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

    }


    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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            throw new XMLSecurityException("certificate.noSki.lowVersion",
                                           exArgs);
         }


         DerValue dervalue = new DerValue(derEncodedValue);


         if (dervalue == null) {
            throw new XMLSecurityException("certificate.noSki.null");
         }


         if (dervalue.tag != DerValue.tag_OctetString) {
            throw new XMLSecurityException("certificate.noSki.notOctetString");
         }


         byte[] extensionValue = dervalue.getOctetString();


         /**
          * Strip away first two bytes from the DerValue (tag and length)
          */
         byte abyte0[] = new byte[extensionValue.length - 2];

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          /**
           * Use sun.security.util.DerValue if it is present.
           */
          try {
                  DerValue dervalue = new DerValue(derEncodedValue);
                  if (dervalue == null) {
                      throw new XMLSecurityException("certificate.noSki.null");
                  }
                  if (dervalue.tag != DerValue.tag_OctetString) {
                      throw new XMLSecurityException("certificate.noSki.notOctetString");
                  }
                  extensionValue = dervalue.getOctetString();
          } catch (NoClassDefFoundError e) {
          }


          /**
           * Fall back to org.bouncycastle.asn1.DERInputStream

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    public CertificatePoliciesExtension(Boolean critical, Object value)
    throws IOException {
        this.extensionId = PKIXExtensions.CertificatePolicies_Id;
        this.critical = critical.booleanValue();
        this.extensionValue = (byte[]) value;
        DerValue val = new DerValue(this.extensionValue);
        if (val.tag != DerValue.tag_Sequence) {
            throw new IOException("Invalid encoding for " +
                                   "CertificatePoliciesExtension.");
        }
        certPolicies = new ArrayList<PolicyInformation>();
        while (val.data.available() != 0) {
            DerValue seq = val.data.getDerValue();
            PolicyInformation policy = new PolicyInformation(seq);
            certPolicies.add(policy);
        }
    }

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                if (extVal == null) {
                    return true;
                }
                DerInputStream in = new DerInputStream(extVal);
                byte[] encoded = in.getOctetString();
                encoded = new DerValue(encoded).getUnalignedBitString()
                                                                .toByteArray();
                ext = new NetscapeCertTypeExtension(encoded);
            }
            Boolean val = (Boolean)ext.get(type);
            return val.booleanValue();

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        // Note that all the fields in DistributionPoint are defined as
        // being OPTIONAL, i.e., there could be an empty SEQUENCE, resulting
        // in val.data being null.
        while ((val.data != null) && (val.data.available() != 0)) {
            DerValue opt = val.data.getDerValue();


            if (opt.isContextSpecific(TAG_DIST_PT) && opt.isConstructed()) {
                if ((fullName != null) || (relativeName != null)) {
                    throw new IOException("Duplicate DistributionPointName in "
                                          + "DistributionPoint.");
                }
                DerValue distPnt = opt.data.getDerValue();
                if (distPnt.isContextSpecific(TAG_FULL_NAME)
                        && distPnt.isConstructed()) {
                    distPnt.resetTag(DerValue.tag_Sequence);
                    fullName = new GeneralNames(distPnt);
                } else if (distPnt.isContextSpecific(TAG_REL_NAME)
                        && distPnt.isConstructed()) {
                    distPnt.resetTag(DerValue.tag_Set);
                    relativeName = new RDN(distPnt);
                } else {
                    throw new IOException("Invalid DistributionPointName in "
                                          + "DistributionPoint");
                }

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            throw new IOException("Criticality cannot be false for " +
                                  "InhibitAnyPolicy");
        this.critical = critical.booleanValue();


        this.extensionValue = (byte[]) value;
        DerValue val = new DerValue(this.extensionValue);
        if (val.tag != DerValue.tag_Integer)
            throw new IOException("Invalid encoding of InhibitAnyPolicy: "
                                  + "data not integer");


        if (val.data == null)
            throw new IOException("Invalid encoding of InhibitAnyPolicy: "
                                  + "null data");
        int skipCertsValue = val.getInteger();
        if (skipCertsValue < -1)
            throw new IOException("Invalid value for skipCerts");
        if (skipCertsValue == -1) {
            this.skipCerts = Integer.MAX_VALUE;
        } else {

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            this.q = ((DSAParameterSpec)paramSpec).getQ();
            this.g = ((DSAParameterSpec)paramSpec).getG();
    }


    protected void engineInit(byte[] params) throws IOException {
        DerValue encodedParams = new DerValue(params);


        if (encodedParams.tag != DerValue.tag_Sequence) {
            throw new IOException("DSA params parsing error");
        }

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    throws InvalidKeyException {
        this.y = y;
        algid = new AlgIdDSA(p, q, g);


        try {
            key = new DerValue(DerValue.tag_Integer,
                               y.toByteArray()).toByteArray();
            encode();
        } catch (IOException e) {
            throw new InvalidKeyException("could not DER encode y: " +
                                          e.getMessage());

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    throws InvalidKeyException {
        this.x = x;
        algid = new AlgIdDSA(p, q, g);


        try {
            key = new DerValue(DerValue.tag_Integer,
                               x.toByteArray()).toByteArray();
            encode();
        } catch (IOException e) {
            InvalidKeyException ike = new InvalidKeyException(
                "could not DER encode x: " + e.getMessage());

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