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    • org.bouncycastle.crypto.tls.DefaultTlsServer Maven / Gradle / Ivy

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    The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.4.

    There is a newer version: 1.79
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    package org.bouncycastle.crypto.tls;

import java.io.IOException;

import org.bouncycastle.crypto.agreement.DHStandardGroups;
import org.bouncycastle.crypto.params.DHParameters;

public abstract class DefaultTlsServer
    extends AbstractTlsServer
{

    public DefaultTlsServer()
    {
        super();
    }

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

    protected TlsEncryptionCredentials getRSAEncryptionCredentials()
        throws IOException
    {
        throw new TlsFatalAlert(AlertDescription.internal_error);
    }

    protected TlsSignerCredentials getRSASignerCredentials()
        throws IOException
    {
        throw new TlsFatalAlert(AlertDescription.internal_error);
    }

    protected DHParameters getDHParameters()
    {
        return DHStandardGroups.rfc5114_1024_160;
    }

    protected int[] getCipherSuites()
    {
        return new int[]{CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
            CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
            CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA, CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA,
            CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_RSA_WITH_3DES_EDE_CBC_SHA,};
    }

    public TlsCredentials getCredentials()
        throws IOException
    {

        switch (selectedCipherSuite)
        {
        case CipherSuite.TLS_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_RSA_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_NULL_MD5:
        case CipherSuite.TLS_RSA_WITH_NULL_SHA:
        case CipherSuite.TLS_RSA_WITH_NULL_SHA256:
        case CipherSuite.TLS_RSA_WITH_RC4_128_MD5:
        case CipherSuite.TLS_RSA_WITH_RC4_128_SHA:
        case CipherSuite.TLS_RSA_WITH_SEED_CBC_SHA:
            return getRSAEncryptionCredentials();

        case CipherSuite.TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_SEED_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384:
            return getRSASignerCredentials();

        default:
            /*
             * Note: internal error here; selected a key exchange we don't implement!
             */
            throw new TlsFatalAlert(AlertDescription.internal_error);
        }
    }

    public TlsKeyExchange getKeyExchange()
        throws IOException
    {

        switch (selectedCipherSuite)
        {
        case CipherSuite.TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_DH_DSS_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_DH_DSS_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_DH_DSS_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_DH_DSS_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_DH_DSS_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_DH_DSS_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_DH_DSS_WITH_SEED_CBC_SHA:
            return createDHKeyExchange(KeyExchangeAlgorithm.DH_DSS);

        case CipherSuite.TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_DH_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_DH_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_DH_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_SEED_CBC_SHA:
            return createDHKeyExchange(KeyExchangeAlgorithm.DH_RSA);

        case CipherSuite.TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_SEED_CBC_SHA:
            return createDHEKeyExchange(KeyExchangeAlgorithm.DHE_DSS);

        case CipherSuite.TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_SEED_CBC_SHA:
            return createDHEKeyExchange(KeyExchangeAlgorithm.DHE_RSA);

        case CipherSuite.TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_NULL_SHA:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_RC4_128_SHA:
            return createECDHKeyExchange(KeyExchangeAlgorithm.ECDH_ECDSA);

        case CipherSuite.TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_ECDH_RSA_WITH_NULL_SHA:
        case CipherSuite.TLS_ECDH_RSA_WITH_RC4_128_SHA:
            return createECDHKeyExchange(KeyExchangeAlgorithm.ECDH_RSA);

        case CipherSuite.TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_NULL_SHA:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA:
            return createECDHEKeyExchange(KeyExchangeAlgorithm.ECDHE_ECDSA);

        case CipherSuite.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_ECDHE_RSA_WITH_NULL_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_RC4_128_SHA:
            return createECDHEKeyExchange(KeyExchangeAlgorithm.ECDHE_RSA);

        case CipherSuite.TLS_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_RSA_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_NULL_MD5:
        case CipherSuite.TLS_RSA_WITH_NULL_SHA:
        case CipherSuite.TLS_RSA_WITH_NULL_SHA256:
        case CipherSuite.TLS_RSA_WITH_RC4_128_MD5:
        case CipherSuite.TLS_RSA_WITH_RC4_128_SHA:
        case CipherSuite.TLS_RSA_WITH_SEED_CBC_SHA:
            return createRSAKeyExchange();

        default:
            /*
             * Note: internal error here; selected a key exchange we don't implement!
             */
            throw new TlsFatalAlert(AlertDescription.internal_error);
        }
    }

    public TlsCipher getCipher()
        throws IOException
    {

        switch (selectedCipherSuite)
        {
        case CipherSuite.TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_3DES_EDE_CBC_SHA:
            return cipherFactory.createCipher(context, EncryptionAlgorithm._3DES_EDE_CBC, MACAlgorithm.hmac_sha1);

        case CipherSuite.TLS_DH_DSS_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.AES_128_CBC, MACAlgorithm.hmac_sha1);

        case CipherSuite.TLS_DH_DSS_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_DH_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256:
        case CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA256:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.AES_128_CBC, MACAlgorithm.hmac_sha256);

        case CipherSuite.TLS_DH_DSS_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_DH_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:
        case CipherSuite.TLS_RSA_WITH_AES_128_GCM_SHA256:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.AES_128_GCM, MACAlgorithm._null);

        case CipherSuite.TLS_DH_DSS_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.AES_256_CBC, MACAlgorithm.hmac_sha1);

        case CipherSuite.TLS_DH_DSS_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_DH_RSA_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA256:
        case CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA256:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.AES_256_CBC, MACAlgorithm.hmac_sha256);

        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.AES_256_CBC, MACAlgorithm.hmac_sha384);

        case CipherSuite.TLS_DH_DSS_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_DH_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_DHE_DSS_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_DHE_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384:
        case CipherSuite.TLS_RSA_WITH_AES_256_GCM_SHA384:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.AES_256_GCM, MACAlgorithm._null);

        case CipherSuite.TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_CAMELLIA_128_CBC_SHA:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.CAMELLIA_128_CBC, MACAlgorithm.hmac_sha1);

        case CipherSuite.TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_CAMELLIA_256_CBC_SHA:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.CAMELLIA_256_CBC, MACAlgorithm.hmac_sha1);

        case CipherSuite.TLS_RSA_WITH_NULL_MD5:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.NULL, MACAlgorithm.hmac_md5);

        case CipherSuite.TLS_ECDH_ECDSA_WITH_NULL_SHA:
        case CipherSuite.TLS_ECDH_RSA_WITH_NULL_SHA:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_NULL_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_NULL_SHA:
        case CipherSuite.TLS_RSA_WITH_NULL_SHA:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.NULL, MACAlgorithm.hmac_sha1);

        case CipherSuite.TLS_RSA_WITH_NULL_SHA256:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.NULL, MACAlgorithm.hmac_sha256);

        case CipherSuite.TLS_RSA_WITH_RC4_128_MD5:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.RC4_128, MACAlgorithm.hmac_md5);

        case CipherSuite.TLS_ECDH_ECDSA_WITH_RC4_128_SHA:
        case CipherSuite.TLS_ECDH_RSA_WITH_RC4_128_SHA:
        case CipherSuite.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA:
        case CipherSuite.TLS_ECDHE_RSA_WITH_RC4_128_SHA:
        case CipherSuite.TLS_RSA_WITH_RC4_128_SHA:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.RC4_128, MACAlgorithm.hmac_sha1);

        case CipherSuite.TLS_DH_DSS_WITH_SEED_CBC_SHA:
        case CipherSuite.TLS_DH_RSA_WITH_SEED_CBC_SHA:
        case CipherSuite.TLS_DHE_DSS_WITH_SEED_CBC_SHA:
        case CipherSuite.TLS_DHE_RSA_WITH_SEED_CBC_SHA:
        case CipherSuite.TLS_RSA_WITH_SEED_CBC_SHA:
            return cipherFactory.createCipher(context, EncryptionAlgorithm.SEED_CBC, MACAlgorithm.hmac_sha1);

        default:
            /*
             * Note: internal error here; selected a cipher suite we don't implement!
             */
            throw new TlsFatalAlert(AlertDescription.internal_error);
        }
    }

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

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

    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);
    }
}




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