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The Bouncy Castle Java APIs for the TLS, including a JSSE provider. The APIs are designed primarily to be used in conjunction with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.

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package org.bouncycastle.tls;

import java.io.IOException;
import java.util.Hashtable;
import java.util.Vector;

import org.bouncycastle.tls.crypto.TlsDHConfig;
import org.bouncycastle.tls.crypto.TlsECConfig;

/**
 * Interface describing a TLS server endpoint.
 */
public interface TlsServer
    extends TlsPeer
{
    void init(TlsServerContext context);

    /**
     * Return the specified session, if available. Note that the peer's certificate
     * chain for the session (if any) may need to be periodically revalidated.
     * 
     * @param sessionID the ID of the session to resume.
     * @return A {@link TlsSession} with the specified session ID, or null.
     * @see SessionParameters#getPeerCertificate()
     */
    TlsSession getSessionToResume(byte[] sessionID);

    void notifyClientVersion(ProtocolVersion clientVersion) throws IOException;

    void notifyFallback(boolean isFallback) throws IOException;

    void notifyOfferedCipherSuites(int[] offeredCipherSuites)
        throws IOException;

    // Hashtable is (Integer -> byte[])
    void processClientExtensions(Hashtable clientExtensions)
        throws IOException;

    ProtocolVersion getServerVersion()
        throws IOException;

    int getSelectedCipherSuite()
        throws IOException;

    // Hashtable is (Integer -> byte[])
    Hashtable getServerExtensions()
        throws IOException;

    // Vector is (SupplementalDataEntry)
    Vector getServerSupplementalData()
        throws IOException;

    /**
     * Return server credentials to use. The returned value may be null, or else it MUST implement
     * exactly one of {@link TlsCredentialedAgreement}, {@link TlsCredentialedDecryptor}, or
     * {@link TlsCredentialedSigner}, depending on the key exchange that was negotiated.
     *
     * @return a TlsCredentials object or null for anonymous key exchanges
     * @throws IOException
     */
    TlsCredentials getCredentials()
        throws IOException;

    /**
     * This method will be called (only) if the server included an extension of type
     * "status_request" with empty "extension_data" in the extended server hello. See RFC 3546
     * 3.6. Certificate Status Request. If a non-null {@link CertificateStatus} is returned, it
     * is sent to the client as a handshake message of type "certificate_status".
     * 
     * @return A {@link CertificateStatus} to be sent to the client (or null for none).
     * @throws IOException
     */
    CertificateStatus getCertificateStatus()
        throws IOException;

    CertificateRequest getCertificateRequest()
        throws IOException;

    TlsPSKIdentityManager getPSKIdentityManager() throws IOException;

    TlsSRPLoginParameters getSRPLoginParameters() throws IOException;

    TlsDHConfig getDHConfig() throws IOException;

    TlsECConfig getECDHConfig() throws IOException;

    // Vector is (SupplementalDataEntry)
    void processClientSupplementalData(Vector clientSupplementalData)
        throws IOException;

    /**
     * Called by the protocol handler to report the client certificate, only if
     * {@link #getCertificateRequest()} returned non-null.
     * 
     * Note: this method is responsible for certificate verification and validation.
     * 
     * @param clientCertificate
     *            the effective client certificate (may be an empty chain).
     * @throws IOException
     */
    void notifyClientCertificate(Certificate clientCertificate)
        throws IOException;

    /**
     * RFC 5077 3.3. NewSessionTicket Handshake Message.
     * 
     * This method will be called (only) if a NewSessionTicket extension was sent by the server. See
     * RFC 5077 4. Recommended Ticket Construction for recommended format and protection.
     *
     * @return The ticket.
     * @throws IOException
     */
    NewSessionTicket getNewSessionTicket()
        throws IOException;
}