Examples of java.security.spec.DSAPublicKeySpec

java.security.spec.DSAPublicKeySpec
This class specifies a DSA public key with its associated parameters. @author Jan Luehe @version 1.19, 11/17/05 @see java.security.Key @see java.security.KeyFactory @see KeySpec @see DSAPrivateKeySpec @see X509EncodedKeySpec @since 1.2


                DSAPublicKey publicKey = (DSAPublicKey) key;
                DSAParams params = publicKey.getParams();


                try {
                    return engineGeneratePublic(new DSAPublicKeySpec(publicKey
                            .getY(), params.getP(), params.getQ(), params
                            .getG()));
                } catch (InvalidKeySpecException e) {
                    // Actually this exception shouldn't be thrown
                    throw new InvalidKeyException(Messages.getString(

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            DERInteger              x = (DERInteger)seq.getObjectAt(5);


            privSpec = new DSAPrivateKeySpec(
                        x.getValue(), p.getValue(),
                            q.getValue(), g.getValue());
            pubSpec = new DSAPublicKeySpec(
                        y.getValue(), p.getValue(),
                            q.getValue(), g.getValue());
        }


        KeyFactory          fact = KeyFactory.getInstance(type, provider);

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     *
     * @throws InvalidSshKeyException
     */
    public SshDssPublicKey(byte[] key) throws InvalidSshKeyException {
        try {
            DSAPublicKeySpec dsaKey;


            // Extract the key information
            ByteArrayReader bar = new ByteArrayReader(key);
            String header = bar.readString();


            if (!header.equals(getAlgorithmName())) {
                throw new InvalidSshKeyException();
            }


            BigInteger p = bar.readBigInteger();
            BigInteger q = bar.readBigInteger();
            BigInteger g = bar.readBigInteger();
            BigInteger y = bar.readBigInteger();
            dsaKey = new DSAPublicKeySpec(y, p, q, g);


            KeyFactory kf = KeyFactory.getInstance("DSA");
            pubkey = (DSAPublicKey) kf.generatePublic(dsaKey);
        } catch (Exception e) {
            throw new InvalidSshKeyException();

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     *
     * @return
     */
    public SshPublicKey getPublicKey() {
        try {
            DSAPublicKeySpec spec = new DSAPublicKeySpec(getY(),
                    prvkey.getParams().getP(), prvkey.getParams().getQ(),
                    prvkey.getParams().getG());
            KeyFactory kf = KeyFactory.getInstance("DSA");


            return new SshDssPublicKey((DSAPublicKey) kf.generatePublic(spec));

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    }


    /** @inheritDoc */
    public PublicKey getPublicKey() throws XMLSecurityException {
        try {
            DSAPublicKeySpec pkspec =
                new DSAPublicKeySpec(
                    this.getBigIntegerFromChildElement(
                        Constants._TAG_Y, Constants.SignatureSpecNS
                    ),
                    this.getBigIntegerFromChildElement(
                        Constants._TAG_P, Constants.SignatureSpecNS

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                    if (pos != rawKey.length) {
                        throw new IOException("Authorized keys file line " + reader.getLineNumber() + " contains a DSA key with extra garbage.");
                    }


                    DSAPublicKeySpec ps = new DSAPublicKeySpec(y, p, q, g);
                    pk = dsaKeyGen.generatePublic(ps);
                } else if (tokens[0].equals("ssh-rsa")) {
                    int pos = 11;


                    int n = getInt(rawKey, pos);

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            //if (curElem != null && curElem.getLocalName().equals("J")) {
                //j = new DOMCryptoBinary(curElem.getFirstChild());
                // curElem = DOMUtils.getNextSiblingElement(curElem);
            //}
            //@@@ do we care about j, pgenCounter or seed?
            DSAPublicKeySpec spec = new DSAPublicKeySpec(y, p, q, g);
            return (DSAPublicKey) generatePublicKey(dsakf, spec);
        }

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            DERInteger              x = (DERInteger)seq.getObjectAt(5);


            privSpec = new DSAPrivateKeySpec(
                        x.getValue(), p.getValue(),
                            q.getValue(), g.getValue());
            pubSpec = new DSAPublicKeySpec(
                        y.getValue(), p.getValue(),
                            q.getValue(), g.getValue());
        }


        KeyFactory          fact = KeyFactory.getInstance(type, provider);

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                fact = KeyFactory.getInstance("RSA", provider);
                
                return fact.generatePublic(rsaSpec);
            case DSA:
                DSAPublicBCPGKey    dsaK = (DSAPublicBCPGKey)publicPk.getKey();
                DSAPublicKeySpec    dsaSpec = new DSAPublicKeySpec(dsaK.getY(), dsaK.getP(), dsaK.getQ(), dsaK.getG());
            
                fact = KeyFactory.getInstance("DSA", provider);
                
                return fact.generatePublic(dsaSpec);
            case ELGAMAL_ENCRYPT:

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            if (prevDSAPubKey.getParams() == null)
            {
                continue;
            }
            DSAParams dsaParams = prevDSAPubKey.getParams();
            DSAPublicKeySpec dsaPubKeySpec = new DSAPublicKeySpec(
                dsaPubKey.getY(), dsaParams.getP(), dsaParams.getQ(), dsaParams.getG());
            try
            {
                KeyFactory keyFactory = KeyFactory.getInstance("DSA", "BC");
                return keyFactory.generatePublic(dsaPubKeySpec);

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