Package org.bouncycastle.asn1.x509

Examples of org.bouncycastle.asn1.x509.AlgorithmIdentifier

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        try
        {
            X509EncodedKeySpec      xspec = new X509EncodedKeySpec(new DERBitString(subjectPKInfo).getBytes());
            AlgorithmIdentifier     keyAlg = subjectPKInfo.getAlgorithm();
            try
            {
                if (provider == null)
                {
                    return KeyFactory.getInstance(keyAlg.getAlgorithm().getId()).generatePublic(xspec);
                }
                else
                {
                    return KeyFactory.getInstance(keyAlg.getAlgorithm().getId(), provider).generatePublic(xspec);
                }
            }
            catch (NoSuchAlgorithmException e)
            {
                //
                // try an alternate
                //
                if (keyAlgorithms.get(keyAlg.getObjectId()) != null)
                {
                    String  keyAlgorithm = (String)keyAlgorithms.get(keyAlg.getObjectId());
                   
                    if (provider == null)
                    {
                        return KeyFactory.getInstance(keyAlgorithm).generatePublic(xspec);
                    }
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     * @return the appropriate key parameter
     * @throws IOException on an error decoding the key
     */
    public static AsymmetricKeyParameter createKey(SubjectPublicKeyInfo keyInfo) throws IOException
    {
        AlgorithmIdentifier algId = keyInfo.getAlgorithm();

        if (algId.getAlgorithm().equals(PKCSObjectIdentifiers.rsaEncryption)
            || algId.getAlgorithm().equals(X509ObjectIdentifiers.id_ea_rsa))
        {
            RSAPublicKey pubKey = RSAPublicKey.getInstance(keyInfo.parsePublicKey());

            return new RSAKeyParameters(false, pubKey.getModulus(), pubKey.getPublicExponent());
        }
        else if (algId.getAlgorithm().equals(X9ObjectIdentifiers.dhpublicnumber))
        {
            DHPublicKey dhPublicKey = DHPublicKey.getInstance(keyInfo.parsePublicKey());

            BigInteger y = dhPublicKey.getY().getValue();

            DHDomainParameters dhParams = DHDomainParameters.getInstance(algId.getParameters());

            BigInteger p = dhParams.getP().getValue();
            BigInteger g = dhParams.getG().getValue();
            BigInteger q = dhParams.getQ().getValue();

            BigInteger j = null;
            if (dhParams.getJ() != null)
            {
                j = dhParams.getJ().getValue();
            }

            DHValidationParameters validation = null;
            DHValidationParms dhValidationParms = dhParams.getValidationParms();
            if (dhValidationParms != null)
            {
                byte[] seed = dhValidationParms.getSeed().getBytes();
                BigInteger pgenCounter = dhValidationParms.getPgenCounter().getValue();

                // TODO Check pgenCounter size?

                validation = new DHValidationParameters(seed, pgenCounter.intValue());
            }

            return new DHPublicKeyParameters(y, new DHParameters(p, g, q, j, validation));
        }
        else if (algId.getAlgorithm().equals(PKCSObjectIdentifiers.dhKeyAgreement))
        {
            DHParameter params = DHParameter.getInstance(algId.getParameters());
            ASN1Integer derY = (ASN1Integer)keyInfo.parsePublicKey();

            BigInteger lVal = params.getL();
            int l = lVal == null ? 0 : lVal.intValue();
            DHParameters dhParams = new DHParameters(params.getP(), params.getG(), null, l);

            return new DHPublicKeyParameters(derY.getValue(), dhParams);
        }
        else if (algId.getAlgorithm().equals(OIWObjectIdentifiers.elGamalAlgorithm))
        {
            ElGamalParameter params = new ElGamalParameter((ASN1Sequence)algId.getParameters());
            ASN1Integer derY = (ASN1Integer)keyInfo.parsePublicKey();

            return new ElGamalPublicKeyParameters(derY.getValue(), new ElGamalParameters(
                params.getP(), params.getG()));
        }
        else if (algId.getAlgorithm().equals(X9ObjectIdentifiers.id_dsa)
            || algId.getAlgorithm().equals(OIWObjectIdentifiers.dsaWithSHA1))
        {
            ASN1Integer derY = (ASN1Integer)keyInfo.parsePublicKey();
            ASN1Encodable de = algId.getParameters();

            DSAParameters parameters = null;
            if (de != null)
            {
                DSAParameter params = DSAParameter.getInstance(de.toASN1Primitive());
                parameters = new DSAParameters(params.getP(), params.getQ(), params.getG());
            }

            return new DSAPublicKeyParameters(derY.getValue(), parameters);
        }
        else if (algId.getAlgorithm().equals(X9ObjectIdentifiers.id_ecPublicKey))
        {
            X962Parameters params = new X962Parameters(
                (ASN1Primitive)algId.getParameters());

            X9ECParameters x9;
            if (params.isNamedCurve())
            {
                ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier)params.getParameters();
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        X509Certificate issuerCert,
        BigInteger      number,
        String          provider)
        throws OCSPException
    {
        AlgorithmIdentifier hashAlg = new AlgorithmIdentifier(
            new DERObjectIdentifier(hashAlgorithm), DERNull.INSTANCE);

        this.id = createCertID(hashAlg, issuerCert, new ASN1Integer(number), provider);
    }
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        catch (Exception e)
        {
            throw new OCSPException("exception processing TBSRequest: " + e, e);
        }

        AlgorithmIdentifier sigAlgId = OCSPUtil.getSigAlgID(signingAlgorithm);

        DERSequence chainSeq = null;
        if (chain != null && chain.length > 0)
        {
            ASN1EncodableVector v = new ASN1EncodableVector();
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    static AlgorithmIdentifier getSigAlgID(
        DERObjectIdentifier sigOid)
    {
        if (noParams.contains(sigOid))
        {
            return new AlgorithmIdentifier(sigOid);
        }
        else
        {
            return new AlgorithmIdentifier(sigOid, DERNull.INSTANCE);
        }
    }
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        {
            int itCount = mData.getIterationCount().intValue();
            byte[] data = ASN1OctetString.getInstance(info.getContent()).getOctets();
            byte[] res = calculatePbeMac(mData.getMac().getAlgorithmId().getObjectId(), mData.getSalt(), itCount, passwd, data, provider);

            AlgorithmIdentifier algId = new AlgorithmIdentifier(mData.getMac().getAlgorithmId().getObjectId(), DERNull.INSTANCE);
            DigestInfo dInfo = new DigestInfo(algId, res);

            mData = new MacData(dInfo, mData.getSalt(), itCount);
        }
        catch (Exception e)
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                    return key;   // already explicit
                }

                params = new X962Parameters(curveParams);

                info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params), info.getPublicKeyData().getBytes());

                KeyFactory keyFact = KeyFactory.getInstance(key.getAlgorithm(), provider);

                return keyFact.generatePublic(new X509EncodedKeySpec(info.getEncoded()));
            }
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                    return key;   // already explicit
                }

                params = new X962Parameters(curveParams);

                info = new PrivateKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params), info.parsePrivateKey());

                KeyFactory keyFact = KeyFactory.getInstance(key.getAlgorithm(), provider);

                return keyFact.generatePrivate(new PKCS8EncodedKeySpec(info.getEncoded()));
            }
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            catch (Exception e)
            {
                throw new OCSPException("exception processing TBSRequest: " + e, e);
            }

            AlgorithmIdentifier sigAlgId = new AlgorithmIdentifier(signingAlgorithm, DERNull.INSTANCE);

            if (chain != null && chain.length > 0)
            {
                ASN1EncodableVector v = new ASN1EncodableVector();
                try
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    {
        if (privateKey instanceof RSAKeyParameters)
        {
            RSAPrivateCrtKeyParameters priv = (RSAPrivateCrtKeyParameters)privateKey;

            return new PrivateKeyInfo(new AlgorithmIdentifier(PKCSObjectIdentifiers.rsaEncryption, DERNull.INSTANCE), new RSAPrivateKey(priv.getModulus(), priv.getPublicExponent(), priv.getExponent(), priv.getP(), priv.getQ(), priv.getDP(), priv.getDQ(), priv.getQInv()));
        }
        else if (privateKey instanceof DSAPrivateKeyParameters)
        {
            DSAPrivateKeyParameters priv = (DSAPrivateKeyParameters)privateKey;
            DSAParameters params = priv.getParameters();

            return new PrivateKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_dsa, new DSAParameter(params.getP(), params.getQ(), params.getG())), new ASN1Integer(priv.getX()));
        }
        else
        {
            throw new IOException("key parameters not recognised.");
        }
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