Example usage for org.bouncycastle.cms SignerInformation getSignedAttributes

List of usage examples for org.bouncycastle.cms SignerInformation getSignedAttributes

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Introduction

In this page you can find the example usage for org.bouncycastle.cms SignerInformation getSignedAttributes.

Prototype

public AttributeTable getSignedAttributes()

Source Link

Document

return a table of the signed attributes - indexed by the OID of the attribute.

Usage

From source file:org.jnotary.crypto.SignAndVerifyTest.java

License:Open Source License

private void verify(TrustedStore trustedUserCertificateStore) throws Exception {

    File file = new File("/tmp/s1.dat");
    byte[] signedData = new byte[(int) file.length()];
    DataInputStream dis = new DataInputStream(new FileInputStream(file));
    dis.readFully(signedData);/*from   w  w  w. jav  a2s  .c  o m*/
    dis.close();

    Verifier verifier = new Verifier();
    VerifyResult result = verifier.verifySignature(signedData, trustedUserCertificateStore);
    assertTrue("Data is incorrect", Arrays.equals(result.getContent(), "Hello world!!".getBytes()));
    for (SignerInformation signerInfo : result.getSigners()) {
        final Attribute attribute = (Attribute) signerInfo.getSignedAttributes()
                .getAll(CMSAttributes.signingTime).get(0);
        final Date date = Time.getInstance(attribute.getAttrValues().getObjectAt(0)).getDate();

        System.out.println(date.toString() + " " + signerInfo.getSID());
    }

}

From source file:org.jnotary.crypto.Verifier.java

License:Open Source License

private void verifyDate(SignerInformation signer, java.security.cert.X509Certificate cert) throws Exception {
    final Attribute attribute = (Attribute) signer.getSignedAttributes().getAll(CMSAttributes.signingTime)
            .get(0);/*from w ww  .  ja  va  2  s  .  com*/
    Date date = null;
    if (attribute != null)
        date = Time.getInstance(attribute.getAttrValues().getObjectAt(0)).getDate();

    if (date != null) {
        Date notAfter = cert.getNotAfter();
        Date notBefore = cert.getNotBefore();
        if (notAfter != null && date.compareTo(notAfter) > 0) {
            throw new Exception(
                    "Signature verification failed (bad signing time) for " + cert.getSubjectDN().toString());
        }
        if (notBefore != null && date.compareTo(notBefore) < 0) {
            throw new Exception(
                    "Signature verification failed (bad signing time) for " + cert.getSubjectDN().toString());
        }
    }
}

From source file:org.signserver.module.tsa.TimeStampSignerTest.java

License:Open Source License

private int testWithHash(final ASN1ObjectIdentifier hashAlgo) throws Exception {
    int reqid = random.nextInt();
    TimeStampRequestGenerator timeStampRequestGenerator = new TimeStampRequestGenerator();
    final TimeStampRequest timeStampRequest = timeStampRequestGenerator.generate(hashAlgo,
            new byte[getHashLength(hashAlgo)], BigInteger.valueOf(100));

    byte[] requestBytes = timeStampRequest.getEncoded();

    GenericSignRequest signRequest = new GenericSignRequest(reqid, requestBytes);

    final GenericSignResponse res = (GenericSignResponse) workerSession.process(WORKER1, signRequest,
            new RequestContext());

    final CertificateFactory factory = CertificateFactory.getInstance("X.509");
    final X509Certificate cert = (X509Certificate) factory
            .generateCertificate(new ByteArrayInputStream(Base64.decode(CERTSTRING.getBytes())));

    TimeStampResponse timeStampResponse = null;
    try {/* w w  w. jav a  2s. c om*/
        // check response
        timeStampResponse = new TimeStampResponse((byte[]) res.getProcessedData());
        timeStampResponse.validate(timeStampRequest);

        if (timeStampResponse.getStatus() != PKIStatus.GRANTED) {
            // return early and don't attempt to get a token
            return timeStampResponse.getStatus();
        }

        // check the hash value from the response
        TimeStampToken token = timeStampResponse.getTimeStampToken();
        AlgorithmIdentifier algo = token.getTimeStampInfo().getHashAlgorithm();
        assertEquals("Timestamp response is using incorrect hash algorithm", hashAlgo, algo.getAlgorithm());

        Collection signerInfos = token.toCMSSignedData().getSignerInfos().getSigners();

        // there should be one SignerInfo
        assertEquals("There should only be one signer in the timestamp response", 1, signerInfos.size());

        for (Object o : signerInfos) {
            SignerInformation si = (SignerInformation) o;

            // test the response signature algorithm
            assertEquals("Timestamp used unexpected signature algorithm", TSPAlgorithms.SHA1.toString(),
                    si.getDigestAlgOID());
            assertEquals("Timestamp is signed with unexpected signature encryption algorithm",
                    "1.2.840.113549.1.1.1", si.getEncryptionAlgOID());

            final AttributeTable attrs = si.getSignedAttributes();
            final ASN1EncodableVector scAttrs = attrs.getAll(PKCSObjectIdentifiers.id_aa_signingCertificate);

            assertEquals("Should contain a signingCertificate signed attribute", 1, scAttrs.size());

            TestUtils.checkSigningCertificateAttribute(ASN1Sequence.getInstance(scAttrs.get(0)), cert);
        }

    } catch (TSPException e) {
        fail("Failed to verify response");
    } catch (IOException e) {
        fail("Failed to verify response");
    }

    final TimeStampToken token = timeStampResponse.getTimeStampToken();

    try {

        token.validate(cert, "BC");

    } catch (TSPException e) {
        fail("Failed to validate response token");
    }

    return timeStampResponse.getStatus();
}

From source file:org.votingsystem.callable.MessageTimeStamper.java

License:Open Source License

public byte[] getDigestToken() {
    if (timeStampToken == null)
        return null;
    CMSSignedData tokenCMSSignedData = timeStampToken.toCMSSignedData();
    Collection signers = tokenCMSSignedData.getSignerInfos().getSigners();
    SignerInformation tsaSignerInfo = (SignerInformation) signers.iterator().next();
    AttributeTable signedAttrTable = tsaSignerInfo.getSignedAttributes();
    ASN1EncodableVector v = signedAttrTable.getAll(CMSAttributes.messageDigest);
    Attribute t = (Attribute) v.get(0);
    ASN1Set attrValues = t.getAttrValues();
    DERObject validMessageDigest = attrValues.getObjectAt(0).getDERObject();
    ASN1OctetString signedMessageDigest = (ASN1OctetString) validMessageDigest;
    byte[] digestToken = signedMessageDigest.getOctets();
    //String digestTokenStr = new String(Base64.encode(digestToken));
    //log.info(" digestTokenStr: " + digestTokenStr);
    return digestToken;
}

From source file:org.votingsystem.signature.smime.SMIMEMessage.java

License:Open Source License

public TimeStampRequest getTimeStampRequest() throws Exception {
    SignerInformation signerInformation = ((SignerInformation) getSmimeSigned().getSignerInfos().getSigners()
            .iterator().next());/*from  ww w .  j ava  2s  . com*/
    AttributeTable table = signerInformation.getSignedAttributes();
    Attribute hash = table.get(CMSAttributes.messageDigest);
    ASN1OctetString as = ((ASN1OctetString) hash.getAttrValues().getObjectAt(0));
    TimeStampRequestGenerator reqgen = new TimeStampRequestGenerator();
    //reqgen.setReqPolicy(m_sPolicyOID);
    return reqgen.generate(signerInformation.getDigestAlgOID(), as.getOctets(),
            BigInteger.valueOf(KeyGeneratorVS.INSTANCE.getNextRandomInt()));
}

From source file:org.votingsystem.signature.smime.SMIMESignedValidator.java

License:Open Source License

public static Date getSigningTime(SignerInformation signerInformation) {
    AttributeTable signedAttr = signerInformation.getSignedAttributes();
    Attribute signingTime = signedAttr.get(CMSAttributes.signingTime);
    if (signingTime != null) {
        try {//from w w w.  j ava2  s .c o m
            Enumeration en = signingTime.getAttrValues().getObjects();
            while (en.hasMoreElements()) {
                Object obj = en.nextElement();
                if (obj instanceof ASN1UTCTime) {
                    ASN1UTCTime asn1Time = (ASN1UTCTime) obj;
                    return asn1Time.getDate();
                } else if (obj instanceof DERUTCTime) {
                    DERUTCTime derTime = (DERUTCTime) obj;
                    return derTime.getDate();
                }
            }
        } catch (Exception ex) {
            log.log(Level.SEVERE, ex.getMessage(), ex);
        }
    }
    return null;
}

From source file:org.votingsystem.signature.util.CMSUtils.java

License:Open Source License

public static byte[] getSignerDigest(SignerInformation signer) throws CMSException {
    DERObject derObject = CMSUtils.getSingleValuedSignedAttribute(signer.getSignedAttributes(),
            CMSAttributes.messageDigest, "message-digest");
    ASN1OctetString signedMessageDigest = (ASN1OctetString) derObject;
    return signedMessageDigest.getOctets();
}

From source file:org.votingsystem.signature.util.CMSUtils.java

License:Open Source License

public static byte[] getDigestToken(TimeStampToken timeStampToken) {
    if (timeStampToken == null)
        return null;
    CMSSignedData tokenCMSSignedData = timeStampToken.toCMSSignedData();
    Collection signers = tokenCMSSignedData.getSignerInfos().getSigners();
    SignerInformation tsaSignerInfo = (SignerInformation) signers.iterator().next();

    AttributeTable signedAttrTable = tsaSignerInfo.getSignedAttributes();
    ASN1EncodableVector v = signedAttrTable.getAll(CMSAttributes.messageDigest);
    Attribute t = (Attribute) v.get(0);
    ASN1Set attrValues = t.getAttrValues();
    DERObject validMessageDigest = attrValues.getObjectAt(0).getDERObject();

    ASN1OctetString signedMessageDigest = (ASN1OctetString) validMessageDigest;
    byte[] digestToken = signedMessageDigest.getOctets();
    //String digestTokenStr = new String(Base64.encode(digestToken));
    return digestToken;
}

From source file:org.xipki.pki.scep.message.DecodedNextCaMessage.java

License:Open Source License

@SuppressWarnings("unchecked")
public static DecodedNextCaMessage decode(final CMSSignedData pkiMessage,
        final CollectionStore<X509CertificateHolder> certStore) throws MessageDecodingException {
    ParamUtil.requireNonNull("pkiMessage", pkiMessage);

    SignerInformationStore signerStore = pkiMessage.getSignerInfos();
    Collection<SignerInformation> signerInfos = signerStore.getSigners();
    if (signerInfos.size() != 1) {
        throw new MessageDecodingException("number of signerInfos is not 1, but " + signerInfos.size());
    }//from  w  w  w  . j av a2 s  .  c o m

    SignerInformation signerInfo = signerInfos.iterator().next();

    SignerId sid = signerInfo.getSID();

    Collection<?> signedDataCerts = null;
    if (certStore != null) {
        signedDataCerts = certStore.getMatches(sid);
    }

    if (signedDataCerts == null || signedDataCerts.isEmpty()) {
        signedDataCerts = pkiMessage.getCertificates().getMatches(signerInfo.getSID());
    }

    if (signedDataCerts == null || signedDataCerts.size() != 1) {
        throw new MessageDecodingException("could not find embedded certificate to verify the signature");
    }

    AttributeTable signedAttrs = signerInfo.getSignedAttributes();
    if (signedAttrs == null) {
        throw new MessageDecodingException("missing signed attributes");
    }

    Date signingTime = null;
    // signingTime
    ASN1Encodable attrValue = ScepUtil.getFirstAttrValue(signedAttrs, CMSAttributes.signingTime);
    if (attrValue != null) {
        signingTime = Time.getInstance(attrValue).getDate();
    }

    DecodedNextCaMessage ret = new DecodedNextCaMessage();
    if (signingTime != null) {
        ret.setSigningTime(signingTime);
    }

    ASN1ObjectIdentifier digestAlgOid = signerInfo.getDigestAlgorithmID().getAlgorithm();
    ret.setDigestAlgorithm(digestAlgOid);

    String sigAlgOid = signerInfo.getEncryptionAlgOID();
    if (!PKCSObjectIdentifiers.rsaEncryption.getId().equals(sigAlgOid)) {
        ASN1ObjectIdentifier tmpDigestAlgOid;
        try {
            tmpDigestAlgOid = ScepUtil.extractDigesetAlgorithmIdentifier(signerInfo.getEncryptionAlgOID(),
                    signerInfo.getEncryptionAlgParams());
        } catch (Exception ex) {
            final String msg = "could not extract digest algorithm from signerInfo.signatureAlgorithm: "
                    + ex.getMessage();
            LOG.error(msg);
            LOG.debug(msg, ex);
            ret.setFailureMessage(msg);
            return ret;
        }
        if (!digestAlgOid.equals(tmpDigestAlgOid)) {
            ret.setFailureMessage(
                    "digestAlgorithm and encryptionAlgorithm do not use" + " the same digestAlgorithm");
            return ret;
        }
    } // end if

    X509CertificateHolder tmpSignerCert = (X509CertificateHolder) signedDataCerts.iterator().next();
    X509Certificate signerCert;
    try {
        signerCert = ScepUtil.toX509Cert(tmpSignerCert.toASN1Structure());
    } catch (CertificateException ex) {
        final String msg = "could not construct X509CertificateObject: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);
        return ret;
    }
    ret.setSignatureCert(signerCert);

    // validate the signature
    SignerInformationVerifier verifier;
    try {
        verifier = new JcaSimpleSignerInfoVerifierBuilder().build(signerCert.getPublicKey());
    } catch (OperatorCreationException ex) {
        final String msg = "could not build signature verifier: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);
        return ret;
    }

    boolean signatureValid;
    try {
        signatureValid = signerInfo.verify(verifier);
    } catch (CMSException ex) {
        final String msg = "could not verify the signature: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);
        return ret;
    }

    ret.setSignatureValid(signatureValid);
    if (!signatureValid) {
        return ret;
    }

    // MessageData
    CMSTypedData signedContent = pkiMessage.getSignedContent();
    ASN1ObjectIdentifier signedContentType = signedContent.getContentType();
    if (!CMSObjectIdentifiers.signedData.equals(signedContentType)) {
        // fall back: some SCEP client use id-data
        if (!CMSObjectIdentifiers.data.equals(signedContentType)) {
            ret.setFailureMessage(
                    "either id-signedData or id-data is excepted, but not '" + signedContentType.getId());
            return ret;
        }
    }

    ContentInfo contentInfo = ContentInfo.getInstance((byte[]) signedContent.getContent());
    SignedData signedData = SignedData.getInstance(contentInfo.getContent());

    List<X509Certificate> certs;
    try {
        certs = ScepUtil.getCertsFromSignedData(signedData);
    } catch (CertificateException ex) {
        final String msg = "could not extract Certificates from the message: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);
        return ret;
    }

    final int n = certs.size();

    X509Certificate caCert = null;
    List<X509Certificate> raCerts = new LinkedList<X509Certificate>();
    for (int i = 0; i < n; i++) {
        X509Certificate cert = certs.get(i);
        if (cert.getBasicConstraints() > -1) {
            if (caCert != null) {
                final String msg = "multiple CA certificates is returned, but exactly 1 is expected";
                LOG.error(msg);
                ret.setFailureMessage(msg);
                return ret;
            }
            caCert = cert;
        } else {
            raCerts.add(cert);
        }
    } // end for

    if (caCert == null) {
        final String msg = "no CA certificate is returned";
        LOG.error(msg);
        ret.setFailureMessage(msg);
        return ret;
    }

    X509Certificate[] locaRaCerts;
    if (raCerts.isEmpty()) {
        locaRaCerts = null;
    } else {
        locaRaCerts = raCerts.toArray(new X509Certificate[0]);
    }

    AuthorityCertStore authorityCertStore = AuthorityCertStore.getInstance(caCert, locaRaCerts);
    ret.setAuthorityCertStore(authorityCertStore);

    return ret;
}

From source file:org.xipki.pki.scep.message.DecodedPkiMessage.java

License:Open Source License

@SuppressWarnings("unchecked")
public static DecodedPkiMessage decode(final CMSSignedData pkiMessage, final EnvelopedDataDecryptor recipient,
        final CollectionStore<X509CertificateHolder> certStore) throws MessageDecodingException {
    ParamUtil.requireNonNull("pkiMessage", pkiMessage);
    ParamUtil.requireNonNull("recipient", recipient);

    SignerInformationStore signerStore = pkiMessage.getSignerInfos();
    Collection<SignerInformation> signerInfos = signerStore.getSigners();
    if (signerInfos.size() != 1) {
        throw new MessageDecodingException("number of signerInfos is not 1, but " + signerInfos.size());
    }/*from  w  w  w. j  a v a 2 s  .  co m*/

    SignerInformation signerInfo = signerInfos.iterator().next();
    SignerId sid = signerInfo.getSID();

    Collection<?> signedDataCerts = null;
    if (certStore != null) {
        signedDataCerts = certStore.getMatches(sid);
    }

    if (signedDataCerts == null || signedDataCerts.isEmpty()) {
        signedDataCerts = pkiMessage.getCertificates().getMatches(signerInfo.getSID());
    }

    if (signedDataCerts == null || signedDataCerts.size() != 1) {
        throw new MessageDecodingException("could not find embedded certificate to verify the signature");
    }

    AttributeTable signedAttrs = signerInfo.getSignedAttributes();
    if (signedAttrs == null) {
        throw new MessageDecodingException("missing SCEP attributes");
    }

    Date signingTime = null;
    // signingTime
    ASN1Encodable attrValue = ScepUtil.getFirstAttrValue(signedAttrs, CMSAttributes.signingTime);
    if (attrValue != null) {
        signingTime = Time.getInstance(attrValue).getDate();
    }

    // transactionId
    String str = getPrintableStringAttrValue(signedAttrs, ScepObjectIdentifiers.ID_TRANSACTION_ID);
    if (str == null || str.isEmpty()) {
        throw new MessageDecodingException("missing required SCEP attribute transactionId");
    }
    TransactionId transactionId = new TransactionId(str);

    // messageType
    Integer intValue = getIntegerPrintStringAttrValue(signedAttrs, ScepObjectIdentifiers.ID_MESSAGE_TYPE);
    if (intValue == null) {
        throw new MessageDecodingException(
                "tid " + transactionId.getId() + ": missing required SCEP attribute messageType");
    }

    MessageType messageType;
    try {
        messageType = MessageType.forValue(intValue);
    } catch (IllegalArgumentException ex) {
        throw new MessageDecodingException(
                "tid " + transactionId.getId() + ": invalid messageType '" + intValue + "'");
    }

    // senderNonce
    Nonce senderNonce = getNonceAttrValue(signedAttrs, ScepObjectIdentifiers.ID_SENDER_NONCE);
    if (senderNonce == null) {
        throw new MessageDecodingException(
                "tid " + transactionId.getId() + ": missing required SCEP attribute senderNonce");
    }

    DecodedPkiMessage ret = new DecodedPkiMessage(transactionId, messageType, senderNonce);
    if (signingTime != null) {
        ret.setSigningTime(signingTime);
    }

    Nonce recipientNonce = null;
    try {
        recipientNonce = getNonceAttrValue(signedAttrs, ScepObjectIdentifiers.ID_RECIPIENT_NONCE);
    } catch (MessageDecodingException ex) {
        ret.setFailureMessage("could not parse recipientNonce: " + ex.getMessage());
    }

    if (recipientNonce != null) {
        ret.setRecipientNonce(recipientNonce);
    }

    PkiStatus pkiStatus = null;
    FailInfo failInfo = null;
    if (MessageType.CertRep == messageType) {
        // pkiStatus
        try {
            intValue = getIntegerPrintStringAttrValue(signedAttrs, ScepObjectIdentifiers.ID_PKI_STATUS);
        } catch (MessageDecodingException ex) {
            ret.setFailureMessage("could not parse pkiStatus: " + ex.getMessage());
            return ret;
        }

        if (intValue == null) {
            ret.setFailureMessage("missing required SCEP attribute pkiStatus");
            return ret;
        }

        try {
            pkiStatus = PkiStatus.forValue(intValue);
        } catch (IllegalArgumentException ex) {
            ret.setFailureMessage("invalid pkiStatus '" + intValue + "'");
            return ret;
        }
        ret.setPkiStatus(pkiStatus);

        // failureInfo
        if (pkiStatus == PkiStatus.FAILURE) {
            try {
                intValue = getIntegerPrintStringAttrValue(signedAttrs, ScepObjectIdentifiers.ID_FAILINFO);
            } catch (MessageDecodingException ex) {
                ret.setFailureMessage("could not parse failInfo: " + ex.getMessage());
                return ret;
            }

            if (intValue == null) {
                ret.setFailureMessage("missing required SCEP attribute failInfo");
                return ret;
            }

            try {
                failInfo = FailInfo.forValue(intValue);
            } catch (IllegalArgumentException ex) {
                ret.setFailureMessage("invalid failInfo '" + intValue + "'");
                return ret;
            }

            ret.setFailInfo(failInfo);
        } // end if(pkiStatus == PkiStatus.FAILURE)
    } // end if (MessageType.CertRep == messageType)

    // other signedAttributes
    Attribute[] attrs = signedAttrs.toASN1Structure().getAttributes();
    for (Attribute attr : attrs) {
        ASN1ObjectIdentifier type = attr.getAttrType();
        if (!SCEP_ATTR_TYPES.contains(type)) {
            ret.addSignendAttribute(type, attr.getAttrValues().getObjectAt(0));
        }
    }

    // unsignedAttributes
    AttributeTable unsignedAttrs = signerInfo.getUnsignedAttributes();
    attrs = (unsignedAttrs == null) ? null : unsignedAttrs.toASN1Structure().getAttributes();
    if (attrs != null) {
        for (Attribute attr : attrs) {
            ASN1ObjectIdentifier type = attr.getAttrType();
            ret.addUnsignendAttribute(type, attr.getAttrValues().getObjectAt(0));
        }
    }

    ASN1ObjectIdentifier digestAlgOid = signerInfo.getDigestAlgorithmID().getAlgorithm();
    ret.setDigestAlgorithm(digestAlgOid);

    String sigAlgOid = signerInfo.getEncryptionAlgOID();
    if (!PKCSObjectIdentifiers.rsaEncryption.getId().equals(sigAlgOid)) {
        ASN1ObjectIdentifier tmpDigestAlgOid;
        try {
            tmpDigestAlgOid = ScepUtil.extractDigesetAlgorithmIdentifier(signerInfo.getEncryptionAlgOID(),
                    signerInfo.getEncryptionAlgParams());
        } catch (Exception ex) {
            final String msg = "could not extract digest algorithm from signerInfo.signatureAlgorithm: "
                    + ex.getMessage();
            LOG.error(msg);
            LOG.debug(msg, ex);
            ret.setFailureMessage(msg);
            return ret;
        }
        if (!digestAlgOid.equals(tmpDigestAlgOid)) {
            ret.setFailureMessage(
                    "digestAlgorithm and encryptionAlgorithm do not use the" + " same digestAlgorithm");
            return ret;
        } // end if
    } // end if

    X509CertificateHolder tmpSignerCert = (X509CertificateHolder) signedDataCerts.iterator().next();
    X509Certificate signerCert;
    try {
        signerCert = ScepUtil.toX509Cert(tmpSignerCert.toASN1Structure());
    } catch (CertificateException ex) {
        final String msg = "could not construct X509Certificate: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);
        return ret;
    }
    ret.setSignatureCert(signerCert);

    // validate the signature
    SignerInformationVerifier verifier;
    try {
        verifier = new JcaSimpleSignerInfoVerifierBuilder().build(signerCert.getPublicKey());
    } catch (OperatorCreationException ex) {
        final String msg = "could not build signature verifier: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);
        return ret;
    }

    boolean signatureValid;
    try {
        signatureValid = signerInfo.verify(verifier);
    } catch (CMSException ex) {
        final String msg = "could not verify the signature: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);
        return ret;
    }

    ret.setSignatureValid(signatureValid);
    if (!signatureValid) {
        return ret;
    }

    if (MessageType.CertRep == messageType
            && (pkiStatus == PkiStatus.FAILURE | pkiStatus == PkiStatus.PENDING)) {
        return ret;
    }

    // MessageData
    CMSTypedData signedContent = pkiMessage.getSignedContent();
    ASN1ObjectIdentifier signedContentType = signedContent.getContentType();
    if (!CMSObjectIdentifiers.envelopedData.equals(signedContentType)) {
        // fall back: some SCEP client, such as JSCEP use id-data
        if (!CMSObjectIdentifiers.data.equals(signedContentType)) {
            ret.setFailureMessage(
                    "either id-envelopedData or id-data is excepted, but not '" + signedContentType.getId());
            return ret;
        }
    }

    CMSEnvelopedData envData;
    try {
        envData = new CMSEnvelopedData((byte[]) signedContent.getContent());
    } catch (CMSException ex) {
        final String msg = "could not create the CMSEnvelopedData: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);
        return ret;
    }

    ret.setContentEncryptionAlgorithm(envData.getContentEncryptionAlgorithm().getAlgorithm());
    byte[] encodedMessageData;
    try {
        encodedMessageData = recipient.decrypt(envData);
    } catch (MessageDecodingException ex) {
        final String msg = "could not create the CMSEnvelopedData: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);

        ret.setDecryptionSuccessful(false);
        return ret;
    }

    ret.setDecryptionSuccessful(true);

    try {
        if (MessageType.PKCSReq == messageType || MessageType.RenewalReq == messageType
                || MessageType.UpdateReq == messageType) {
            CertificationRequest messageData = CertificationRequest.getInstance(encodedMessageData);
            ret.setMessageData(messageData);
        } else if (MessageType.CertPoll == messageType) {
            IssuerAndSubject messageData = IssuerAndSubject.getInstance(encodedMessageData);
            ret.setMessageData(messageData);
        } else if (MessageType.GetCert == messageType || MessageType.GetCRL == messageType) {
            IssuerAndSerialNumber messageData = IssuerAndSerialNumber.getInstance(encodedMessageData);
            ret.setMessageData(messageData);
            ret.setMessageData(messageData);
        } else if (MessageType.CertRep == messageType) {
            ContentInfo ci = ContentInfo.getInstance(encodedMessageData);
            ret.setMessageData(ci);
        } else {
            throw new RuntimeException("should not reach here, unknown messageType " + messageType);
        }
    } catch (Exception ex) {
        final String msg = "could not parse the messageData: " + ex.getMessage();
        LOG.error(msg);
        LOG.debug(msg, ex);
        ret.setFailureMessage(msg);
        return ret;
    }

    return ret;
}