Examples of java.security.PublicKey

java.security.PublicKey

A public key. This interface contains no methods or constants. It merely serves to group (and provide type safety for) all public key interfaces. Note: The specialized public key interfaces extend this interface. See, for example, the DSAPublicKey interface in java.security.interfaces. @see Key @see PrivateKey @see Certificate @see Signature#initVerify @see java.security.interfaces.DSAPublicKey @see java.security.interfaces.RSAPublicKey @version 1.33 05/11/17

                    privateKey = samlEntityBean.get().getSigningKey().getPrivateKey();
                }
                sendSamlRedirect(base64EncodedResponse, signMessage, samlRequestOrResponse, privateKey, endpoint, response);
            } else {
                if (signMessage) {
                    PublicKey publicKey = samlEntityBean.get().getSigningKey().getCertificate().getPublicKey();
                    PrivateKey privateKey = samlEntityBean.get().getSigningKey().getPrivateKey();
                    signatureUtilForPostBinding.sign(message, new KeyPair(publicKey, privateKey));
                }
                byte[] messageBytes = SamlUtils.getDocumentAsString(message).getBytes("UTF-8");

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        if (log.isTraceEnabled()) {
            log.tracef("Document to be signed={0}", new Object[]{SamlUtils.getDocumentAsString(doc)});
        }


        PrivateKey signingKey = keyPair.getPrivate();
        PublicKey publicKey = keyPair.getPublic();


        DOMSignContext dsc = new DOMSignContext(signingKey, doc.getDocumentElement());
        dsc.setDefaultNamespacePrefix("dsig");


        try {
            DigestMethod digestMethodObj = fac.newDigestMethod(DigestMethod.SHA1, null);
            Transform transform = fac.newTransform(Transform.ENVELOPED, (TransformParameterSpec) null);


            List<Transform> transformList = Collections.singletonList(transform);
            String referenceURI = "#" + doc.getDocumentElement().getAttribute("ID");
            Reference ref = fac.newReference(referenceURI, digestMethodObj, transformList, null, null);


            String canonicalizationMethodType = CanonicalizationMethod.EXCLUSIVE_WITH_COMMENTS;
            CanonicalizationMethod canonicalizationMethod = fac.newCanonicalizationMethod(canonicalizationMethodType, (C14NMethodParameterSpec) null);


            List<Reference> referenceList = Collections.singletonList(ref);


            String signatureMethodString = publicKey.getAlgorithm().equalsIgnoreCase("RSA") ? SignatureMethod.RSA_SHA1 : SignatureMethod.DSA_SHA1;
            SignatureMethod signatureMethod = fac.newSignatureMethod(signatureMethodString, null);
            SignedInfo si = fac.newSignedInfo(canonicalizationMethod, signatureMethod, referenceList);


            KeyInfoFactory kif = fac.getKeyInfoFactory();
            KeyValue kv = kif.newKeyValue(publicKey);

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        // Get private and public key
        InputStream keyStoreStream = getClass().getClassLoader().getResourceAsStream("test_keystore.jks");
        KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
        keyStore.load(keyStoreStream, "store456".toCharArray());
        X509Certificate certificate = (X509Certificate) keyStore.getCertificate("servercert");
        PublicKey publicKey = certificate.getPublicKey();
        PrivateKey privateKey = (PrivateKey) keyStore.getKey("servercert", "pass456".toCharArray());
        keyPair = new KeyPair(publicKey, privateKey);
    }

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     * DH is also useful as a coin-toss algorithm. Two parties get the same random number without trusting
     * each other.
     */
    public KeyAgreement diffieHellman(boolean side) throws IOException, GeneralSecurityException {
        KeyPair keyPair;
        PublicKey otherHalf;


        if (side) {
            AlgorithmParameterGenerator paramGen = AlgorithmParameterGenerator.getInstance("DH");
            paramGen.init(512);

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     * Verifies that we are talking to a peer that actually owns the private key corresponding to the public key we get.
     */
    public PublicKey verifyIdentity(byte[] sharedSecret) throws IOException, GeneralSecurityException {
        try {
            String serverKeyAlgorithm = readUTF();
            PublicKey spk = KeyFactory.getInstance(serverKeyAlgorithm).generatePublic(readKey());


            // verify the identity of the server
            Signature sig = Signature.getInstance("SHA1with"+serverKeyAlgorithm);
            sig.initVerify(spk);
            sig.update(spk.getEncoded());
            sig.update(sharedSecret);
            sig.verify((byte[]) readObject());


            return spk;
        } catch (ClassNotFoundException e) {

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        entryPoint.authenticate("ssh",c2s, s2c);
        Connection c = new Connection(s2c.getIn(), c2s.getOut());


        try {
            byte[] sharedSecret = c.diffieHellman(false).generateSecret();
            PublicKey serverIdentity = c.verifyIdentity(sharedSecret);


            // try all the public keys
            for (KeyPair key : privateKeys) {
                c.proveIdentity(sharedSecret,key);
                if (c.readBoolean())

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        if (key instanceof PublicKey) {
            return key;
        } else {
            java.security.cert.Certificate cert = keystore.getCertificate(alias);
            // Get public key
            PublicKey publicKey = cert.getPublicKey();
            return publicKey;
        }
    }

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    this.port = port;
  }


  @Override
  public void afterPropertiesSet() throws Exception {
    final PublicKey allowedKey = decodePublicKey();
    this.server.setPublickeyAuthenticator(new PublickeyAuthenticator() {


      @Override
      public boolean authenticate(String username, PublicKey key, ServerSession session) {
        return key.equals(allowedKey);

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            List list = keyInfo.getContent();


            for (int i = 0; i < list.size(); i++) {
                XMLStructure xmlStructure = (XMLStructure) list.get(i);
                if (xmlStructure instanceof KeyValue) {
                    PublicKey pk = null;
                    try {
                        pk = ((KeyValue) xmlStructure).getPublicKey();
                    } catch (KeyException ke) {
                        throw new KeySelectorException(ke);
                    }
                    // make sure algorithm is compatible with method
                    if (algEquals(sm.getAlgorithm(), pk.getAlgorithm())) {
                        return new SimpleKeySelectorResult(pk);
                    }
                }
            }
            throw new KeySelectorException("No KeyValue element found!");

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            List list = keyInfo.getContent();


            for (int i = 0; i < list.size(); i++) {
                XMLStructure xmlStructure = (XMLStructure) list.get(i);
                if (xmlStructure instanceof KeyValue) {
                    PublicKey pk = null;
                    try {
                        pk = ((KeyValue) xmlStructure).getPublicKey();
                    } catch (KeyException ke) {
                        throw new KeySelectorException(ke);
                    }
                    // make sure algorithm is compatible with method
                    if (algEquals(sm.getAlgorithm(), pk.getAlgorithm())) {
                        return new SimpleKeySelectorResult(pk);
                    }
                }
            }
            throw new KeySelectorException("No KeyValue element found!");

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