Examples with Attribute org.bouncycastle.asn1.cms.Attribute used on opensource projects

Example 16 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project XobotOS by xamarin.

the class RFC3280CertPathUtilities method processCRLF.

/**
     * Obtain and validate the certification path for the complete CRL issuer.
     * If a key usage extension is present in the CRL issuer's certificate,
     * verify that the cRLSign bit is set.
     *
     * @param crl                CRL which contains revocation information for the certificate
     *                           <code>cert</code>.
     * @param cert               The attribute certificate or certificate to check if it is
     *                           revoked.
     * @param defaultCRLSignCert The issuer certificate of the certificate <code>cert</code>.
     * @param defaultCRLSignKey  The public key of the issuer certificate
     *                           <code>defaultCRLSignCert</code>.
     * @param paramsPKIX         paramsPKIX PKIX parameters.
     * @param certPathCerts      The certificates on the certification path.
     * @return A <code>Set</code> with all keys of possible CRL issuer
     *         certificates.
     * @throws AnnotatedException if the CRL is not valid or the status cannot be checked or
     *                            some error occurs.
     */
protected static Set processCRLF(X509CRL crl, Object cert, X509Certificate defaultCRLSignCert, PublicKey defaultCRLSignKey, ExtendedPKIXParameters paramsPKIX, List certPathCerts) throws AnnotatedException {
    // (f)
    // get issuer from CRL
    X509CertStoreSelector selector = new X509CertStoreSelector();
    try {
        byte[] issuerPrincipal = CertPathValidatorUtilities.getIssuerPrincipal(crl).getEncoded();
        selector.setSubject(issuerPrincipal);
    } catch (IOException e) {
        throw new AnnotatedException("Subject criteria for certificate selector to find issuer certificate for CRL could not be set.", e);
    }
    // get CRL signing certs
    Collection coll;
    try {
        coll = CertPathValidatorUtilities.findCertificates(selector, paramsPKIX.getStores());
        coll.addAll(CertPathValidatorUtilities.findCertificates(selector, paramsPKIX.getAdditionalStores()));
        coll.addAll(CertPathValidatorUtilities.findCertificates(selector, paramsPKIX.getCertStores()));
    } catch (AnnotatedException e) {
        throw new AnnotatedException("Issuer certificate for CRL cannot be searched.", e);
    }
    coll.add(defaultCRLSignCert);
    Iterator cert_it = coll.iterator();
    List validCerts = new ArrayList();
    List validKeys = new ArrayList();
    while (cert_it.hasNext()) {
        X509Certificate signingCert = (X509Certificate) cert_it.next();
        /*
             * CA of the certificate, for which this CRL is checked, has also
             * signed CRL, so skip the path validation, because is already done
             */
        if (signingCert.equals(defaultCRLSignCert)) {
            validCerts.add(signingCert);
            validKeys.add(defaultCRLSignKey);
            continue;
        }
        try {
            CertPathBuilder builder = CertPathBuilder.getInstance("PKIX", BouncyCastleProvider.PROVIDER_NAME);
            selector = new X509CertStoreSelector();
            selector.setCertificate(signingCert);
            ExtendedPKIXParameters temp = (ExtendedPKIXParameters) paramsPKIX.clone();
            temp.setTargetCertConstraints(selector);
            ExtendedPKIXBuilderParameters params = (ExtendedPKIXBuilderParameters) ExtendedPKIXBuilderParameters.getInstance(temp);
            /*
                 * if signingCert is placed not higher on the cert path a
                 * dependency loop results. CRL for cert is checked, but
                 * signingCert is needed for checking the CRL which is dependent
                 * on checking cert because it is higher in the cert path and so
                 * signing signingCert transitively. so, revocation is disabled,
                 * forgery attacks of the CRL are detected in this outer loop
                 * for all other it must be enabled to prevent forgery attacks
                 */
            if (certPathCerts.contains(signingCert)) {
                params.setRevocationEnabled(false);
            } else {
                params.setRevocationEnabled(true);
            }
            List certs = builder.build(params).getCertPath().getCertificates();
            validCerts.add(signingCert);
            validKeys.add(CertPathValidatorUtilities.getNextWorkingKey(certs, 0));
        } catch (CertPathBuilderException e) {
            throw new AnnotatedException("Internal error.", e);
        } catch (CertPathValidatorException e) {
            throw new AnnotatedException("Public key of issuer certificate of CRL could not be retrieved.", e);
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage());
        }
    }
    Set checkKeys = new HashSet();
    AnnotatedException lastException = null;
    for (int i = 0; i < validCerts.size(); i++) {
        X509Certificate signCert = (X509Certificate) validCerts.get(i);
        boolean[] keyusage = signCert.getKeyUsage();
        if (keyusage != null && (keyusage.length < 7 || !keyusage[CRL_SIGN])) {
            lastException = new AnnotatedException("Issuer certificate key usage extension does not permit CRL signing.");
        } else {
            checkKeys.add(validKeys.get(i));
        }
    }
    if (checkKeys.isEmpty() && lastException == null) {
        throw new AnnotatedException("Cannot find a valid issuer certificate.");
    }
    if (checkKeys.isEmpty() && lastException != null) {
        throw lastException;
    }
    return checkKeys;
}

Example 17 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project XobotOS by xamarin.

the class RFC3280CertPathUtilities method processCRLB1.

/**
     * If the DP includes cRLIssuer, then verify that the issuer field in the
     * complete CRL matches cRLIssuer in the DP and that the complete CRL
     * contains an issuing distribution point extension with the indirectCRL
     * boolean asserted. Otherwise, verify that the CRL issuer matches the
     * certificate issuer.
     *
     * @param dp   The distribution point.
     * @param cert The certificate ot attribute certificate.
     * @param crl  The CRL for <code>cert</code>.
     * @throws AnnotatedException if one of the above conditions does not apply or an error
     *                            occurs.
     */
protected static void processCRLB1(DistributionPoint dp, Object cert, X509CRL crl) throws AnnotatedException {
    DERObject idp = CertPathValidatorUtilities.getExtensionValue(crl, ISSUING_DISTRIBUTION_POINT);
    boolean isIndirect = false;
    if (idp != null) {
        if (IssuingDistributionPoint.getInstance(idp).isIndirectCRL()) {
            isIndirect = true;
        }
    }
    byte[] issuerBytes = CertPathValidatorUtilities.getIssuerPrincipal(crl).getEncoded();
    boolean matchIssuer = false;
    if (dp.getCRLIssuer() != null) {
        GeneralName[] genNames = dp.getCRLIssuer().getNames();
        for (int j = 0; j < genNames.length; j++) {
            if (genNames[j].getTagNo() == GeneralName.directoryName) {
                try {
                    if (Arrays.areEqual(genNames[j].getName().getDERObject().getEncoded(), issuerBytes)) {
                        matchIssuer = true;
                    }
                } catch (IOException e) {
                    throw new AnnotatedException("CRL issuer information from distribution point cannot be decoded.", e);
                }
            }
        }
        if (matchIssuer && !isIndirect) {
            throw new AnnotatedException("Distribution point contains cRLIssuer field but CRL is not indirect.");
        }
        if (!matchIssuer) {
            throw new AnnotatedException("CRL issuer of CRL does not match CRL issuer of distribution point.");
        }
    } else {
        if (CertPathValidatorUtilities.getIssuerPrincipal(crl).equals(CertPathValidatorUtilities.getEncodedIssuerPrincipal(cert))) {
            matchIssuer = true;
        }
    }
    if (!matchIssuer) {
        throw new AnnotatedException("Cannot find matching CRL issuer for certificate.");
    }
}

Example 18 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project XobotOS by xamarin.

the class MiscPEMGenerator method createPemObject.

private PemObject createPemObject(Object o) throws IOException {
    String type;
    byte[] encoding;
    if (o instanceof PemObject) {
        return (PemObject) o;
    }
    if (o instanceof PemObjectGenerator) {
        return ((PemObjectGenerator) o).generate();
    }
    if (o instanceof X509Certificate) {
        type = "CERTIFICATE";
        try {
            encoding = ((X509Certificate) o).getEncoded();
        } catch (CertificateEncodingException e) {
            throw new PemGenerationException("Cannot encode object: " + e.toString());
        }
    } else if (o instanceof X509CRL) {
        type = "X509 CRL";
        try {
            encoding = ((X509CRL) o).getEncoded();
        } catch (CRLException e) {
            throw new PemGenerationException("Cannot encode object: " + e.toString());
        }
    } else if (o instanceof KeyPair) {
        return createPemObject(((KeyPair) o).getPrivate());
    } else if (o instanceof PrivateKey) {
        PrivateKeyInfo info = new PrivateKeyInfo((ASN1Sequence) ASN1Object.fromByteArray(((Key) o).getEncoded()));
        if (o instanceof RSAPrivateKey) {
            type = "RSA PRIVATE KEY";
            encoding = info.getPrivateKey().getEncoded();
        } else if (o instanceof DSAPrivateKey) {
            type = "DSA PRIVATE KEY";
            DSAParameter p = DSAParameter.getInstance(info.getAlgorithmId().getParameters());
            ASN1EncodableVector v = new ASN1EncodableVector();
            v.add(new DERInteger(0));
            v.add(new DERInteger(p.getP()));
            v.add(new DERInteger(p.getQ()));
            v.add(new DERInteger(p.getG()));
            BigInteger x = ((DSAPrivateKey) o).getX();
            BigInteger y = p.getG().modPow(x, p.getP());
            v.add(new DERInteger(y));
            v.add(new DERInteger(x));
            encoding = new DERSequence(v).getEncoded();
        } else if (((PrivateKey) o).getAlgorithm().equals("ECDSA")) {
            type = "EC PRIVATE KEY";
            encoding = info.getPrivateKey().getEncoded();
        } else {
            throw new IOException("Cannot identify private key");
        }
    } else if (o instanceof PublicKey) {
        type = "PUBLIC KEY";
        encoding = ((PublicKey) o).getEncoded();
    } else if (o instanceof X509AttributeCertificate) {
        type = "ATTRIBUTE CERTIFICATE";
        encoding = ((X509V2AttributeCertificate) o).getEncoded();
    } else if (o instanceof PKCS10CertificationRequest) {
        type = "CERTIFICATE REQUEST";
        encoding = ((PKCS10CertificationRequest) o).getEncoded();
    } else if (o instanceof ContentInfo) {
        type = "PKCS7";
        encoding = ((ContentInfo) o).getEncoded();
    } else {
        throw new PemGenerationException("unknown object passed - can't encode.");
    }
    return new PemObject(type, encoding);
}

Example 19 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project XobotOS by xamarin.

the class CertPathValidatorUtilities method findCertificates.

/**
     * Return a Collection of all certificates or attribute certificates found
     * in the X509Store's that are matching the certSelect criteriums.
     *
     * @param certSelect a {@link Selector} object that will be used to select
     *            the certificates
     * @param certStores a List containing only {@link X509Store} objects. These
     *            are used to search for certificates.
     *
     * @return a Collection of all found {@link X509Certificate} or
     *         {@link org.bouncycastle.x509.X509AttributeCertificate} objects.
     *         May be empty but never <code>null</code>.
     */
protected static Collection findCertificates(X509CertStoreSelector certSelect, List certStores) throws AnnotatedException {
    Set certs = new HashSet();
    Iterator iter = certStores.iterator();
    while (iter.hasNext()) {
        Object obj = iter.next();
        if (obj instanceof X509Store) {
            X509Store certStore = (X509Store) obj;
            try {
                certs.addAll(certStore.getMatches(certSelect));
            } catch (StoreException e) {
                throw new AnnotatedException("Problem while picking certificates from X.509 store.", e);
            }
        } else {
            CertStore certStore = (CertStore) obj;
            try {
                certs.addAll(certStore.getCertificates(certSelect));
            } catch (CertStoreException e) {
                throw new AnnotatedException("Problem while picking certificates from certificate store.", e);
            }
        }
    }
    return certs;
}

Example 20 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project nhin-d by DirectProject.

the class CertGenerator method createCertFromCSR.

public static X509Certificate createCertFromCSR(PKCS10CertificationRequest certReq, CertCreateFields signerCert) throws Exception {
    certReq.verify();
    final CertificationRequestInfo reqInfo = certReq.getCertificationRequestInfo();
    final X509V3CertificateGenerator v1CertGen = new X509V3CertificateGenerator();
    final Calendar start = Calendar.getInstance();
    final Calendar end = Calendar.getInstance();
    end.add(Calendar.YEAR, 3);
    v1CertGen.setSerialNumber(BigInteger.valueOf(generatePositiveRandom()));
    // issuer is the parent cert
    v1CertGen.setIssuerDN(signerCert.getSignerCert().getSubjectX500Principal());
    v1CertGen.setNotBefore(start.getTime());
    v1CertGen.setNotAfter(end.getTime());
    v1CertGen.setSubjectDN(new X509Principal(reqInfo.getSubject().toString()));
    v1CertGen.setPublicKey(certReq.getPublicKey());
    v1CertGen.setSignatureAlgorithm("SHA256WithRSAEncryption");
    final ASN1Set attributesAsn1Set = reqInfo.getAttributes();
    X509Extensions certificateRequestExtensions = null;
    for (int i = 0; i < attributesAsn1Set.size(); ++i) {
        // There should be only only one attribute in the set. (that is, only
        // the `Extension Request`, but loop through to find it properly)
        final DEREncodable derEncodable = attributesAsn1Set.getObjectAt(i);
        if (derEncodable instanceof DERSequence) {
            final Attribute attribute = new Attribute((DERSequence) attributesAsn1Set.getObjectAt(i));
            if (attribute.getAttrType().equals(PKCSObjectIdentifiers.pkcs_9_at_extensionRequest)) {
                // The `Extension Request` attribute is present.
                final ASN1Set attributeValues = attribute.getAttrValues();
                // Assume that it is the first value of the set.
                if (attributeValues.size() >= 1) {
                    certificateRequestExtensions = new X509Extensions((ASN1Sequence) attributeValues.getObjectAt(0));
                // No need to search any more.
                //break;
                }
            }
        }
    }
    @SuppressWarnings("unchecked") Enumeration<DERObjectIdentifier> oids = certificateRequestExtensions.oids();
    while (oids.hasMoreElements()) {
        DERObjectIdentifier oid = oids.nextElement();
        X509Extension ex = certificateRequestExtensions.getExtension(oid);
        v1CertGen.addExtension(oid, ex.isCritical(), X509Extension.convertValueToObject(ex));
    }
    return v1CertGen.generate((PrivateKey) signerCert.getSignerKey(), CryptoExtensions.getJCEProviderName());
}