Examples of sun.security.util.DerValue

sun.security.util.DerValue
Represents a single DER-encoded value. DER encoding rules are a subset of the "Basic" Encoding Rules (BER), but they only support a single way ("Definite" encoding) to encode any given value.
All DER-encoded data are triples {type, length, data}. This class represents such tagged values as they have been read (or constructed), and provides structured access to the encoded data.
At this time, this class supports only a subset of the types of DER data encodings which are defined. That subset is sufficient for parsing most X.509 certificates, and working with selected additional formats (such as PKCS #10 certificate requests, and some kinds of PKCS #7 data). A note with respect to T61/Teletex strings: From RFC 1617, section 4.1.3 and RFC 3280, section 4.1.2.4., we assume that this kind of string will contain ISO-8859-1 characters only. @author David Brownell @author Amit Kapoor @author Hemma Prafullchandra


        // The parseKey() method of PKCS8Key parses the key
        // algorithm and instantiates the appropriate key factory,
        // which in turn parses the key material.
        try {
            return PKCS8Key.parseKey(new DerValue(plainKey));
        } catch (IOException ioe) {
            throw new UnrecoverableKeyException(ioe.getMessage());
        }
    }

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            }


            // else check against common name in the subject field
            X500Name subject = HostnameChecker.getSubjectX500Name(peerCert);


            DerValue derValue = subject.findMostSpecificAttribute
                                                (X500Name.commonName_oid);
            if (derValue != null) {
                try {
                    String name = derValue.getAsString();
                    return name;
                } catch (IOException e) {
                    // ignore
                }
            }

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    }


    private void readObject(ObjectInputStream ois)
                throws IOException, ClassNotFoundException {
        try {
            EncryptionKey encKey = new EncryptionKey(new
                                     DerValue((byte[])ois.readObject()));
            keyType = encKey.getEType();
            keyBytes = encKey.getBytes();
        } catch (Asn1Exception ae) {
            throw new IOException(ae.getMessage());

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    }


    private PublicKey generatePublic(ECPoint point, ECParameterSpec params) throws PKCS11Exception {
        byte[] encodedParams = ECParameters.encodeParameters(params);
        byte[] encodedPoint = null;
        DerValue pkECPoint = new DerValue(DerValue.tag_OctetString,
            ECParameters.encodePoint(point, params.getCurve()));


        try {
            encodedPoint = pkECPoint.toByteArray();
        } catch (IOException e) {
            throw new IllegalArgumentException("Could not DER encode point", e);
        }


        CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {

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        if (!(value instanceof byte[])) {
            throw new IOException("Illegal argument type");
        }


        extensionValue = (byte[])value;
        DerValue val = new DerValue(extensionValue);
        if (val.tag != DerValue.tag_Sequence) {
            throw new IOException("Invalid encoding for " + extensionName +
                                  " extension.");
        }
        distributionPoints = new ArrayList<DistributionPoint>();
        while (val.data.available() != 0) {
            DerValue seq = val.data.getDerValue();
            DistributionPoint point = new DistributionPoint(seq);
            distributionPoints.add(point);
        }
        this.extensionName = extensionName;
    }

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        if (!(value instanceof byte[])) {
            throw new IOException("Illegal argument type");
        }


        extensionValue = (byte[])value;
        DerValue val = new DerValue(extensionValue);
        if (val.tag != DerValue.tag_Sequence) {
            throw new IOException("Invalid encoding for " +
                                  "IssuingDistributionPointExtension.");
        }


        // All the elements in issuingDistributionPoint are optional
        if ((val.data == null) || (val.data.available() == 0)) {
            return;
        }


        DerInputStream in = val.data;
        while (in != null && in.available() != 0) {
            DerValue opt = in.getDerValue();


            if (opt.isContextSpecific(TAG_DISTRIBUTION_POINT) &&
                opt.isConstructed()) {
                distributionPoint =
                    new DistributionPointName(opt.data.getDerValue());
            } else if (opt.isContextSpecific(TAG_ONLY_USER_CERTS) &&
                       !opt.isConstructed()) {
                opt.resetTag(DerValue.tag_Boolean);
                hasOnlyUserCerts = opt.getBoolean();
            } else if (opt.isContextSpecific(TAG_ONLY_CA_CERTS) &&
                  !opt.isConstructed()) {
                opt.resetTag(DerValue.tag_Boolean);
                hasOnlyCACerts = opt.getBoolean();
            } else if (opt.isContextSpecific(TAG_ONLY_SOME_REASONS) &&
                       !opt.isConstructed()) {
                revocationReasons = new ReasonFlags(opt); // expects tag implicit
            } else if (opt.isContextSpecific(TAG_INDIRECT_CRL) &&
                       !opt.isConstructed()) {
                opt.resetTag(DerValue.tag_Boolean);
                isIndirectCRL = opt.getBoolean();
            } else if (opt.isContextSpecific(TAG_ONLY_ATTRIBUTE_CERTS) &&
                       !opt.isConstructed()) {
                opt.resetTag(DerValue.tag_Boolean);
                hasOnlyAttributeCerts = opt.getBoolean();
            } else {
                throw new IOException
                    ("Invalid encoding of IssuingDistributionPoint");
            }
        }

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        ticket = credMessg.tickets[0];


        byte[] temp = credMessg.encPart.decrypt(key,
            KeyUsage.KU_ENC_KRB_CRED_PART);
        byte[] plainText = credMessg.encPart.reset(temp, true);
        DerValue encoding = new DerValue(plainText);
        EncKrbCredPart encPart = new EncKrbCredPart(encoding);


        timeStamp = encPart.timeStamp;


        KrbCredInfo credInfo = encPart.ticketInfo[0];

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            };
            fetchAttributes(attributes);
            try {
                params = P11ECKeyFactory.decodeParameters
                            (attributes[1].getByteArray());
                DerValue wECPoint = new DerValue(attributes[0].getByteArray());
                if (wECPoint.getTag() != DerValue.tag_OctetString)
                    throw new IOException("Unexpected tag: " +
                        wECPoint.getTag());
                params = P11ECKeyFactory.decodeParameters
                            (attributes[1].getByteArray());
                w = P11ECKeyFactory.decodePoint
                    (wECPoint.getDataBytes(), params.getCurve());




            } catch (Exception e) {
                throw new RuntimeException("Could not parse key values", e);
            }

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        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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        if (!(value instanceof byte[])) {
            throw new IOException("Illegal argument type");
        }


        extensionValue = (byte[])value;
        DerValue val = new DerValue(extensionValue);
        if (val.tag != DerValue.tag_Sequence) {
            throw new IOException("Invalid encoding for " +
                                  "AuthorityInfoAccessExtension.");
        }
        accessDescriptions = new ArrayList<AccessDescription>();
        while (val.data.available() != 0) {
            DerValue seq = val.data.getDerValue();
            AccessDescription accessDescription = new AccessDescription(seq);
            accessDescriptions.add(accessDescription);
        }
    }

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