Examples of sun.security.util.DerOutputStream

sun.security.util.DerOutputStream
Output stream marshaling DER-encoded data. This is eventually provided in the form of a byte array; there is no advance limit on the size of that byte array.
At this time, this class supports only a subset of the types of DER data encodings which are defined. That subset is sufficient for generating most X.509 certificates. @author David Brownell @author Amit Kapoor @author Hemma Prafullchandra

     *
     * @param out the OutputStream to write the extension to
     * @exception IOException on encoding errors
     */
    public void encode(OutputStream out) throws IOException {
        DerOutputStream  tmp = new DerOutputStream();
        if (extensionValue == null) {
            extensionId = PKIXExtensions.CertificateIssuer_Id;
            critical = true;
            encodeThis();
        }
        super.encode(tmp);
        out.write(tmp.toByteArray());
    }

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                }
                java.security.Certificate[] certs = id.certificates();
                if (certs!=null && certs.length>0) {
                    // we can only store one user cert per identity.
                    // convert old-style to new-style cert via the encoding
                    DerOutputStream dos = new DerOutputStream();
                    certs[0].encode(dos);
                    encoded = dos.toByteArray();
                    bais = new ByteArrayInputStream(encoded);
                    newCert = (X509Certificate)cf.generateCertificate(bais);
                    bais.close();


                    // if certificate is self-signed, make sure it verifies

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        this.extensions = extensions;
    }


    public byte[] encode() throws IOException {


        DerOutputStream request = new DerOutputStream();


        // encode version
        request.putInteger(version);


        // encode messageImprint
        DerOutputStream messageImprint = new DerOutputStream();
        DerOutputStream hashAlgorithm = new DerOutputStream();
        hashAlgorithm.putOID(hashAlgorithmId);
        messageImprint.write(DerValue.tag_Sequence, hashAlgorithm);
        messageImprint.putOctetString(hashValue);
        request.write(DerValue.tag_Sequence, messageImprint);


        // encode optional elements


        if (policyId != null) {
            request.putOID(new ObjectIdentifier(policyId));
        }
        if (nonce != null) {
            request.putInteger(nonce);
        }
        if (returnCertificate) {
            request.putBoolean(true);
        }


        DerOutputStream out = new DerOutputStream();
        out.write(DerValue.tag_Sequence, request);
        return out.toByteArray();
    }

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    private void encodeThis() throws IOException {
        if (keyUsages == null || keyUsages.isEmpty()) {
            this.extensionValue = null;
            return;
        }
        DerOutputStream os = new DerOutputStream();
        DerOutputStream tmp = new DerOutputStream();


        for (int i = 0; i < keyUsages.size(); i++) {
            tmp.putOID(keyUsages.elementAt(i));
        }


        os.write(DerValue.tag_Sequence, tmp);
        this.extensionValue = os.toByteArray();
    }

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     *
     * @param out the DerOutputStream to write the extension to.
     * @exception IOException on encoding errors.
     */
    public void encode(OutputStream out) throws IOException {
        DerOutputStream tmp = new DerOutputStream();
        if (extensionValue == null) {
          extensionId = PKIXExtensions.ExtendedKeyUsage_Id;
          critical = false;
          encodeThis();
        }
        super.encode(tmp);
        out.write(tmp.toByteArray());
    }

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     * (Also called by the subclass)
     */
    protected void encode(OutputStream out, ObjectIdentifier extensionId,
        boolean isCritical) throws IOException {


        DerOutputStream tmp = new DerOutputStream();
        if (this.extensionValue == null) {
            this.extensionId = extensionId;
            this.critical = isCritical;
            encodeThis();
        }
        super.encode(tmp);
        out.write(tmp.toByteArray());
    }

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     // Encode this extension value
    private void encodeThis() throws IOException {
        if (distributionPoints.isEmpty()) {
            this.extensionValue = null;
        } else {
            DerOutputStream pnts = new DerOutputStream();
            for (DistributionPoint point : distributionPoints) {
                point.encode(pnts);
            }
            DerOutputStream seq = new DerOutputStream();
            seq.write(DerValue.tag_Sequence, pnts);
            this.extensionValue = seq.toByteArray();
        }
    }

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     *
     * @param out the output stream.
     * @exception IOException on encoding error.
     */
    public void encode(OutputStream out) throws IOException {
        DerOutputStream tmp = new DerOutputStream();
        if (this.extensionValue == null) {
            this.extensionId = PKIXExtensions.IssuingDistributionPoint_Id;
            this.critical = false;
            encodeThis();
        }
        super.encode(tmp);
        out.write(tmp.toByteArray());
    }

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            this.extensionValue = null;
            return;


        }


        DerOutputStream tagged = new DerOutputStream();


        if (distributionPoint != null) {
            DerOutputStream tmp = new DerOutputStream();
            distributionPoint.encode(tmp);
            tagged.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT, true,
                TAG_DISTRIBUTION_POINT), tmp);
        }


        if (hasOnlyUserCerts) {
            DerOutputStream tmp = new DerOutputStream();
            tmp.putBoolean(hasOnlyUserCerts);
            tagged.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT, false,
                TAG_ONLY_USER_CERTS), tmp);
        }


        if (hasOnlyCACerts) {
            DerOutputStream tmp = new DerOutputStream();
            tmp.putBoolean(hasOnlyCACerts);
            tagged.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT, false,
                TAG_ONLY_CA_CERTS), tmp);
        }


        if (revocationReasons != null) {
            DerOutputStream tmp = new DerOutputStream();
            revocationReasons.encode(tmp);
            tagged.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT, false,
                TAG_ONLY_SOME_REASONS), tmp);
        }


        if (isIndirectCRL) {
            DerOutputStream tmp = new DerOutputStream();
            tmp.putBoolean(isIndirectCRL);
            tagged.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT, false,
                TAG_INDIRECT_CRL), tmp);
        }


        if (hasOnlyAttributeCerts) {
            DerOutputStream tmp = new DerOutputStream();
            tmp.putBoolean(hasOnlyAttributeCerts);
            tagged.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT, false,
                TAG_ONLY_ATTRIBUTE_CERTS), tmp);
        }


        DerOutputStream seq = new DerOutputStream();
        seq.write(DerValue.tag_Sequence, tagged);
        this.extensionValue = seq.toByteArray();
    }

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        BigInteger k = generateK(presetQ);
        BigInteger r = generateR(presetP, presetQ, presetG, k);
        BigInteger s = generateS(presetX, presetQ, r, k);


        try {
            DerOutputStream outseq = new DerOutputStream(100);
            outseq.putInteger(r);
            outseq.putInteger(s);
            DerValue result = new DerValue(DerValue.tag_Sequence,
                                           outseq.toByteArray());


            return result.toByteArray();


        } catch (IOException e) {
            throw new SignatureException("error encoding signature");

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