signature = new SignatureValidation(file, name, pk, !pk.verify(),
                af.signatureCoversWholeDocument(name), af.getRevision(name), af.getTotalRevisions(),
                reader.getCertificationLevel(), ocspCertificateStatus, crlCertificateStatus, validTimestamp,
                posList, sp, isValid);
        validateList.add(signature);

        if (null != vl) {
            vl.onValidationComplete(signature);
        }
        if (!sp.isFillInAllowed()) {
            nextValid = false;
        }
    }
    return validateList;
}

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From source file:ec.rubrica.pdf.FirmaPDF.java

License:Open Source License

/**
 * TODO: Mas de dos firmas?//from  w  ww  . j a v  a2 s . c om
 * 
 * @param pdf
 * @throws IOException
 * @throws SignatureException
 */
public static boolean verificar(byte[] pdf) throws IOException, SignatureException {

    PdfReader reader = new PdfReader(pdf);
    AcroFields af = reader.getAcroFields();
    ArrayList<String> 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));
        System.out.println("Document revision: " + af.getRevision(name) + " of " + af.getTotalRevisions());

        PdfPKCS7 pk = af.verifySignature(name);
        Calendar cal = pk.getSignDate();
        Certificate[] pkc = pk.getCertificates();
        TimeStampToken ts = pk.getTimeStampToken();

        if (ts != null) {
            cal = pk.getTimeStampDate();
        }

        if (!pk.isTsp() && ts != null) {
            boolean impr;
            try {
                impr = pk.verifyTimestampImprint();
                System.out.println("Timestamp imprint verifies: " + impr);
                System.out.println("Timestamp date: " + cal);
            } catch (NoSuchAlgorithmException e) {
                throw new SignatureException(e);
            }
        }

        System.out.println("Subject: " + CertificateInfo.getSubjectFields(pk.getSigningCertificate()));
        System.out.println("Document modified: " + !pk.verify());

        KeyStore kall = KeyStoreUtil.loadCacertsKeyStore();

        Object fails[] = CertificateVerification.verifyCertificates(pkc, kall, null, cal);

        if (fails == null) {
            System.out.println("Certificates verified against the KeyStore");
        } else {
            System.out.println("Certificate failed: " + fails[0]);
            return false;
        }

        BasicOCSPResp ocsp = pk.getOcsp();

        if (ocsp != null) {
            try {
                X509Certificate cert = new SecurityDataSubCaCert();

                boolean verifies = ocsp.isSignatureValid(new JcaContentVerifierProviderBuilder()
                        .setProvider(BouncyCastleProvider.PROVIDER_NAME).build(cert.getPublicKey()));

                System.out.println("OCSP signature verifies: " + verifies);

                System.out.println("OCSP revocation refers to this certificate: " + pk.isRevocationValid());

                return verifies;
            } catch (OperatorCreationException e) {
                throw new SignatureException(e);
            } catch (OCSPException e) {
                throw new SignatureException(e);
            }
        } else {
            return true;
        }
    }

    return false;
}

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