Examples with PKIStatus org.bouncycastle.asn1.cmp.PKIStatus used on opensource projects

Example 6 with PKIStatus

use of org.bouncycastle.asn1.cmp.PKIStatus in project xipki by xipki.

the class CmpResponder method generateRejectionStatus.

// method generateCmpRejectionStatus
protected PKIStatusInfo generateRejectionStatus(PKIStatus status, Integer info, String errorMessage) {
    PKIFreeText statusMessage = (errorMessage == null) ? null : new PKIFreeText(errorMessage);
    PKIFailureInfo failureInfo = (info == null) ? null : new PKIFailureInfo(info);
    return new PKIStatusInfo(status, statusMessage, failureInfo);
}

Example 7 with PKIStatus

use of org.bouncycastle.asn1.cmp.PKIStatus in project xipki by xipki.

the class X509CaCmpResponderImpl method processPkiMessage0.

@Override
protected PKIMessage processPkiMessage0(PKIMessage request, RequestorInfo requestor, ASN1OctetString tid, GeneralPKIMessage message, String msgId, AuditEvent event) {
    if (!(requestor instanceof CmpRequestorInfo)) {
        throw new IllegalArgumentException("unknown requestor type " + requestor.getClass().getName());
    }
    CmpRequestorInfo tmpRequestor = (CmpRequestorInfo) requestor;
    event.addEventData(CaAuditConstants.NAME_requestor, tmpRequestor.getIdent().getName());
    PKIHeader reqHeader = message.getHeader();
    PKIHeaderBuilder respHeader = new PKIHeaderBuilder(reqHeader.getPvno().getValue().intValue(), getSender(), reqHeader.getSender());
    respHeader.setTransactionID(tid);
    ASN1OctetString senderNonce = reqHeader.getSenderNonce();
    if (senderNonce != null) {
        respHeader.setRecipNonce(senderNonce);
    }
    PKIBody respBody;
    PKIBody reqBody = message.getBody();
    final int type = reqBody.getType();
    CmpControl cmpControl = getCmpControl();
    try {
        switch(type) {
            case PKIBody.TYPE_CERT_REQ:
            case PKIBody.TYPE_KEY_UPDATE_REQ:
            case PKIBody.TYPE_P10_CERT_REQ:
            case PKIBody.TYPE_CROSS_CERT_REQ:
                String eventType = null;
                if (PKIBody.TYPE_CERT_REQ == type) {
                    eventType = CaAuditConstants.TYPE_CMP_cr;
                } else if (PKIBody.TYPE_KEY_UPDATE_REQ == type) {
                    eventType = CaAuditConstants.TYPE_CMP_kur;
                } else if (PKIBody.TYPE_P10_CERT_REQ == type) {
                    eventType = CaAuditConstants.TYPE_CMP_p10Cr;
                } else if (PKIBody.TYPE_CROSS_CERT_REQ == type) {
                    eventType = CaAuditConstants.TYPE_CMP_ccr;
                }
                if (eventType != null) {
                    event.addEventType(eventType);
                }
                respBody = cmpEnrollCert(request, respHeader, cmpControl, reqHeader, reqBody, tmpRequestor, tid, msgId, event);
                break;
            case PKIBody.TYPE_CERT_CONFIRM:
                event.addEventType(CaAuditConstants.TYPE_CMP_certConf);
                CertConfirmContent certConf = (CertConfirmContent) reqBody.getContent();
                respBody = confirmCertificates(tid, certConf, msgId);
                break;
            case PKIBody.TYPE_REVOCATION_REQ:
                respBody = cmpUnRevokeRemoveCertificates(request, respHeader, cmpControl, reqHeader, reqBody, tmpRequestor, msgId, event);
                break;
            case PKIBody.TYPE_CONFIRM:
                event.addEventType(CaAuditConstants.TYPE_CMP_pkiConf);
                respBody = new PKIBody(PKIBody.TYPE_CONFIRM, DERNull.INSTANCE);
                break;
            case PKIBody.TYPE_GEN_MSG:
                respBody = cmpGeneralMsg(respHeader, cmpControl, reqHeader, reqBody, tmpRequestor, tid, msgId, event);
                break;
            case PKIBody.TYPE_ERROR:
                event.addEventType(CaAuditConstants.TYPE_CMP_error);
                revokePendingCertificates(tid, msgId);
                respBody = new PKIBody(PKIBody.TYPE_CONFIRM, DERNull.INSTANCE);
                break;
            default:
                event.addEventType("PKIBody." + type);
                respBody = buildErrorMsgPkiBody(PKIStatus.rejection, PKIFailureInfo.badRequest, "unsupported type " + type);
                break;
        }
    // end switch (type)
    } catch (InsuffientPermissionException ex) {
        ErrorMsgContent emc = new ErrorMsgContent(new PKIStatusInfo(PKIStatus.rejection, new PKIFreeText(ex.getMessage()), new PKIFailureInfo(PKIFailureInfo.notAuthorized)));
        respBody = new PKIBody(PKIBody.TYPE_ERROR, emc);
    }
    if (respBody.getType() == PKIBody.TYPE_ERROR) {
        ErrorMsgContent errorMsgContent = (ErrorMsgContent) respBody.getContent();
        AuditStatus auditStatus = AuditStatus.FAILED;
        org.xipki.cmp.PkiStatusInfo pkiStatus = new org.xipki.cmp.PkiStatusInfo(errorMsgContent.getPKIStatusInfo());
        if (pkiStatus.pkiFailureInfo() == PKIFailureInfo.systemFailure) {
            auditStatus = AuditStatus.FAILED;
        }
        event.setStatus(auditStatus);
        String statusString = pkiStatus.statusMessage();
        if (statusString != null) {
            event.addEventData(CaAuditConstants.NAME_message, statusString);
        }
    } else if (event.getStatus() == null) {
        event.setStatus(AuditStatus.SUCCESSFUL);
    }
    return new PKIMessage(respHeader.build(), respBody);
}

Example 8 with PKIStatus

use of org.bouncycastle.asn1.cmp.PKIStatus in project xipki by xipki.

the class DecodedPkiMessage method decode.

@SuppressWarnings("unchecked")
public static DecodedPkiMessage decode(CMSSignedData pkiMessage, EnvelopedDataDecryptor recipient, CollectionStore<X509CertificateHolder> certStore) throws MessageDecodingException {
    ScepUtil.requireNonNull("pkiMessage", pkiMessage);
    ScepUtil.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());
    }
    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(tmpSignerCert);
    } catch (OperatorCreationException | CertificateException 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;
}

Example 9 with PKIStatus

use of org.bouncycastle.asn1.cmp.PKIStatus in project xipki by xipki.

the class AbstractCaTest method test.

@Test
public void test() throws Exception {
    CaIdentifier caId = new CaIdentifier("http://localhost:" + port + "/scep/pkiclient.exe", null);
    CaCertValidator caCertValidator = new PreprovisionedCaCertValidator(ScepUtil.toX509Cert(scepServer.getCaCert()));
    ScepClient client = new ScepClient(caId, caCertValidator);
    client.setUseInsecureAlgorithms(useInsecureAlgorithms());
    client.refresh();
    CaCaps expCaCaps = getExpectedCaCaps();
    // CACaps
    CaCaps caCaps = client.getCaCaps();
    Assert.assertEquals("CACaps", expCaCaps, caCaps);
    // CA certificate
    Certificate expCaCert = scepServer.getCaCert();
    X509Certificate caCert = client.getAuthorityCertStore().getCaCert();
    if (!equals(expCaCert, caCert)) {
        Assert.fail("Configured and received CA certificate not the same");
    }
    boolean withRa = isWithRa();
    // RA
    if (withRa) {
        Certificate expRaCert = scepServer.getRaCert();
        X509Certificate raSigCert = client.getAuthorityCertStore().getSignatureCert();
        X509Certificate raEncCert = client.getAuthorityCertStore().getEncryptionCert();
        Assert.assertEquals("RA certificate", raSigCert, raEncCert);
        if (!equals(expRaCert, raSigCert)) {
            Assert.fail("Configured and received RA certificate not the same");
        }
    }
    // getNextCA
    if (isWithNextCa()) {
        AuthorityCertStore nextCa = client.scepNextCaCert();
        Certificate expNextCaCert = scepServer.getNextCaCert();
        X509Certificate nextCaCert = nextCa.getCaCert();
        if (!equals(expNextCaCert, nextCaCert)) {
            Assert.fail("Configured and received next CA certificate not the same");
        }
        if (withRa) {
            Certificate expNextRaCert = scepServer.getNextRaCert();
            X509Certificate nextRaSigCert = nextCa.getSignatureCert();
            X509Certificate nextRaEncCert = nextCa.getEncryptionCert();
            Assert.assertEquals("Next RA certificate", nextRaSigCert, nextRaEncCert);
            if (!equals(expNextRaCert, nextRaSigCert)) {
                Assert.fail("Configured and received next RA certificate not the same");
            }
        }
    }
    // enroll
    CertificationRequest csr;
    X509Certificate selfSignedCert;
    X509Certificate enroledCert;
    X500Name issuerName = X500Name.getInstance(caCert.getSubjectX500Principal().getEncoded());
    PrivateKey privKey;
    {
        KeyPairGenerator kpGen = KeyPairGenerator.getInstance("RSA");
        kpGen.initialize(2048);
        KeyPair keypair = kpGen.generateKeyPair();
        privKey = keypair.getPrivate();
        SubjectPublicKeyInfo subjectPublicKeyInfo = ScepUtil.createSubjectPublicKeyInfo(keypair.getPublic());
        X500Name subject = new X500Name("CN=EE1, OU=emulator, O=xipki.org, C=DE");
        // first try without secret
        PKCS10CertificationRequest p10Req = ScepUtil.generateRequest(privKey, subjectPublicKeyInfo, subject, null, null);
        csr = p10Req.toASN1Structure();
        selfSignedCert = ScepUtil.generateSelfsignedCert(p10Req.toASN1Structure(), privKey);
        EnrolmentResponse enrolResp = client.scepPkcsReq(p10Req.toASN1Structure(), privKey, selfSignedCert);
        PkiStatus status = enrolResp.getPkcsRep().getPkiStatus();
        Assert.assertEquals("PkiStatus without secret", PkiStatus.FAILURE, status);
        // then try invalid secret
        p10Req = ScepUtil.generateRequest(privKey, subjectPublicKeyInfo, subject, "invalid-" + secret, null);
        csr = p10Req.toASN1Structure();
        selfSignedCert = ScepUtil.generateSelfsignedCert(p10Req.toASN1Structure(), privKey);
        enrolResp = client.scepPkcsReq(p10Req.toASN1Structure(), privKey, selfSignedCert);
        status = enrolResp.getPkcsRep().getPkiStatus();
        Assert.assertEquals("PkiStatus with invalid secret", PkiStatus.FAILURE, status);
        // try with valid secret
        p10Req = ScepUtil.generateRequest(privKey, subjectPublicKeyInfo, subject, secret, null);
        csr = p10Req.toASN1Structure();
        selfSignedCert = ScepUtil.generateSelfsignedCert(p10Req.toASN1Structure(), privKey);
        enrolResp = client.scepPkcsReq(p10Req.toASN1Structure(), privKey, selfSignedCert);
        List<X509Certificate> certs = enrolResp.getCertificates();
        Assert.assertTrue("number of received certificates", certs.size() > 0);
        X509Certificate cert = certs.get(0);
        Assert.assertNotNull("enroled certificate", cert);
        enroledCert = cert;
        // try :: self-signed certificate's subject different from the one of CSR
        p10Req = ScepUtil.generateRequest(privKey, subjectPublicKeyInfo, subject, secret, null);
        csr = p10Req.toASN1Structure();
        selfSignedCert = ScepUtil.generateSelfsignedCert(new X500Name("CN=dummy"), csr.getCertificationRequestInfo().getSubjectPublicKeyInfo(), privKey);
        enrolResp = client.scepPkcsReq(p10Req.toASN1Structure(), privKey, selfSignedCert);
        status = enrolResp.getPkcsRep().getPkiStatus();
        Assert.assertEquals("PkiStatus with invalid secret", PkiStatus.FAILURE, status);
    }
    // certPoll
    EnrolmentResponse enrolResp = client.scepCertPoll(privKey, selfSignedCert, csr, issuerName);
    List<X509Certificate> certs = enrolResp.getCertificates();
    Assert.assertTrue("number of received certificates", certs.size() > 0);
    X509Certificate cert = certs.get(0);
    Assert.assertNotNull("enrolled certificate", cert);
    // getCert
    certs = client.scepGetCert(privKey, selfSignedCert, issuerName, enroledCert.getSerialNumber());
    Assert.assertTrue("number of received certificates", certs.size() > 0);
    cert = certs.get(0);
    Assert.assertNotNull("received certificate", cert);
    // getCRL
    X509CRL crl = client.scepGetCrl(privKey, enroledCert, issuerName, enroledCert.getSerialNumber());
    Assert.assertNotNull("received CRL", crl);
    // getNextCA
    AuthorityCertStore nextCa = client.scepNextCaCert();
    Assert.assertNotNull("nextCa", nextCa);
}

Example 10 with PKIStatus

use of org.bouncycastle.asn1.cmp.PKIStatus in project xipki by xipki.

the class PkiMessage method getSignedAttributes.

private AttributeTable getSignedAttributes() {
    ASN1EncodableVector vec = new ASN1EncodableVector();
    // messageType
    addAttribute(vec, ScepObjectIdentifiers.ID_MESSAGE_TYPE, new DERPrintableString(Integer.toString(messageType.getCode())));
    // senderNonce
    addAttribute(vec, ScepObjectIdentifiers.ID_SENDER_NONCE, new DEROctetString(senderNonce.getBytes()));
    // transactionID
    addAttribute(vec, ScepObjectIdentifiers.ID_TRANSACTION_ID, new DERPrintableString(transactionId.getId()));
    // failInfo
    if (failInfo != null) {
        addAttribute(vec, ScepObjectIdentifiers.ID_FAILINFO, new DERPrintableString(Integer.toString(failInfo.getCode())));
    }
    // pkiStatus
    if (pkiStatus != null) {
        addAttribute(vec, ScepObjectIdentifiers.ID_PKI_STATUS, new DERPrintableString(Integer.toString(pkiStatus.getCode())));
    }
    // recipientNonce
    if (recipientNonce != null) {
        addAttribute(vec, ScepObjectIdentifiers.ID_RECIPIENT_NONCE, new DEROctetString(recipientNonce.getBytes()));
    }
    for (ASN1ObjectIdentifier type : signedAttributes.keySet()) {
        addAttribute(vec, type, signedAttributes.get(type));
    }
    return new AttributeTable(vec);
}