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This is a drop in replacement for the auth0 java-jwt library (see https://github.com/auth0/java-jwt). This jar makes sure there are no external dependencies (e.g. fasterXml, Apacha Commons) needed. This is useful when deploying to an application server (e.g. tomcat with Alfreso or Pega).

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package org.bouncycastle.crypto.tls;

import java.io.IOException;

public abstract class DefaultTlsClient
    extends AbstractTlsClient
{
    public DefaultTlsClient()
    {
        super();
    }

    public DefaultTlsClient(TlsCipherFactory cipherFactory)
    {
        super(cipherFactory);
    }

    public int[] getCipherSuites()
    {
        return new int[]
        {
            CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
            CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
            CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
            CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
            CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_DHE_DSS_WITH_AES_128_GCM_SHA256,
            CipherSuite.TLS_DHE_DSS_WITH_AES_128_CBC_SHA256,
            CipherSuite.TLS_DHE_DSS_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
            CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
            CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_RSA_WITH_AES_128_GCM_SHA256,
            CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA256,
            CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA,
        };
    }

    public TlsKeyExchange getKeyExchange()
        throws IOException
    {
        int keyExchangeAlgorithm = TlsUtils.getKeyExchangeAlgorithm(selectedCipherSuite);

        switch (keyExchangeAlgorithm)
        {
        case KeyExchangeAlgorithm.DH_DSS:
        case KeyExchangeAlgorithm.DH_RSA:
            return createDHKeyExchange(keyExchangeAlgorithm);

        case KeyExchangeAlgorithm.DHE_DSS:
        case KeyExchangeAlgorithm.DHE_RSA:
            return createDHEKeyExchange(keyExchangeAlgorithm);

        case KeyExchangeAlgorithm.ECDH_anon:
        case KeyExchangeAlgorithm.ECDH_ECDSA:
        case KeyExchangeAlgorithm.ECDH_RSA:
            return createECDHKeyExchange(keyExchangeAlgorithm);

        case KeyExchangeAlgorithm.ECDHE_ECDSA:
        case KeyExchangeAlgorithm.ECDHE_RSA:
            return createECDHEKeyExchange(keyExchangeAlgorithm);

        case KeyExchangeAlgorithm.RSA:
            return createRSAKeyExchange();

        default:
            /*
             * Note: internal error here; the TlsProtocol implementation verifies that the
             * server-selected cipher suite was in the list of client-offered cipher suites, so if
             * we now can't produce an implementation, we shouldn't have offered it!
             */
            throw new TlsFatalAlert(AlertDescription.internal_error);
        }
    }

    protected TlsKeyExchange createDHKeyExchange(int keyExchange)
    {
        return new TlsDHKeyExchange(keyExchange, supportedSignatureAlgorithms, null);
    }

    protected TlsKeyExchange createDHEKeyExchange(int keyExchange)
    {
        return new TlsDHEKeyExchange(keyExchange, supportedSignatureAlgorithms, null);
    }

    protected TlsKeyExchange createECDHKeyExchange(int keyExchange)
    {
        return new TlsECDHKeyExchange(keyExchange, supportedSignatureAlgorithms, namedCurves, clientECPointFormats,
            serverECPointFormats);
    }

    protected TlsKeyExchange createECDHEKeyExchange(int keyExchange)
    {
        return new TlsECDHEKeyExchange(keyExchange, supportedSignatureAlgorithms, namedCurves, clientECPointFormats,
            serverECPointFormats);
    }

    protected TlsKeyExchange createRSAKeyExchange()
    {
        return new TlsRSAKeyExchange(supportedSignatureAlgorithms);
    }
}