Examples with DERNull org.bouncycastle.asn1.DERNull used on opensource projects

Example 1 with DERNull

use of org.bouncycastle.asn1.DERNull in project xipki by xipki.

the class IdentifiedX509Certprofile method getExtensions.

/**
 * TODO.
 * @param requestedSubject
 *          Subject requested subject. Must not be {@code null}.
 * @param grantedSubject
 *          Granted subject. Must not be {@code null}.
 * @param requestedExtensions
 *          Extensions requested by the requestor. Could be {@code null}.
 * @param publicKeyInfo
 *          Subject public key. Must not be {@code null}.
 * @param publicCaInfo
 *          CA information. Must not be {@code null}.
 * @param crlSignerCert
 *          CRL signer certificate. Could be {@code null}.
 * @param notBefore
 *          NotBefore. Must not be {@code null}.
 * @param notAfter
 *          NotAfter. Must not be {@code null}.
 * @param caInfo
 *          CA information.
 * @return the extensions of the certificate to be issued.
 */
public ExtensionValues getExtensions(X500Name requestedSubject, X500Name grantedSubject, Extensions requestedExtensions, SubjectPublicKeyInfo publicKeyInfo, PublicCaInfo publicCaInfo, X509Certificate crlSignerCert, Date notBefore, Date notAfter) throws CertprofileException, BadCertTemplateException {
    ParamUtil.requireNonNull("publicKeyInfo", publicKeyInfo);
    ExtensionValues values = new ExtensionValues();
    Map<ASN1ObjectIdentifier, ExtensionControl> controls = new HashMap<>(certprofile.getExtensionControls());
    Set<ASN1ObjectIdentifier> neededExtTypes = new HashSet<>();
    Set<ASN1ObjectIdentifier> wantedExtTypes = new HashSet<>();
    if (requestedExtensions != null) {
        Extension reqExtension = requestedExtensions.getExtension(ObjectIdentifiers.id_xipki_ext_cmpRequestExtensions);
        if (reqExtension != null) {
            ExtensionExistence ee = ExtensionExistence.getInstance(reqExtension.getParsedValue());
            neededExtTypes.addAll(ee.getNeedExtensions());
            wantedExtTypes.addAll(ee.getWantExtensions());
        }
        for (ASN1ObjectIdentifier oid : neededExtTypes) {
            if (wantedExtTypes.contains(oid)) {
                wantedExtTypes.remove(oid);
            }
            if (!controls.containsKey(oid)) {
                throw new BadCertTemplateException("could not add needed extension " + oid.getId());
            }
        }
    }
    // SubjectKeyIdentifier
    ASN1ObjectIdentifier extType = Extension.subjectKeyIdentifier;
    ExtensionControl extControl = controls.remove(extType);
    if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
        byte[] encodedSpki = publicKeyInfo.getPublicKeyData().getBytes();
        byte[] skiValue = HashAlgo.SHA1.hash(encodedSpki);
        SubjectKeyIdentifier value = new SubjectKeyIdentifier(skiValue);
        addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
    }
    // Authority key identifier
    extType = Extension.authorityKeyIdentifier;
    extControl = controls.remove(extType);
    if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
        byte[] ikiValue = publicCaInfo.getSubjectKeyIdentifer();
        AuthorityKeyIdentifier value = null;
        if (ikiValue != null) {
            if (certprofile.includesIssuerAndSerialInAki()) {
                GeneralNames x509CaSubject = new GeneralNames(new GeneralName(publicCaInfo.getX500Subject()));
                value = new AuthorityKeyIdentifier(ikiValue, x509CaSubject, publicCaInfo.getSerialNumber());
            } else {
                value = new AuthorityKeyIdentifier(ikiValue);
            }
        }
        addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
    }
    // IssuerAltName
    extType = Extension.issuerAlternativeName;
    extControl = controls.remove(extType);
    if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
        GeneralNames value = publicCaInfo.getSubjectAltName();
        addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
    }
    // AuthorityInfoAccess
    extType = Extension.authorityInfoAccess;
    extControl = controls.remove(extType);
    if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
        AuthorityInfoAccessControl aiaControl = certprofile.getAiaControl();
        List<String> caIssuers = null;
        if (aiaControl == null || aiaControl.isIncludesCaIssuers()) {
            caIssuers = publicCaInfo.getCaCertUris();
        }
        List<String> ocspUris = null;
        if (aiaControl == null || aiaControl.isIncludesOcsp()) {
            ocspUris = publicCaInfo.getOcspUris();
        }
        if (CollectionUtil.isNonEmpty(caIssuers) || CollectionUtil.isNonEmpty(ocspUris)) {
            AuthorityInformationAccess value = CaUtil.createAuthorityInformationAccess(caIssuers, ocspUris);
            addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
        }
    }
    if (controls.containsKey(Extension.cRLDistributionPoints) || controls.containsKey(Extension.freshestCRL)) {
        X500Name crlSignerSubject = (crlSignerCert == null) ? null : X500Name.getInstance(crlSignerCert.getSubjectX500Principal().getEncoded());
        X500Name x500CaPrincipal = publicCaInfo.getX500Subject();
        // CRLDistributionPoints
        extType = Extension.cRLDistributionPoints;
        extControl = controls.remove(extType);
        if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
            if (CollectionUtil.isNonEmpty(publicCaInfo.getCrlUris())) {
                CRLDistPoint value = CaUtil.createCrlDistributionPoints(publicCaInfo.getCrlUris(), x500CaPrincipal, crlSignerSubject);
                addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
            }
        }
        // FreshestCRL
        extType = Extension.freshestCRL;
        extControl = controls.remove(extType);
        if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
            if (CollectionUtil.isNonEmpty(publicCaInfo.getDeltaCrlUris())) {
                CRLDistPoint value = CaUtil.createCrlDistributionPoints(publicCaInfo.getDeltaCrlUris(), x500CaPrincipal, crlSignerSubject);
                addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
            }
        }
    }
    // BasicConstraints
    extType = Extension.basicConstraints;
    extControl = controls.remove(extType);
    if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
        BasicConstraints value = CaUtil.createBasicConstraints(certprofile.getCertLevel(), certprofile.getPathLenBasicConstraint());
        addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
    }
    // KeyUsage
    extType = Extension.keyUsage;
    extControl = controls.remove(extType);
    if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
        Set<KeyUsage> usages = new HashSet<>();
        Set<KeyUsageControl> usageOccs = certprofile.getKeyUsage();
        for (KeyUsageControl k : usageOccs) {
            if (k.isRequired()) {
                usages.add(k.getKeyUsage());
            }
        }
        // the optional KeyUsage will only be set if requested explicitly
        if (requestedExtensions != null && extControl.isRequest()) {
            addRequestedKeyusage(usages, requestedExtensions, usageOccs);
        }
        org.bouncycastle.asn1.x509.KeyUsage value = X509Util.createKeyUsage(usages);
        addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
    }
    // ExtendedKeyUsage
    extType = Extension.extendedKeyUsage;
    extControl = controls.remove(extType);
    if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
        List<ASN1ObjectIdentifier> usages = new LinkedList<>();
        Set<ExtKeyUsageControl> usageOccs = certprofile.getExtendedKeyUsages();
        for (ExtKeyUsageControl k : usageOccs) {
            if (k.isRequired()) {
                usages.add(k.getExtKeyUsage());
            }
        }
        // the optional ExtKeyUsage will only be set if requested explicitly
        if (requestedExtensions != null && extControl.isRequest()) {
            addRequestedExtKeyusage(usages, requestedExtensions, usageOccs);
        }
        if (extControl.isCritical() && usages.contains(ObjectIdentifiers.id_anyExtendedKeyUsage)) {
            extControl = new ExtensionControl(false, extControl.isRequired(), extControl.isRequest());
        }
        ExtendedKeyUsage value = X509Util.createExtendedUsage(usages);
        addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
    }
    // ocsp-nocheck
    extType = ObjectIdentifiers.id_extension_pkix_ocsp_nocheck;
    extControl = controls.remove(extType);
    if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
        // the extension ocsp-nocheck will only be set if requested explicitly
        DERNull value = DERNull.INSTANCE;
        addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
    }
    // SubjectInfoAccess
    extType = Extension.subjectInfoAccess;
    extControl = controls.remove(extType);
    if (extControl != null && addMe(extType, extControl, neededExtTypes, wantedExtTypes)) {
        ASN1Sequence value = null;
        if (requestedExtensions != null && extControl.isRequest()) {
            value = createSubjectInfoAccess(requestedExtensions, certprofile.getSubjectInfoAccessModes());
        }
        addExtension(values, extType, value, extControl, neededExtTypes, wantedExtTypes);
    }
    // remove extensions that are not required frrom the list
    List<ASN1ObjectIdentifier> listToRm = null;
    for (ASN1ObjectIdentifier extnType : controls.keySet()) {
        ExtensionControl ctrl = controls.get(extnType);
        if (ctrl.isRequired()) {
            continue;
        }
        if (neededExtTypes.contains(extnType) || wantedExtTypes.contains(extnType)) {
            continue;
        }
        if (listToRm == null) {
            listToRm = new LinkedList<>();
        }
        listToRm.add(extnType);
    }
    if (listToRm != null) {
        for (ASN1ObjectIdentifier extnType : listToRm) {
            controls.remove(extnType);
        }
    }
    ExtensionValues subvalues = certprofile.getExtensions(Collections.unmodifiableMap(controls), requestedSubject, grantedSubject, requestedExtensions, notBefore, notAfter, publicCaInfo);
    Set<ASN1ObjectIdentifier> extTypes = new HashSet<>(controls.keySet());
    for (ASN1ObjectIdentifier type : extTypes) {
        extControl = controls.remove(type);
        boolean addMe = addMe(type, extControl, neededExtTypes, wantedExtTypes);
        if (addMe) {
            ExtensionValue value = null;
            if (requestedExtensions != null && extControl.isRequest()) {
                Extension reqExt = requestedExtensions.getExtension(type);
                if (reqExt != null) {
                    value = new ExtensionValue(reqExt.isCritical(), reqExt.getParsedValue());
                }
            }
            if (value == null) {
                value = subvalues.getExtensionValue(type);
            }
            addExtension(values, type, value, extControl, neededExtTypes, wantedExtTypes);
        }
    }
    Set<ASN1ObjectIdentifier> unprocessedExtTypes = new HashSet<>();
    for (ASN1ObjectIdentifier type : controls.keySet()) {
        if (controls.get(type).isRequired()) {
            unprocessedExtTypes.add(type);
        }
    }
    if (CollectionUtil.isNonEmpty(unprocessedExtTypes)) {
        throw new CertprofileException("could not add required extensions " + toString(unprocessedExtTypes));
    }
    if (CollectionUtil.isNonEmpty(neededExtTypes)) {
        throw new BadCertTemplateException("could not add requested extensions " + toString(neededExtTypes));
    }
    return values;
}

Example 2 with DERNull

use of org.bouncycastle.asn1.DERNull in project keepass2android by PhilippC.

the class ASN1Dump method _dumpAsString.

/**
 * dump a DER object as a formatted string with indentation
 *
 * @param obj the DERObject to be dumped out.
 */
static void _dumpAsString(String indent, boolean verbose, DERObject obj, StringBuffer buf) {
    String nl = System.getProperty("line.separator");
    if (obj instanceof ASN1Sequence) {
        Enumeration e = ((ASN1Sequence) obj).getObjects();
        String tab = indent + TAB;
        buf.append(indent);
        if (obj instanceof BERConstructedSequence) {
            buf.append("BER ConstructedSequence");
        } else if (obj instanceof DERConstructedSequence) {
            buf.append("DER ConstructedSequence");
        } else if (obj instanceof BERSequence) {
            buf.append("BER Sequence");
        } else if (obj instanceof DERSequence) {
            buf.append("DER Sequence");
        } else {
            buf.append("Sequence");
        }
        buf.append(nl);
        while (e.hasMoreElements()) {
            Object o = e.nextElement();
            if (o == null || o.equals(new DERNull())) {
                buf.append(tab);
                buf.append("NULL");
                buf.append(nl);
            } else if (o instanceof DERObject) {
                _dumpAsString(tab, verbose, (DERObject) o, buf);
            } else {
                _dumpAsString(tab, verbose, ((DEREncodable) o).getDERObject(), buf);
            }
        }
    } else if (obj instanceof DERTaggedObject) {
        String tab = indent + TAB;
        buf.append(indent);
        if (obj instanceof BERTaggedObject) {
            buf.append("BER Tagged [");
        } else {
            buf.append("Tagged [");
        }
        DERTaggedObject o = (DERTaggedObject) obj;
        buf.append(Integer.toString(o.getTagNo()));
        buf.append(']');
        if (!o.isExplicit()) {
            buf.append(" IMPLICIT ");
        }
        buf.append(nl);
        if (o.isEmpty()) {
            buf.append(tab);
            buf.append("EMPTY");
            buf.append(nl);
        } else {
            _dumpAsString(tab, verbose, o.getObject(), buf);
        }
    } else if (obj instanceof DERConstructedSet) {
        Enumeration e = ((ASN1Set) obj).getObjects();
        String tab = indent + TAB;
        buf.append(indent);
        buf.append("ConstructedSet");
        buf.append(nl);
        while (e.hasMoreElements()) {
            Object o = e.nextElement();
            if (o == null) {
                buf.append(tab);
                buf.append("NULL");
                buf.append(nl);
            } else if (o instanceof DERObject) {
                _dumpAsString(tab, verbose, (DERObject) o, buf);
            } else {
                _dumpAsString(tab, verbose, ((DEREncodable) o).getDERObject(), buf);
            }
        }
    } else if (obj instanceof BERSet) {
        Enumeration e = ((ASN1Set) obj).getObjects();
        String tab = indent + TAB;
        buf.append(indent);
        buf.append("BER Set");
        buf.append(nl);
        while (e.hasMoreElements()) {
            Object o = e.nextElement();
            if (o == null) {
                buf.append(tab);
                buf.append("NULL");
                buf.append(nl);
            } else if (o instanceof DERObject) {
                _dumpAsString(tab, verbose, (DERObject) o, buf);
            } else {
                _dumpAsString(tab, verbose, ((DEREncodable) o).getDERObject(), buf);
            }
        }
    } else if (obj instanceof DERSet) {
        Enumeration e = ((ASN1Set) obj).getObjects();
        String tab = indent + TAB;
        buf.append(indent);
        buf.append("DER Set");
        buf.append(nl);
        while (e.hasMoreElements()) {
            Object o = e.nextElement();
            if (o == null) {
                buf.append(tab);
                buf.append("NULL");
                buf.append(nl);
            } else if (o instanceof DERObject) {
                _dumpAsString(tab, verbose, (DERObject) o, buf);
            } else {
                _dumpAsString(tab, verbose, ((DEREncodable) o).getDERObject(), buf);
            }
        }
    } else if (obj instanceof DERObjectIdentifier) {
        buf.append(indent + "ObjectIdentifier(" + ((DERObjectIdentifier) obj).getId() + ")" + nl);
    } else if (obj instanceof DERBoolean) {
        buf.append(indent + "Boolean(" + ((DERBoolean) obj).isTrue() + ")" + nl);
    } else if (obj instanceof DERInteger) {
        buf.append(indent + "Integer(" + ((DERInteger) obj).getValue() + ")" + nl);
    } else if (obj instanceof BERConstructedOctetString) {
        ASN1OctetString oct = (ASN1OctetString) obj;
        buf.append(indent + "BER Constructed Octet String" + "[" + oct.getOctets().length + "] ");
        if (verbose) {
            buf.append(dumpBinaryDataAsString(indent, oct.getOctets()));
        } else {
            buf.append(nl);
        }
    } else if (obj instanceof DEROctetString) {
        ASN1OctetString oct = (ASN1OctetString) obj;
        buf.append(indent + "DER Octet String" + "[" + oct.getOctets().length + "] ");
        if (verbose) {
            buf.append(dumpBinaryDataAsString(indent, oct.getOctets()));
        } else {
            buf.append(nl);
        }
    } else if (obj instanceof DERBitString) {
        DERBitString bt = (DERBitString) obj;
        buf.append(indent + "DER Bit String" + "[" + bt.getBytes().length + ", " + bt.getPadBits() + "] ");
        if (verbose) {
            buf.append(dumpBinaryDataAsString(indent, bt.getBytes()));
        } else {
            buf.append(nl);
        }
    } else if (obj instanceof DERIA5String) {
        buf.append(indent + "IA5String(" + ((DERIA5String) obj).getString() + ") " + nl);
    } else if (obj instanceof DERUTF8String) {
        buf.append(indent + "UTF8String(" + ((DERUTF8String) obj).getString() + ") " + nl);
    } else if (obj instanceof DERPrintableString) {
        buf.append(indent + "PrintableString(" + ((DERPrintableString) obj).getString() + ") " + nl);
    } else if (obj instanceof DERVisibleString) {
        buf.append(indent + "VisibleString(" + ((DERVisibleString) obj).getString() + ") " + nl);
    } else if (obj instanceof DERBMPString) {
        buf.append(indent + "BMPString(" + ((DERBMPString) obj).getString() + ") " + nl);
    } else if (obj instanceof DERT61String) {
        buf.append(indent + "T61String(" + ((DERT61String) obj).getString() + ") " + nl);
    } else if (obj instanceof DERUTCTime) {
        buf.append(indent + "UTCTime(" + ((DERUTCTime) obj).getTime() + ") " + nl);
    } else if (obj instanceof DERGeneralizedTime) {
        buf.append(indent + "GeneralizedTime(" + ((DERGeneralizedTime) obj).getTime() + ") " + nl);
    } else if (obj instanceof DERUnknownTag) {
        buf.append(indent + "Unknown " + Integer.toString(((DERUnknownTag) obj).getTag(), 16) + " " + new String(Hex.encode(((DERUnknownTag) obj).getData())) + nl);
    } else if (obj instanceof BERApplicationSpecific) {
        buf.append(outputApplicationSpecific("BER", indent, verbose, obj, nl));
    } else if (obj instanceof DERApplicationSpecific) {
        buf.append(outputApplicationSpecific("DER", indent, verbose, obj, nl));
    } else if (obj instanceof DEREnumerated) {
        DEREnumerated en = (DEREnumerated) obj;
        buf.append(indent + "DER Enumerated(" + en.getValue() + ")" + nl);
    } else if (obj instanceof DERExternal) {
        DERExternal ext = (DERExternal) obj;
        buf.append(indent + "External " + nl);
        String tab = indent + TAB;
        if (ext.getDirectReference() != null) {
            buf.append(tab + "Direct Reference: " + ext.getDirectReference().getId() + nl);
        }
        if (ext.getIndirectReference() != null) {
            buf.append(tab + "Indirect Reference: " + ext.getIndirectReference().toString() + nl);
        }
        if (ext.getDataValueDescriptor() != null) {
            _dumpAsString(tab, verbose, ext.getDataValueDescriptor(), buf);
        }
        buf.append(tab + "Encoding: " + ext.getEncoding() + nl);
        _dumpAsString(tab, verbose, ext.getExternalContent(), buf);
    } else {
        buf.append(indent + obj.toString() + nl);
    }
}

Example 3 with DERNull

use of org.bouncycastle.asn1.DERNull in project signer by demoiselle.

the class SelectedCommitmentTypes method parse.

@Override
public void parse(ASN1Primitive derObject) {
    ASN1Sequence derSequence = ASN1Object.getDERSequence(derObject);
    ASN1Primitive object = derSequence.getObjectAt(0).toASN1Primitive();
    if (object instanceof DERNull) {
        this.recognizedCommitmentType = null;
    } else if (object instanceof DERSequence) {
        this.recognizedCommitmentType = new CommitmentType();
        this.recognizedCommitmentType.parse(object);
    }
}

Example 4 with DERNull

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

the class SplitProviderDirectSignedDataGenerator method generate.

/**
	 * {@inheritDoc}
	 */
@Override
public CMSSignedData generate(String signedContentType, CMSProcessable content, boolean encapsulate, String sigProvider, boolean addDefaultAttributes) throws NoSuchAlgorithmException, NoSuchProviderException, CMSException {
    final ASN1EncodableVector digestAlgs = new ASN1EncodableVector();
    final ASN1EncodableVector signerInfos = new ASN1EncodableVector();
    // clear the current preserved digest state
    _digests.clear();
    //
    // add the SignerInfo objects
    //
    DERObjectIdentifier contentTypeOID;
    boolean isCounterSignature;
    if (signedContentType != null) {
        contentTypeOID = new DERObjectIdentifier(signedContentType);
        isCounterSignature = false;
    } else {
        contentTypeOID = CMSObjectIdentifiers.data;
        isCounterSignature = true;
    }
    for (DirectTargetedSignerInf signer : privateSigners) {
        AlgorithmIdentifier digAlgId;
        try {
            digAlgId = new AlgorithmIdentifier(new DERObjectIdentifier(signer.digestOID), new DERNull());
            digestAlgs.add(digAlgId);
            try {
                signerInfos.add(signer.toSignerInfo(contentTypeOID, content, rand, sigProvider, digestProvider, addDefaultAttributes, isCounterSignature));
            } catch (ClassCastException e) {
                // try again with the digest provider... the key may need to use a different provider than the sig provider
                signerInfos.add(signer.toSignerInfo(contentTypeOID, content, rand, digestProvider, digestProvider, addDefaultAttributes, isCounterSignature));
            }
        } catch (IOException e) {
            throw new CMSException("encoding error.", e);
        } catch (InvalidKeyException e) {
            throw new CMSException("key inappropriate for signature.", e);
        } catch (SignatureException e) {
            throw new CMSException("error creating signature.", e);
        } catch (CertificateEncodingException e) {
            throw new CMSException("error creating sid.", e);
        }
    }
    ASN1Set certificates = null;
    if (_certs.size() != 0) {
        certificates = createBerSetFromList(_certs);
    }
    ASN1Set certrevlist = null;
    if (_crls.size() != 0) {
        certrevlist = createBerSetFromList(_crls);
    }
    ContentInfo encInfo;
    if (encapsulate) {
        ByteArrayOutputStream bOut = new ByteArrayOutputStream();
        try {
            content.write(bOut);
        } catch (IOException e) {
            throw new CMSException("encapsulation error.", e);
        }
        ASN1OctetString octs = new BERConstructedOctetString(bOut.toByteArray());
        encInfo = new ContentInfo(contentTypeOID, octs);
    } else {
        encInfo = new ContentInfo(contentTypeOID, null);
    }
    SignedData sd = new SignedData(new DERSet(digestAlgs), encInfo, certificates, certrevlist, new DERSet(signerInfos));
    ContentInfo contentInfo = new ContentInfo(PKCSObjectIdentifiers.signedData, sd);
    return new CMSSignedData(content, contentInfo);
}

Example 5 with DERNull

use of org.bouncycastle.asn1.DERNull in project BiglyBT by BiglySoftware.

the class JCERSAPublicKey method getEncoded.

@Override
public byte[] getEncoded() {
    ByteArrayOutputStream bOut = new ByteArrayOutputStream();
    DEROutputStream dOut = new DEROutputStream(bOut);
    SubjectPublicKeyInfo info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(PKCSObjectIdentifiers.rsaEncryption, new DERNull()), new RSAPublicKeyStructure(getModulus(), getPublicExponent()).getDERObject());
    try {
        dOut.writeObject(info);
        dOut.close();
    } catch (IOException e) {
        throw new RuntimeException("Error encoding RSA public key");
    }
    return bOut.toByteArray();
}