2082 lines
77 KiB
Java
2082 lines
77 KiB
Java
/*
|
|
* Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation. Oracle designates this
|
|
* particular file as subject to the "Classpath" exception as provided
|
|
* by Oracle in the LICENSE file that accompanied this code.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
package javax.net.ssl;
|
|
|
|
import java.nio.ByteBuffer;
|
|
import java.nio.ReadOnlyBufferException;
|
|
import java.util.List;
|
|
import java.util.function.BiFunction;
|
|
|
|
|
|
/**
|
|
* A class which enables secure communications using protocols such as
|
|
* the Secure Sockets Layer (SSL) or
|
|
* <A HREF="http://www.ietf.org/rfc/rfc2246.txt"> IETF RFC 2246 "Transport
|
|
* Layer Security" (TLS) </A> protocols, but is transport independent.
|
|
* <P>
|
|
* The secure communications modes include: <UL>
|
|
*
|
|
* <LI> <em>Integrity Protection</em>. SSL/TLS protects against
|
|
* modification of messages by an active wiretapper.
|
|
*
|
|
* <LI> <em>Authentication</em>. In most modes, SSL/TLS provides
|
|
* peer authentication. Servers are usually authenticated, and
|
|
* clients may be authenticated as requested by servers.
|
|
*
|
|
* <LI> <em>Confidentiality (Privacy Protection)</em>. In most
|
|
* modes, SSL/TLS encrypts data being sent between client and
|
|
* server. This protects the confidentiality of data, so that
|
|
* passive wiretappers won't see sensitive data such as financial
|
|
* information or personal information of many kinds.
|
|
*
|
|
* </UL>
|
|
*
|
|
* These kinds of protection are specified by a "cipher suite", which
|
|
* is a combination of cryptographic algorithms used by a given SSL
|
|
* connection. During the negotiation process, the two endpoints must
|
|
* agree on a cipher suite that is available in both environments. If
|
|
* there is no such suite in common, no SSL connection can be
|
|
* established, and no data can be exchanged.
|
|
* <P>
|
|
* The cipher suite used is established by a negotiation process called
|
|
* "handshaking". The goal of this process is to create or rejoin a
|
|
* "session", which may protect many connections over time. After
|
|
* handshaking has completed, you can access session attributes by
|
|
* using the {@link #getSession()} method.
|
|
* <P>
|
|
* The <code>SSLSocket</code> class provides much of the same security
|
|
* functionality, but all of the inbound and outbound data is
|
|
* automatically transported using the underlying {@link
|
|
* java.net.Socket Socket}, which by design uses a blocking model.
|
|
* While this is appropriate for many applications, this model does not
|
|
* provide the scalability required by large servers.
|
|
* <P>
|
|
* The primary distinction of an <code>SSLEngine</code> is that it
|
|
* operates on inbound and outbound byte streams, independent of the
|
|
* transport mechanism. It is the responsibility of the
|
|
* <code>SSLEngine</code> user to arrange for reliable I/O transport to
|
|
* the peer. By separating the SSL/TLS abstraction from the I/O
|
|
* transport mechanism, the <code>SSLEngine</code> can be used for a
|
|
* wide variety of I/O types, such as {@link
|
|
* java.nio.channels.spi.AbstractSelectableChannel#configureBlocking(boolean)
|
|
* non-blocking I/O (polling)}, {@link java.nio.channels.Selector
|
|
* selectable non-blocking I/O}, {@link java.net.Socket Socket} and the
|
|
* traditional Input/OutputStreams, local {@link java.nio.ByteBuffer
|
|
* ByteBuffers} or byte arrays, <A
|
|
* HREF="http://www.jcp.org/en/jsr/detail?id=203"> future asynchronous
|
|
* I/O models </A>, and so on.
|
|
* <P>
|
|
* At a high level, the <code>SSLEngine</code> appears thus:
|
|
*
|
|
* <pre>
|
|
* app data
|
|
*
|
|
* | ^
|
|
* | | |
|
|
* v | |
|
|
* +----+-----|-----+----+
|
|
* | | |
|
|
* | SSL|Engine |
|
|
* wrap() | | | unwrap()
|
|
* | OUTBOUND | INBOUND |
|
|
* | | |
|
|
* +----+-----|-----+----+
|
|
* | | ^
|
|
* | | |
|
|
* v |
|
|
*
|
|
* net data
|
|
* </pre>
|
|
* Application data (also known as plaintext or cleartext) is data which
|
|
* is produced or consumed by an application. Its counterpart is
|
|
* network data, which consists of either handshaking and/or ciphertext
|
|
* (encrypted) data, and destined to be transported via an I/O
|
|
* mechanism. Inbound data is data which has been received from the
|
|
* peer, and outbound data is destined for the peer.
|
|
* <P>
|
|
* (In the context of an <code>SSLEngine</code>, the term "handshake
|
|
* data" is taken to mean any data exchanged to establish and control a
|
|
* secure connection. Handshake data includes the SSL/TLS messages
|
|
* "alert", "change_cipher_spec," and "handshake.")
|
|
* <P>
|
|
* There are five distinct phases to an <code>SSLEngine</code>.
|
|
*
|
|
* <OL>
|
|
* <li> Creation - The <code>SSLEngine</code> has been created and
|
|
* initialized, but has not yet been used. During this phase, an
|
|
* application may set any <code>SSLEngine</code>-specific settings
|
|
* (enabled cipher suites, whether the <code>SSLEngine</code> should
|
|
* handshake in client or server mode, and so on). Once
|
|
* handshaking has begun, though, any new settings (except
|
|
* client/server mode, see below) will be used for
|
|
* the next handshake.
|
|
*
|
|
* <li> Initial Handshake - The initial handshake is a procedure by
|
|
* which the two peers exchange communication parameters until an
|
|
* SSLSession is established. Application data can not be sent during
|
|
* this phase.
|
|
*
|
|
* <li> Application Data - Once the communication parameters have
|
|
* been established and the handshake is complete, application data
|
|
* may flow through the <code>SSLEngine</code>. Outbound
|
|
* application messages are encrypted and integrity protected,
|
|
* and inbound messages reverse the process.
|
|
*
|
|
* <li> Rehandshaking - Either side may request a renegotiation of
|
|
* the session at any time during the Application Data phase. New
|
|
* handshaking data can be intermixed among the application data.
|
|
* Before starting the rehandshake phase, the application may
|
|
* reset the SSL/TLS communication parameters such as the list of
|
|
* enabled ciphersuites and whether to use client authentication,
|
|
* but can not change between client/server modes. As before, once
|
|
* handshaking has begun, any new <code>SSLEngine</code>
|
|
* configuration settings will not be used until the next
|
|
* handshake.
|
|
*
|
|
* <li> Closure - When the connection is no longer needed, the
|
|
* application should close the <code>SSLEngine</code> and should
|
|
* send/receive any remaining messages to the peer before
|
|
* closing the underlying transport mechanism. Once an engine is
|
|
* closed, it is not reusable: a new <code>SSLEngine</code> must
|
|
* be created.
|
|
* </OL>
|
|
* An <code>SSLEngine</code> is created by calling {@link
|
|
* SSLContext#createSSLEngine()} from an initialized
|
|
* <code>SSLContext</code>. Any configuration
|
|
* parameters should be set before making the first call to
|
|
* <code>wrap()</code>, <code>unwrap()</code>, or
|
|
* <code>beginHandshake()</code>. These methods all trigger the
|
|
* initial handshake.
|
|
* <P>
|
|
* Data moves through the engine by calling {@link #wrap(ByteBuffer,
|
|
* ByteBuffer) wrap()} or {@link #unwrap(ByteBuffer, ByteBuffer)
|
|
* unwrap()} on outbound or inbound data, respectively. Depending on
|
|
* the state of the <code>SSLEngine</code>, a <code>wrap()</code> call
|
|
* may consume application data from the source buffer and may produce
|
|
* network data in the destination buffer. The outbound data
|
|
* may contain application and/or handshake data. A call to
|
|
* <code>unwrap()</code> will examine the source buffer and may
|
|
* advance the handshake if the data is handshaking information, or
|
|
* may place application data in the destination buffer if the data
|
|
* is application. The state of the underlying SSL/TLS algorithm
|
|
* will determine when data is consumed and produced.
|
|
* <P>
|
|
* Calls to <code>wrap()</code> and <code>unwrap()</code> return an
|
|
* <code>SSLEngineResult</code> which indicates the status of the
|
|
* operation, and (optionally) how to interact with the engine to make
|
|
* progress.
|
|
* <P>
|
|
* The <code>SSLEngine</code> produces/consumes complete SSL/TLS
|
|
* packets only, and does not store application data internally between
|
|
* calls to <code>wrap()/unwrap()</code>. Thus input and output
|
|
* <code>ByteBuffer</code>s must be sized appropriately to hold the
|
|
* maximum record that can be produced. Calls to {@link
|
|
* SSLSession#getPacketBufferSize()} and {@link
|
|
* SSLSession#getApplicationBufferSize()} should be used to determine
|
|
* the appropriate buffer sizes. The size of the outbound application
|
|
* data buffer generally does not matter. If buffer conditions do not
|
|
* allow for the proper consumption/production of data, the application
|
|
* must determine (via {@link SSLEngineResult}) and correct the
|
|
* problem, and then try the call again.
|
|
* <P>
|
|
* For example, <code>unwrap()</code> will return a {@link
|
|
* SSLEngineResult.Status#BUFFER_OVERFLOW} result if the engine
|
|
* determines that there is not enough destination buffer space available.
|
|
* Applications should call {@link SSLSession#getApplicationBufferSize()}
|
|
* and compare that value with the space available in the destination buffer,
|
|
* enlarging the buffer if necessary. Similarly, if <code>unwrap()</code>
|
|
* were to return a {@link SSLEngineResult.Status#BUFFER_UNDERFLOW}, the
|
|
* application should call {@link SSLSession#getPacketBufferSize()} to ensure
|
|
* that the source buffer has enough room to hold a record (enlarging if
|
|
* necessary), and then obtain more inbound data.
|
|
*
|
|
* <pre>{@code
|
|
* SSLEngineResult r = engine.unwrap(src, dst);
|
|
* switch (r.getStatus()) {
|
|
* BUFFER_OVERFLOW:
|
|
* // Could attempt to drain the dst buffer of any already obtained
|
|
* // data, but we'll just increase it to the size needed.
|
|
* int appSize = engine.getSession().getApplicationBufferSize();
|
|
* ByteBuffer b = ByteBuffer.allocate(appSize + dst.position());
|
|
* dst.flip();
|
|
* b.put(dst);
|
|
* dst = b;
|
|
* // retry the operation.
|
|
* break;
|
|
* BUFFER_UNDERFLOW:
|
|
* int netSize = engine.getSession().getPacketBufferSize();
|
|
* // Resize buffer if needed.
|
|
* if (netSize > dst.capacity()) {
|
|
* ByteBuffer b = ByteBuffer.allocate(netSize);
|
|
* src.flip();
|
|
* b.put(src);
|
|
* src = b;
|
|
* }
|
|
* // Obtain more inbound network data for src,
|
|
* // then retry the operation.
|
|
* break;
|
|
* // other cases: CLOSED, OK.
|
|
* }
|
|
* }</pre>
|
|
*
|
|
* <P>
|
|
* Unlike <code>SSLSocket</code>, all methods of SSLEngine are
|
|
* non-blocking. <code>SSLEngine</code> implementations may
|
|
* require the results of tasks that may take an extended period of
|
|
* time to complete, or may even block. For example, a TrustManager
|
|
* may need to connect to a remote certificate validation service,
|
|
* or a KeyManager might need to prompt a user to determine which
|
|
* certificate to use as part of client authentication. Additionally,
|
|
* creating cryptographic signatures and verifying them can be slow,
|
|
* seemingly blocking.
|
|
* <P>
|
|
* For any operation which may potentially block, the
|
|
* <code>SSLEngine</code> will create a {@link java.lang.Runnable}
|
|
* delegated task. When <code>SSLEngineResult</code> indicates that a
|
|
* delegated task result is needed, the application must call {@link
|
|
* #getDelegatedTask()} to obtain an outstanding delegated task and
|
|
* call its {@link java.lang.Runnable#run() run()} method (possibly using
|
|
* a different thread depending on the compute strategy). The
|
|
* application should continue obtaining delegated tasks until no more
|
|
* exist, and try the original operation again.
|
|
* <P>
|
|
* At the end of a communication session, applications should properly
|
|
* close the SSL/TLS link. The SSL/TLS protocols have closure handshake
|
|
* messages, and these messages should be communicated to the peer
|
|
* before releasing the <code>SSLEngine</code> and closing the
|
|
* underlying transport mechanism. A close can be initiated by one of:
|
|
* an SSLException, an inbound closure handshake message, or one of the
|
|
* close methods. In all cases, closure handshake messages are
|
|
* generated by the engine, and <code>wrap()</code> should be repeatedly
|
|
* called until the resulting <code>SSLEngineResult</code>'s status
|
|
* returns "CLOSED", or {@link #isOutboundDone()} returns true. All
|
|
* data obtained from the <code>wrap()</code> method should be sent to the
|
|
* peer.
|
|
* <P>
|
|
* {@link #closeOutbound()} is used to signal the engine that the
|
|
* application will not be sending any more data.
|
|
* <P>
|
|
* A peer will signal its intent to close by sending its own closure
|
|
* handshake message. After this message has been received and
|
|
* processed by the local <code>SSLEngine</code>'s <code>unwrap()</code>
|
|
* call, the application can detect the close by calling
|
|
* <code>unwrap()</code> and looking for a <code>SSLEngineResult</code>
|
|
* with status "CLOSED", or if {@link #isInboundDone()} returns true.
|
|
* If for some reason the peer closes the communication link without
|
|
* sending the proper SSL/TLS closure message, the application can
|
|
* detect the end-of-stream and can signal the engine via {@link
|
|
* #closeInbound()} that there will no more inbound messages to
|
|
* process. Some applications might choose to require orderly shutdown
|
|
* messages from a peer, in which case they can check that the closure
|
|
* was generated by a handshake message and not by an end-of-stream
|
|
* condition.
|
|
* <P>
|
|
* There are two groups of cipher suites which you will need to know
|
|
* about when managing cipher suites:
|
|
*
|
|
* <UL>
|
|
* <LI> <em>Supported</em> cipher suites: all the suites which are
|
|
* supported by the SSL implementation. This list is reported
|
|
* using {@link #getSupportedCipherSuites()}.
|
|
*
|
|
* <LI> <em>Enabled</em> cipher suites, which may be fewer than
|
|
* the full set of supported suites. This group is set using the
|
|
* {@link #setEnabledCipherSuites(String [])} method, and
|
|
* queried using the {@link #getEnabledCipherSuites()} method.
|
|
* Initially, a default set of cipher suites will be enabled on a
|
|
* new engine that represents the minimum suggested
|
|
* configuration.
|
|
* </UL>
|
|
*
|
|
* Implementation defaults require that only cipher suites which
|
|
* authenticate servers and provide confidentiality be enabled by
|
|
* default. Only if both sides explicitly agree to unauthenticated
|
|
* and/or non-private (unencrypted) communications will such a
|
|
* cipher suite be selected.
|
|
* <P>
|
|
* Each SSL/TLS connection must have one client and one server, thus
|
|
* each endpoint must decide which role to assume. This choice determines
|
|
* who begins the handshaking process as well as which type of messages
|
|
* should be sent by each party. The method {@link
|
|
* #setUseClientMode(boolean)} configures the mode. Once the initial
|
|
* handshaking has started, an <code>SSLEngine</code> can not switch
|
|
* between client and server modes, even when performing renegotiations.
|
|
* <P>
|
|
* Applications might choose to process delegated tasks in different
|
|
* threads. When an <code>SSLEngine</code>
|
|
* is created, the current {@link java.security.AccessControlContext}
|
|
* is saved. All future delegated tasks will be processed using this
|
|
* context: that is, all access control decisions will be made using the
|
|
* context captured at engine creation.
|
|
*
|
|
* <HR>
|
|
*
|
|
* <B>Concurrency Notes</B>:
|
|
* There are two concurrency issues to be aware of:
|
|
*
|
|
* <OL>
|
|
* <li>The <code>wrap()</code> and <code>unwrap()</code> methods
|
|
* may execute concurrently of each other.
|
|
*
|
|
* <li> The SSL/TLS protocols employ ordered packets.
|
|
* Applications must take care to ensure that generated packets
|
|
* are delivered in sequence. If packets arrive
|
|
* out-of-order, unexpected or fatal results may occur.
|
|
* <P>
|
|
* For example:
|
|
*
|
|
* <pre>
|
|
* synchronized (outboundLock) {
|
|
* sslEngine.wrap(src, dst);
|
|
* outboundQueue.put(dst);
|
|
* }
|
|
* </pre>
|
|
*
|
|
* As a corollary, two threads must not attempt to call the same method
|
|
* (either <code>wrap()</code> or <code>unwrap()</code>) concurrently,
|
|
* because there is no way to guarantee the eventual packet ordering.
|
|
* </OL>
|
|
*
|
|
* <h3>Default configuration for different Android versions</h3>
|
|
* <p>{@code SSLEngine} instances obtained from the default {@link SSLContext} are configured as
|
|
* follows:
|
|
*
|
|
* <style type="text/css">
|
|
* tr.deprecated {
|
|
* background-color: #ccc;
|
|
* color: #999;
|
|
* font-style: italic;
|
|
* }
|
|
* </style>
|
|
*
|
|
* <h4>Protocols</h4>
|
|
* <table>
|
|
* <thead>
|
|
* <tr>
|
|
* <th>Protocol</th>
|
|
* <th>Supported (API Levels)</th>
|
|
* <th>Enabled by default (API Levels)</th>
|
|
* </tr>
|
|
* </thead>
|
|
* <tbody>
|
|
* <tr class="deprecated">
|
|
* <td>SSLv3</td>
|
|
* <td>1–25</td>
|
|
* <td>1–22</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLSv1</td>
|
|
* <td>1+</td>
|
|
* <td>1+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLSv1.1</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLSv1.2</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLSv1.3</td>
|
|
* <td>29+</td>
|
|
* <td>29+</td>
|
|
* </tr>
|
|
* </tbody>
|
|
* </table>
|
|
*
|
|
* <h4>Cipher suites</h4>
|
|
* <table>
|
|
* <thead>
|
|
* <tr>
|
|
* <th>Cipher suite</th>
|
|
* <th>Supported (API Levels)</th>
|
|
* <th>Enabled by default (API Levels)</th>
|
|
* </tr>
|
|
* </thead>
|
|
* <tbody>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DHE_DSS_WITH_DES_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DHE_RSA_WITH_DES_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DH_anon_EXPORT_WITH_RC4_40_MD5</td>
|
|
* <td>9-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DH_anon_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DH_anon_WITH_DES_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_DH_anon_WITH_RC4_128_MD5</td>
|
|
* <td>9-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_RSA_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_RSA_EXPORT_WITH_RC4_40_MD5</td>
|
|
* <td>9-22</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>SSL_RSA_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>9+</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_RSA_WITH_DES_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_RSA_WITH_NULL_MD5</td>
|
|
* <td>9-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_RSA_WITH_NULL_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_RSA_WITH_RC4_128_MD5</td>
|
|
* <td>9-25</td>
|
|
* <td>9-19</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>SSL_RSA_WITH_RC4_128_SHA</td>
|
|
* <td>9-25</td>
|
|
* <td>9-23</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_AES_128_GCM_SHA256</td>
|
|
* <td>29+</td>
|
|
* <td>29+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_AES_256_GCM_SHA384</td>
|
|
* <td>29+</td>
|
|
* <td>29+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_CHACHA20_POLY1305_SHA256</td>
|
|
* <td>29+</td>
|
|
* <td>29+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td>1-8</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td>1-8</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_DSS_WITH_AES_128_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>9-22</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_DSS_WITH_AES_128_CBC_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_DSS_WITH_AES_128_GCM_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_DSS_WITH_AES_256_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td>20-22</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_DSS_WITH_AES_256_CBC_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_DSS_WITH_AES_256_GCM_SHA384</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_DSS_WITH_DES_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td>1-8</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td>1-8</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td>1-8</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_RSA_WITH_AES_128_CBC_SHA</td>
|
|
* <td>9-25</td>
|
|
* <td>9-25</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_RSA_WITH_AES_128_CBC_SHA256</td>
|
|
* <td>20-25</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_RSA_WITH_AES_128_GCM_SHA256</td>
|
|
* <td>20-25</td>
|
|
* <td>20-25</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_RSA_WITH_AES_256_CBC_SHA</td>
|
|
* <td>9-25</td>
|
|
* <td>20-25</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_RSA_WITH_AES_256_CBC_SHA256</td>
|
|
* <td>20-25</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_RSA_WITH_AES_256_GCM_SHA384</td>
|
|
* <td>20-25</td>
|
|
* <td>20-25</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DHE_RSA_WITH_DES_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td>1-8</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_DSS_WITH_DES_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_RSA_WITH_DES_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_anon_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_anon_WITH_AES_128_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_anon_WITH_AES_128_CBC_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_anon_WITH_AES_128_GCM_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_anon_WITH_AES_256_CBC_SHA</td>
|
|
* <td>9-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_anon_WITH_AES_256_CBC_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_anon_WITH_AES_256_GCM_SHA384</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_DH_anon_WITH_DES_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256</td>
|
|
* <td>20-28</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384</td>
|
|
* <td>20-28</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256</td>
|
|
* <td>24+</td>
|
|
* <td>24+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_ECDSA_WITH_NULL_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_ECDSA_WITH_RC4_128_SHA</td>
|
|
* <td>20-25</td>
|
|
* <td>20-23</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA</td>
|
|
* <td>21+</td>
|
|
* <td>21+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA</td>
|
|
* <td>21+</td>
|
|
* <td>21+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256</td>
|
|
* <td>24+</td>
|
|
* <td>24+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256</td>
|
|
* <td>20-28</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384</td>
|
|
* <td>20-28</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256</td>
|
|
* <td>24+</td>
|
|
* <td>24+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_RSA_WITH_NULL_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDHE_RSA_WITH_RC4_128_SHA</td>
|
|
* <td>20-25</td>
|
|
* <td>20-23</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_ECDSA_WITH_NULL_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_ECDSA_WITH_RC4_128_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_RSA_WITH_AES_128_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_RSA_WITH_AES_256_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_RSA_WITH_NULL_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_RSA_WITH_RC4_128_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_anon_WITH_AES_128_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_anon_WITH_AES_256_CBC_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_anon_WITH_NULL_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_ECDH_anon_WITH_RC4_128_SHA</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_EMPTY_RENEGOTIATION_INFO_SCSV</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_FALLBACK_SCSV</td>
|
|
* <td>21+</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_NULL_WITH_NULL_NULL</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_PSK_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>21-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_PSK_WITH_AES_128_CBC_SHA</td>
|
|
* <td>21+</td>
|
|
* <td>21+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_PSK_WITH_AES_256_CBC_SHA</td>
|
|
* <td>21+</td>
|
|
* <td>21+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_PSK_WITH_RC4_128_SHA</td>
|
|
* <td>21-25</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_RSA_EXPORT_WITH_DES40_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td>1-8</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_RSA_WITH_3DES_EDE_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td>1-8</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_RSA_WITH_AES_128_CBC_SHA</td>
|
|
* <td>9+</td>
|
|
* <td>9+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_RSA_WITH_AES_128_CBC_SHA256</td>
|
|
* <td>20-28</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_RSA_WITH_AES_128_GCM_SHA256</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_RSA_WITH_AES_256_CBC_SHA</td>
|
|
* <td>9+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_RSA_WITH_AES_256_CBC_SHA256</td>
|
|
* <td>20-28</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>TLS_RSA_WITH_AES_256_GCM_SHA384</td>
|
|
* <td>20+</td>
|
|
* <td>20+</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_RSA_WITH_DES_CBC_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td>1-8</td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_RSA_WITH_NULL_MD5</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_RSA_WITH_NULL_SHA</td>
|
|
* <td>1-8</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr class="deprecated">
|
|
* <td>TLS_RSA_WITH_NULL_SHA256</td>
|
|
* <td>20-22</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* </tbody>
|
|
* </table>
|
|
*
|
|
* <p><em>NOTE</em>: PSK cipher suites are enabled by default only if the {@code SSLContext} through
|
|
* which the engine was created has been initialized with a {@code PSKKeyManager}.
|
|
*
|
|
* @see SSLContext
|
|
* @see SSLSocket
|
|
* @see SSLServerSocket
|
|
* @see SSLSession
|
|
* @see java.net.Socket
|
|
*
|
|
* @since 1.5
|
|
* @author Brad R. Wetmore
|
|
*/
|
|
|
|
public abstract class SSLEngine {
|
|
|
|
private String peerHost = null;
|
|
private int peerPort = -1;
|
|
|
|
/**
|
|
* Constructor for an <code>SSLEngine</code> providing no hints
|
|
* for an internal session reuse strategy.
|
|
*
|
|
* @see SSLContext#createSSLEngine()
|
|
* @see SSLSessionContext
|
|
*/
|
|
protected SSLEngine() {
|
|
}
|
|
|
|
/**
|
|
* Constructor for an <code>SSLEngine</code>.
|
|
* <P>
|
|
* <code>SSLEngine</code> implementations may use the
|
|
* <code>peerHost</code> and <code>peerPort</code> parameters as hints
|
|
* for their internal session reuse strategy.
|
|
* <P>
|
|
* Some cipher suites (such as Kerberos) require remote hostname
|
|
* information. Implementations of this class should use this
|
|
* constructor to use Kerberos.
|
|
* <P>
|
|
* The parameters are not authenticated by the
|
|
* <code>SSLEngine</code>.
|
|
*
|
|
* @param peerHost the name of the peer host
|
|
* @param peerPort the port number of the peer
|
|
* @see SSLContext#createSSLEngine(String, int)
|
|
* @see SSLSessionContext
|
|
*/
|
|
protected SSLEngine(String peerHost, int peerPort) {
|
|
this.peerHost = peerHost;
|
|
this.peerPort = peerPort;
|
|
}
|
|
|
|
/**
|
|
* Returns the host name of the peer.
|
|
* <P>
|
|
* Note that the value is not authenticated, and should not be
|
|
* relied upon.
|
|
*
|
|
* @return the host name of the peer, or null if nothing is
|
|
* available.
|
|
*/
|
|
public String getPeerHost() {
|
|
return peerHost;
|
|
}
|
|
|
|
/**
|
|
* Returns the port number of the peer.
|
|
* <P>
|
|
* Note that the value is not authenticated, and should not be
|
|
* relied upon.
|
|
*
|
|
* @return the port number of the peer, or -1 if nothing is
|
|
* available.
|
|
*/
|
|
public int getPeerPort() {
|
|
return peerPort;
|
|
}
|
|
|
|
/**
|
|
* Attempts to encode a buffer of plaintext application data into
|
|
* SSL/TLS network data.
|
|
* <P>
|
|
* An invocation of this method behaves in exactly the same manner
|
|
* as the invocation:
|
|
* <blockquote><pre>
|
|
* {@link #wrap(ByteBuffer [], int, int, ByteBuffer)
|
|
* engine.wrap(new ByteBuffer [] { src }, 0, 1, dst);}
|
|
* </pre></blockquote>
|
|
*
|
|
* @param src
|
|
* a <code>ByteBuffer</code> containing outbound application data
|
|
* @param dst
|
|
* a <code>ByteBuffer</code> to hold outbound network data
|
|
* @return an <code>SSLEngineResult</code> describing the result
|
|
* of this operation.
|
|
* @throws SSLException
|
|
* A problem was encountered while processing the
|
|
* data that caused the <code>SSLEngine</code> to abort.
|
|
* See the class description for more information on
|
|
* engine closure.
|
|
* @throws ReadOnlyBufferException
|
|
* if the <code>dst</code> buffer is read-only.
|
|
* @throws IllegalArgumentException
|
|
* if either <code>src</code> or <code>dst</code>
|
|
* is null.
|
|
* @throws IllegalStateException if the client/server mode
|
|
* has not yet been set.
|
|
* @see #wrap(ByteBuffer [], int, int, ByteBuffer)
|
|
*/
|
|
public SSLEngineResult wrap(ByteBuffer src,
|
|
ByteBuffer dst) throws SSLException {
|
|
return wrap(new ByteBuffer [] { src }, 0, 1, dst);
|
|
}
|
|
|
|
/**
|
|
* Attempts to encode plaintext bytes from a sequence of data
|
|
* buffers into SSL/TLS network data.
|
|
* <P>
|
|
* An invocation of this method behaves in exactly the same manner
|
|
* as the invocation:
|
|
* <blockquote><pre>
|
|
* {@link #wrap(ByteBuffer [], int, int, ByteBuffer)
|
|
* engine.wrap(srcs, 0, srcs.length, dst);}
|
|
* </pre></blockquote>
|
|
*
|
|
* @param srcs
|
|
* an array of <code>ByteBuffers</code> containing the
|
|
* outbound application data
|
|
* @param dst
|
|
* a <code>ByteBuffer</code> to hold outbound network data
|
|
* @return an <code>SSLEngineResult</code> describing the result
|
|
* of this operation.
|
|
* @throws SSLException
|
|
* A problem was encountered while processing the
|
|
* data that caused the <code>SSLEngine</code> to abort.
|
|
* See the class description for more information on
|
|
* engine closure.
|
|
* @throws ReadOnlyBufferException
|
|
* if the <code>dst</code> buffer is read-only.
|
|
* @throws IllegalArgumentException
|
|
* if either <code>srcs</code> or <code>dst</code>
|
|
* is null, or if any element in <code>srcs</code> is null.
|
|
* @throws IllegalStateException if the client/server mode
|
|
* has not yet been set.
|
|
* @see #wrap(ByteBuffer [], int, int, ByteBuffer)
|
|
*/
|
|
public SSLEngineResult wrap(ByteBuffer [] srcs,
|
|
ByteBuffer dst) throws SSLException {
|
|
if (srcs == null) {
|
|
throw new IllegalArgumentException("src == null");
|
|
}
|
|
return wrap(srcs, 0, srcs.length, dst);
|
|
}
|
|
|
|
|
|
/**
|
|
* Attempts to encode plaintext bytes from a subsequence of data
|
|
* buffers into SSL/TLS network data. This <i>"gathering"</i>
|
|
* operation encodes, in a single invocation, a sequence of bytes
|
|
* from one or more of a given sequence of buffers. Gathering
|
|
* wraps are often useful when implementing network protocols or
|
|
* file formats that, for example, group data into segments
|
|
* consisting of one or more fixed-length headers followed by a
|
|
* variable-length body. See
|
|
* {@link java.nio.channels.GatheringByteChannel} for more
|
|
* information on gathering, and {@link
|
|
* java.nio.channels.GatheringByteChannel#write(ByteBuffer[],
|
|
* int, int)} for more information on the subsequence
|
|
* behavior.
|
|
* <P>
|
|
* Depending on the state of the SSLEngine, this method may produce
|
|
* network data without consuming any application data (for example,
|
|
* it may generate handshake data.)
|
|
* <P>
|
|
* The application is responsible for reliably transporting the
|
|
* network data to the peer, and for ensuring that data created by
|
|
* multiple calls to wrap() is transported in the same order in which
|
|
* it was generated. The application must properly synchronize
|
|
* multiple calls to this method.
|
|
* <P>
|
|
* If this <code>SSLEngine</code> has not yet started its initial
|
|
* handshake, this method will automatically start the handshake.
|
|
* <P>
|
|
* This method will attempt to produce SSL/TLS records, and will
|
|
* consume as much source data as possible, but will never consume
|
|
* more than the sum of the bytes remaining in each buffer. Each
|
|
* <code>ByteBuffer</code>'s position is updated to reflect the
|
|
* amount of data consumed or produced. The limits remain the
|
|
* same.
|
|
* <P>
|
|
* The underlying memory used by the <code>srcs</code> and
|
|
* <code>dst ByteBuffer</code>s must not be the same.
|
|
* <P>
|
|
* See the class description for more information on engine closure.
|
|
*
|
|
* @param srcs
|
|
* an array of <code>ByteBuffers</code> containing the
|
|
* outbound application data
|
|
* @param offset
|
|
* The offset within the buffer array of the first buffer from
|
|
* which bytes are to be retrieved; it must be non-negative
|
|
* and no larger than <code>srcs.length</code>
|
|
* @param length
|
|
* The maximum number of buffers to be accessed; it must be
|
|
* non-negative and no larger than
|
|
* <code>srcs.length</code> - <code>offset</code>
|
|
* @param dst
|
|
* a <code>ByteBuffer</code> to hold outbound network data
|
|
* @return an <code>SSLEngineResult</code> describing the result
|
|
* of this operation.
|
|
* @throws SSLException
|
|
* A problem was encountered while processing the
|
|
* data that caused the <code>SSLEngine</code> to abort.
|
|
* See the class description for more information on
|
|
* engine closure.
|
|
* @throws IndexOutOfBoundsException
|
|
* if the preconditions on the <code>offset</code> and
|
|
* <code>length</code> parameters do not hold.
|
|
* @throws ReadOnlyBufferException
|
|
* if the <code>dst</code> buffer is read-only.
|
|
* @throws IllegalArgumentException
|
|
* if either <code>srcs</code> or <code>dst</code>
|
|
* is null, or if any element in the <code>srcs</code>
|
|
* subsequence specified is null.
|
|
* @throws IllegalStateException if the client/server mode
|
|
* has not yet been set.
|
|
* @see java.nio.channels.GatheringByteChannel
|
|
* @see java.nio.channels.GatheringByteChannel#write(
|
|
* ByteBuffer[], int, int)
|
|
*/
|
|
public abstract SSLEngineResult wrap(ByteBuffer [] srcs, int offset,
|
|
int length, ByteBuffer dst) throws SSLException;
|
|
|
|
/**
|
|
* Attempts to decode SSL/TLS network data into a plaintext
|
|
* application data buffer.
|
|
* <P>
|
|
* An invocation of this method behaves in exactly the same manner
|
|
* as the invocation:
|
|
* <blockquote><pre>
|
|
* {@link #unwrap(ByteBuffer, ByteBuffer [], int, int)
|
|
* engine.unwrap(src, new ByteBuffer [] { dst }, 0, 1);}
|
|
* </pre></blockquote>
|
|
*
|
|
* @param src
|
|
* a <code>ByteBuffer</code> containing inbound network data.
|
|
* @param dst
|
|
* a <code>ByteBuffer</code> to hold inbound application data.
|
|
* @return an <code>SSLEngineResult</code> describing the result
|
|
* of this operation.
|
|
* @throws SSLException
|
|
* A problem was encountered while processing the
|
|
* data that caused the <code>SSLEngine</code> to abort.
|
|
* See the class description for more information on
|
|
* engine closure.
|
|
* @throws ReadOnlyBufferException
|
|
* if the <code>dst</code> buffer is read-only.
|
|
* @throws IllegalArgumentException
|
|
* if either <code>src</code> or <code>dst</code>
|
|
* is null.
|
|
* @throws IllegalStateException if the client/server mode
|
|
* has not yet been set.
|
|
* @see #unwrap(ByteBuffer, ByteBuffer [], int, int)
|
|
*/
|
|
public SSLEngineResult unwrap(ByteBuffer src,
|
|
ByteBuffer dst) throws SSLException {
|
|
return unwrap(src, new ByteBuffer [] { dst }, 0, 1);
|
|
}
|
|
|
|
/**
|
|
* Attempts to decode SSL/TLS network data into a sequence of plaintext
|
|
* application data buffers.
|
|
* <P>
|
|
* An invocation of this method behaves in exactly the same manner
|
|
* as the invocation:
|
|
* <blockquote><pre>
|
|
* {@link #unwrap(ByteBuffer, ByteBuffer [], int, int)
|
|
* engine.unwrap(src, dsts, 0, dsts.length);}
|
|
* </pre></blockquote>
|
|
*
|
|
* @param src
|
|
* a <code>ByteBuffer</code> containing inbound network data.
|
|
* @param dsts
|
|
* an array of <code>ByteBuffer</code>s to hold inbound
|
|
* application data.
|
|
* @return an <code>SSLEngineResult</code> describing the result
|
|
* of this operation.
|
|
* @throws SSLException
|
|
* A problem was encountered while processing the
|
|
* data that caused the <code>SSLEngine</code> to abort.
|
|
* See the class description for more information on
|
|
* engine closure.
|
|
* @throws ReadOnlyBufferException
|
|
* if any of the <code>dst</code> buffers are read-only.
|
|
* @throws IllegalArgumentException
|
|
* if either <code>src</code> or <code>dsts</code>
|
|
* is null, or if any element in <code>dsts</code> is null.
|
|
* @throws IllegalStateException if the client/server mode
|
|
* has not yet been set.
|
|
* @see #unwrap(ByteBuffer, ByteBuffer [], int, int)
|
|
*/
|
|
public SSLEngineResult unwrap(ByteBuffer src,
|
|
ByteBuffer [] dsts) throws SSLException {
|
|
if (dsts == null) {
|
|
throw new IllegalArgumentException("dsts == null");
|
|
}
|
|
return unwrap(src, dsts, 0, dsts.length);
|
|
}
|
|
|
|
/**
|
|
* Attempts to decode SSL/TLS network data into a subsequence of
|
|
* plaintext application data buffers. This <i>"scattering"</i>
|
|
* operation decodes, in a single invocation, a sequence of bytes
|
|
* into one or more of a given sequence of buffers. Scattering
|
|
* unwraps are often useful when implementing network protocols or
|
|
* file formats that, for example, group data into segments
|
|
* consisting of one or more fixed-length headers followed by a
|
|
* variable-length body. See
|
|
* {@link java.nio.channels.ScatteringByteChannel} for more
|
|
* information on scattering, and {@link
|
|
* java.nio.channels.ScatteringByteChannel#read(ByteBuffer[],
|
|
* int, int)} for more information on the subsequence
|
|
* behavior.
|
|
* <P>
|
|
* Depending on the state of the SSLEngine, this method may consume
|
|
* network data without producing any application data (for example,
|
|
* it may consume handshake data.)
|
|
* <P>
|
|
* The application is responsible for reliably obtaining the network
|
|
* data from the peer, and for invoking unwrap() on the data in the
|
|
* order it was received. The application must properly synchronize
|
|
* multiple calls to this method.
|
|
* <P>
|
|
* If this <code>SSLEngine</code> has not yet started its initial
|
|
* handshake, this method will automatically start the handshake.
|
|
* <P>
|
|
* This method will attempt to consume one complete SSL/TLS network
|
|
* packet, but will never consume more than the sum of the bytes
|
|
* remaining in the buffers. Each <code>ByteBuffer</code>'s
|
|
* position is updated to reflect the amount of data consumed or
|
|
* produced. The limits remain the same.
|
|
* <P>
|
|
* The underlying memory used by the <code>src</code> and
|
|
* <code>dsts ByteBuffer</code>s must not be the same.
|
|
* <P>
|
|
* The inbound network buffer may be modified as a result of this
|
|
* call: therefore if the network data packet is required for some
|
|
* secondary purpose, the data should be duplicated before calling this
|
|
* method. Note: the network data will not be useful to a second
|
|
* SSLEngine, as each SSLEngine contains unique random state which
|
|
* influences the SSL/TLS messages.
|
|
* <P>
|
|
* See the class description for more information on engine closure.
|
|
*
|
|
* @param src
|
|
* a <code>ByteBuffer</code> containing inbound network data.
|
|
* @param dsts
|
|
* an array of <code>ByteBuffer</code>s to hold inbound
|
|
* application data.
|
|
* @param offset
|
|
* The offset within the buffer array of the first buffer from
|
|
* which bytes are to be transferred; it must be non-negative
|
|
* and no larger than <code>dsts.length</code>.
|
|
* @param length
|
|
* The maximum number of buffers to be accessed; it must be
|
|
* non-negative and no larger than
|
|
* <code>dsts.length</code> - <code>offset</code>.
|
|
* @return an <code>SSLEngineResult</code> describing the result
|
|
* of this operation.
|
|
* @throws SSLException
|
|
* A problem was encountered while processing the
|
|
* data that caused the <code>SSLEngine</code> to abort.
|
|
* See the class description for more information on
|
|
* engine closure.
|
|
* @throws IndexOutOfBoundsException
|
|
* If the preconditions on the <code>offset</code> and
|
|
* <code>length</code> parameters do not hold.
|
|
* @throws ReadOnlyBufferException
|
|
* if any of the <code>dst</code> buffers are read-only.
|
|
* @throws IllegalArgumentException
|
|
* if either <code>src</code> or <code>dsts</code>
|
|
* is null, or if any element in the <code>dsts</code>
|
|
* subsequence specified is null.
|
|
* @throws IllegalStateException if the client/server mode
|
|
* has not yet been set.
|
|
* @see java.nio.channels.ScatteringByteChannel
|
|
* @see java.nio.channels.ScatteringByteChannel#read(
|
|
* ByteBuffer[], int, int)
|
|
*/
|
|
public abstract SSLEngineResult unwrap(ByteBuffer src,
|
|
ByteBuffer [] dsts, int offset, int length) throws SSLException;
|
|
|
|
|
|
/**
|
|
* Returns a delegated <code>Runnable</code> task for
|
|
* this <code>SSLEngine</code>.
|
|
* <P>
|
|
* <code>SSLEngine</code> operations may require the results of
|
|
* operations that block, or may take an extended period of time to
|
|
* complete. This method is used to obtain an outstanding {@link
|
|
* java.lang.Runnable} operation (task). Each task must be assigned
|
|
* a thread (possibly the current) to perform the {@link
|
|
* java.lang.Runnable#run() run} operation. Once the
|
|
* <code>run</code> method returns, the <code>Runnable</code> object
|
|
* is no longer needed and may be discarded.
|
|
* <P>
|
|
* Delegated tasks run in the <code>AccessControlContext</code>
|
|
* in place when this object was created.
|
|
* <P>
|
|
* A call to this method will return each outstanding task
|
|
* exactly once.
|
|
* <P>
|
|
* Multiple delegated tasks can be run in parallel.
|
|
*
|
|
* @return a delegated <code>Runnable</code> task, or null
|
|
* if none are available.
|
|
*/
|
|
public abstract Runnable getDelegatedTask();
|
|
|
|
|
|
/**
|
|
* Signals that no more inbound network data will be sent
|
|
* to this <code>SSLEngine</code>.
|
|
* <P>
|
|
* If the application initiated the closing process by calling
|
|
* {@link #closeOutbound()}, under some circumstances it is not
|
|
* required that the initiator wait for the peer's corresponding
|
|
* close message. (See section 7.2.1 of the TLS specification (<A
|
|
* HREF="http://www.ietf.org/rfc/rfc2246.txt">RFC 2246</A>) for more
|
|
* information on waiting for closure alerts.) In such cases, this
|
|
* method need not be called.
|
|
* <P>
|
|
* But if the application did not initiate the closure process, or
|
|
* if the circumstances above do not apply, this method should be
|
|
* called whenever the end of the SSL/TLS data stream is reached.
|
|
* This ensures closure of the inbound side, and checks that the
|
|
* peer followed the SSL/TLS close procedure properly, thus
|
|
* detecting possible truncation attacks.
|
|
* <P>
|
|
* This method is idempotent: if the inbound side has already
|
|
* been closed, this method does not do anything.
|
|
* <P>
|
|
* {@link #wrap(ByteBuffer, ByteBuffer) wrap()} should be
|
|
* called to flush any remaining handshake data.
|
|
*
|
|
* @throws SSLException
|
|
* if this engine has not received the proper SSL/TLS close
|
|
* notification message from the peer.
|
|
*
|
|
* @see #isInboundDone()
|
|
* @see #isOutboundDone()
|
|
*/
|
|
public abstract void closeInbound() throws SSLException;
|
|
|
|
|
|
/**
|
|
* Returns whether {@link #unwrap(ByteBuffer, ByteBuffer)} will
|
|
* accept any more inbound data messages.
|
|
*
|
|
* @return true if the <code>SSLEngine</code> will not
|
|
* consume anymore network data (and by implication,
|
|
* will not produce any more application data.)
|
|
* @see #closeInbound()
|
|
*/
|
|
public abstract boolean isInboundDone();
|
|
|
|
|
|
/**
|
|
* Signals that no more outbound application data will be sent
|
|
* on this <code>SSLEngine</code>.
|
|
* <P>
|
|
* This method is idempotent: if the outbound side has already
|
|
* been closed, this method does not do anything.
|
|
* <P>
|
|
* {@link #wrap(ByteBuffer, ByteBuffer)} should be
|
|
* called to flush any remaining handshake data.
|
|
*
|
|
* @see #isOutboundDone()
|
|
*/
|
|
public abstract void closeOutbound();
|
|
|
|
|
|
/**
|
|
* Returns whether {@link #wrap(ByteBuffer, ByteBuffer)} will
|
|
* produce any more outbound data messages.
|
|
* <P>
|
|
* Note that during the closure phase, a <code>SSLEngine</code> may
|
|
* generate handshake closure data that must be sent to the peer.
|
|
* <code>wrap()</code> must be called to generate this data. When
|
|
* this method returns true, no more outbound data will be created.
|
|
*
|
|
* @return true if the <code>SSLEngine</code> will not produce
|
|
* any more network data
|
|
*
|
|
* @see #closeOutbound()
|
|
* @see #closeInbound()
|
|
*/
|
|
public abstract boolean isOutboundDone();
|
|
|
|
|
|
// Android-changed: Added warnings about misuse
|
|
/**
|
|
* Returns the names of the cipher suites which could be enabled for use
|
|
* on this engine. Normally, only a subset of these will actually
|
|
* be enabled by default, since this list may include cipher suites which
|
|
* do not meet quality of service requirements for those defaults. Such
|
|
* cipher suites might be useful in specialized applications.
|
|
*
|
|
* <p class="caution">Applications should not blindly enable all supported
|
|
* cipher suites. The supported cipher suites can include signaling cipher suite
|
|
* values that can cause connection problems if enabled inappropriately.
|
|
*
|
|
* <p>The proper way to use this method is to either check if a specific cipher
|
|
* suite is supported via {@code Arrays.asList(getSupportedCipherSuites()).contains(...)}
|
|
* or to filter a desired list of cipher suites to only the supported ones via
|
|
* {@code desiredSuiteSet.retainAll(Arrays.asList(getSupportedCipherSuites()))}.
|
|
*
|
|
* @return an array of cipher suite names
|
|
* @see #getEnabledCipherSuites()
|
|
* @see #setEnabledCipherSuites(String [])
|
|
*/
|
|
public abstract String [] getSupportedCipherSuites();
|
|
|
|
|
|
/**
|
|
* Returns the names of the SSL cipher suites which are currently
|
|
* enabled for use on this engine. When an SSLEngine is first
|
|
* created, all enabled cipher suites support a minimum quality of
|
|
* service. Thus, in some environments this value might be empty.
|
|
* <P>
|
|
* Even if a suite has been enabled, it might never be used. (For
|
|
* example, the peer does not support it, the requisite
|
|
* certificates/private keys for the suite are not available, or an
|
|
* anonymous suite is enabled but authentication is required.)
|
|
*
|
|
* @return an array of cipher suite names
|
|
* @see #getSupportedCipherSuites()
|
|
* @see #setEnabledCipherSuites(String [])
|
|
*/
|
|
public abstract String [] getEnabledCipherSuites();
|
|
|
|
|
|
/**
|
|
* Sets the cipher suites enabled for use on this engine.
|
|
* <P>
|
|
* Each cipher suite in the <code>suites</code> parameter must have
|
|
* been listed by getSupportedCipherSuites(), or the method will
|
|
* fail. Following a successful call to this method, only suites
|
|
* listed in the <code>suites</code> parameter are enabled for use.
|
|
* <P>
|
|
* See {@link #getEnabledCipherSuites()} for more information
|
|
* on why a specific cipher suite may never be used on a engine.
|
|
*
|
|
* @param suites Names of all the cipher suites to enable
|
|
* @throws IllegalArgumentException when one or more of the ciphers
|
|
* named by the parameter is not supported, or when the
|
|
* parameter is null.
|
|
* @see #getSupportedCipherSuites()
|
|
* @see #getEnabledCipherSuites()
|
|
*/
|
|
public abstract void setEnabledCipherSuites(String suites []);
|
|
|
|
|
|
/**
|
|
* Returns the names of the protocols which could be enabled for use
|
|
* with this <code>SSLEngine</code>.
|
|
*
|
|
* @return an array of protocols supported
|
|
*/
|
|
public abstract String [] getSupportedProtocols();
|
|
|
|
|
|
/**
|
|
* Returns the names of the protocol versions which are currently
|
|
* enabled for use with this <code>SSLEngine</code>.
|
|
*
|
|
* @return an array of protocols
|
|
* @see #setEnabledProtocols(String [])
|
|
*/
|
|
public abstract String [] getEnabledProtocols();
|
|
|
|
|
|
// Android-added: Added paragraph about contiguous protocols.
|
|
/**
|
|
* Set the protocol versions enabled for use on this engine.
|
|
* <P>
|
|
* The protocols must have been listed by getSupportedProtocols()
|
|
* as being supported. Following a successful call to this method,
|
|
* only protocols listed in the <code>protocols</code> parameter
|
|
* are enabled for use.
|
|
* <p>
|
|
* Because of the way the protocol version is negotiated, connections
|
|
* will only be able to use a member of the lowest set of contiguous
|
|
* enabled protocol versions. For example, enabling TLSv1.2 and TLSv1
|
|
* will result in connections only being able to use TLSv1.
|
|
*
|
|
* @param protocols Names of all the protocols to enable.
|
|
* @throws IllegalArgumentException when one or more of
|
|
* the protocols named by the parameter is not supported or
|
|
* when the protocols parameter is null.
|
|
* @see #getEnabledProtocols()
|
|
*/
|
|
public abstract void setEnabledProtocols(String protocols[]);
|
|
|
|
|
|
/**
|
|
* Returns the <code>SSLSession</code> in use in this
|
|
* <code>SSLEngine</code>.
|
|
* <P>
|
|
* These can be long lived, and frequently correspond to an entire
|
|
* login session for some user. The session specifies a particular
|
|
* cipher suite which is being actively used by all connections in
|
|
* that session, as well as the identities of the session's client
|
|
* and server.
|
|
* <P>
|
|
* Unlike {@link SSLSocket#getSession()}
|
|
* this method does not block until handshaking is complete.
|
|
* <P>
|
|
* Until the initial handshake has completed, this method returns
|
|
* a session object which reports an invalid cipher suite of
|
|
* "SSL_NULL_WITH_NULL_NULL".
|
|
*
|
|
* @return the <code>SSLSession</code> for this <code>SSLEngine</code>
|
|
* @see SSLSession
|
|
*/
|
|
public abstract SSLSession getSession();
|
|
|
|
|
|
/**
|
|
* Returns the {@code SSLSession} being constructed during a SSL/TLS
|
|
* handshake.
|
|
* <p>
|
|
* TLS protocols may negotiate parameters that are needed when using
|
|
* an instance of this class, but before the {@code SSLSession} has
|
|
* been completely initialized and made available via {@code getSession}.
|
|
* For example, the list of valid signature algorithms may restrict
|
|
* the type of certificates that can used during TrustManager
|
|
* decisions, or the maximum TLS fragment packet sizes can be
|
|
* resized to better support the network environment.
|
|
* <p>
|
|
* This method provides early access to the {@code SSLSession} being
|
|
* constructed. Depending on how far the handshake has progressed,
|
|
* some data may not yet be available for use. For example, if a
|
|
* remote server will be sending a Certificate chain, but that chain
|
|
* has yet not been processed, the {@code getPeerCertificates}
|
|
* method of {@code SSLSession} will throw a
|
|
* SSLPeerUnverifiedException. Once that chain has been processed,
|
|
* {@code getPeerCertificates} will return the proper value.
|
|
*
|
|
* @see SSLSocket
|
|
* @see SSLSession
|
|
* @see ExtendedSSLSession
|
|
* @see X509ExtendedKeyManager
|
|
* @see X509ExtendedTrustManager
|
|
*
|
|
* @return null if this instance is not currently handshaking, or
|
|
* if the current handshake has not progressed far enough to
|
|
* create a basic SSLSession. Otherwise, this method returns the
|
|
* {@code SSLSession} currently being negotiated.
|
|
* @throws UnsupportedOperationException if the underlying provider
|
|
* does not implement the operation.
|
|
*
|
|
* @since 1.7
|
|
*/
|
|
public SSLSession getHandshakeSession() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
|
|
/**
|
|
* Initiates handshaking (initial or renegotiation) on this SSLEngine.
|
|
* <P>
|
|
* This method is not needed for the initial handshake, as the
|
|
* <code>wrap()</code> and <code>unwrap()</code> methods will
|
|
* implicitly call this method if handshaking has not already begun.
|
|
* <P>
|
|
* Note that the peer may also request a session renegotiation with
|
|
* this <code>SSLEngine</code> by sending the appropriate
|
|
* session renegotiate handshake message.
|
|
* <P>
|
|
* Unlike the {@link SSLSocket#startHandshake()
|
|
* SSLSocket#startHandshake()} method, this method does not block
|
|
* until handshaking is completed.
|
|
* <P>
|
|
* To force a complete SSL/TLS session renegotiation, the current
|
|
* session should be invalidated prior to calling this method.
|
|
* <P>
|
|
* Some protocols may not support multiple handshakes on an existing
|
|
* engine and may throw an <code>SSLException</code>.
|
|
*
|
|
* @throws SSLException
|
|
* if a problem was encountered while signaling the
|
|
* <code>SSLEngine</code> to begin a new handshake.
|
|
* See the class description for more information on
|
|
* engine closure.
|
|
* @throws IllegalStateException if the client/server mode
|
|
* has not yet been set.
|
|
* @see SSLSession#invalidate()
|
|
*/
|
|
public abstract void beginHandshake() throws SSLException;
|
|
|
|
|
|
/**
|
|
* Returns the current handshake status for this <code>SSLEngine</code>.
|
|
*
|
|
* @return the current <code>SSLEngineResult.HandshakeStatus</code>.
|
|
*/
|
|
public abstract SSLEngineResult.HandshakeStatus getHandshakeStatus();
|
|
|
|
|
|
/**
|
|
* Configures the engine to use client (or server) mode when
|
|
* handshaking.
|
|
* <P>
|
|
* This method must be called before any handshaking occurs.
|
|
* Once handshaking has begun, the mode can not be reset for the
|
|
* life of this engine.
|
|
* <P>
|
|
* Servers normally authenticate themselves, and clients
|
|
* are not required to do so.
|
|
*
|
|
* @param mode true if the engine should start its handshaking
|
|
* in "client" mode
|
|
* @throws IllegalArgumentException if a mode change is attempted
|
|
* after the initial handshake has begun.
|
|
* @see #getUseClientMode()
|
|
*/
|
|
public abstract void setUseClientMode(boolean mode);
|
|
|
|
|
|
/**
|
|
* Returns true if the engine is set to use client mode when
|
|
* handshaking.
|
|
*
|
|
* @return true if the engine should do handshaking
|
|
* in "client" mode
|
|
* @see #setUseClientMode(boolean)
|
|
*/
|
|
public abstract boolean getUseClientMode();
|
|
|
|
|
|
/**
|
|
* Configures the engine to <i>require</i> client authentication. This
|
|
* option is only useful for engines in the server mode.
|
|
* <P>
|
|
* An engine's client authentication setting is one of the following:
|
|
* <ul>
|
|
* <li> client authentication required
|
|
* <li> client authentication requested
|
|
* <li> no client authentication desired
|
|
* </ul>
|
|
* <P>
|
|
* Unlike {@link #setWantClientAuth(boolean)}, if this option is set and
|
|
* the client chooses not to provide authentication information
|
|
* about itself, <i>the negotiations will stop and the engine will
|
|
* begin its closure procedure</i>.
|
|
* <P>
|
|
* Calling this method overrides any previous setting made by
|
|
* this method or {@link #setWantClientAuth(boolean)}.
|
|
*
|
|
* @param need set to true if client authentication is required,
|
|
* or false if no client authentication is desired.
|
|
* @see #getNeedClientAuth()
|
|
* @see #setWantClientAuth(boolean)
|
|
* @see #getWantClientAuth()
|
|
* @see #setUseClientMode(boolean)
|
|
*/
|
|
public abstract void setNeedClientAuth(boolean need);
|
|
|
|
|
|
/**
|
|
* Returns true if the engine will <i>require</i> client authentication.
|
|
* This option is only useful to engines in the server mode.
|
|
*
|
|
* @return true if client authentication is required,
|
|
* or false if no client authentication is desired.
|
|
* @see #setNeedClientAuth(boolean)
|
|
* @see #setWantClientAuth(boolean)
|
|
* @see #getWantClientAuth()
|
|
* @see #setUseClientMode(boolean)
|
|
*/
|
|
public abstract boolean getNeedClientAuth();
|
|
|
|
|
|
/**
|
|
* Configures the engine to <i>request</i> client authentication.
|
|
* This option is only useful for engines in the server mode.
|
|
* <P>
|
|
* An engine's client authentication setting is one of the following:
|
|
* <ul>
|
|
* <li> client authentication required
|
|
* <li> client authentication requested
|
|
* <li> no client authentication desired
|
|
* </ul>
|
|
* <P>
|
|
* Unlike {@link #setNeedClientAuth(boolean)}, if this option is set and
|
|
* the client chooses not to provide authentication information
|
|
* about itself, <i>the negotiations will continue</i>.
|
|
* <P>
|
|
* Calling this method overrides any previous setting made by
|
|
* this method or {@link #setNeedClientAuth(boolean)}.
|
|
*
|
|
* @param want set to true if client authentication is requested,
|
|
* or false if no client authentication is desired.
|
|
* @see #getWantClientAuth()
|
|
* @see #setNeedClientAuth(boolean)
|
|
* @see #getNeedClientAuth()
|
|
* @see #setUseClientMode(boolean)
|
|
*/
|
|
public abstract void setWantClientAuth(boolean want);
|
|
|
|
|
|
/**
|
|
* Returns true if the engine will <i>request</i> client authentication.
|
|
* This option is only useful for engines in the server mode.
|
|
*
|
|
* @return true if client authentication is requested,
|
|
* or false if no client authentication is desired.
|
|
* @see #setNeedClientAuth(boolean)
|
|
* @see #getNeedClientAuth()
|
|
* @see #setWantClientAuth(boolean)
|
|
* @see #setUseClientMode(boolean)
|
|
*/
|
|
public abstract boolean getWantClientAuth();
|
|
|
|
|
|
/**
|
|
* Controls whether new SSL sessions may be established by this engine.
|
|
* If session creations are not allowed, and there are no
|
|
* existing sessions to resume, there will be no successful
|
|
* handshaking.
|
|
*
|
|
* @param flag true indicates that sessions may be created; this
|
|
* is the default. false indicates that an existing session
|
|
* must be resumed
|
|
* @see #getEnableSessionCreation()
|
|
*/
|
|
public abstract void setEnableSessionCreation(boolean flag);
|
|
|
|
|
|
/**
|
|
* Returns true if new SSL sessions may be established by this engine.
|
|
*
|
|
* @return true indicates that sessions may be created; this
|
|
* is the default. false indicates that an existing session
|
|
* must be resumed
|
|
* @see #setEnableSessionCreation(boolean)
|
|
*/
|
|
public abstract boolean getEnableSessionCreation();
|
|
|
|
/**
|
|
* Returns the SSLParameters in effect for this SSLEngine.
|
|
* The ciphersuites and protocols of the returned SSLParameters
|
|
* are always non-null.
|
|
*
|
|
* @return the SSLParameters in effect for this SSLEngine.
|
|
* @since 1.6
|
|
*/
|
|
public SSLParameters getSSLParameters() {
|
|
SSLParameters params = new SSLParameters();
|
|
params.setCipherSuites(getEnabledCipherSuites());
|
|
params.setProtocols(getEnabledProtocols());
|
|
if (getNeedClientAuth()) {
|
|
params.setNeedClientAuth(true);
|
|
} else if (getWantClientAuth()) {
|
|
params.setWantClientAuth(true);
|
|
}
|
|
return params;
|
|
}
|
|
|
|
/**
|
|
* Applies SSLParameters to this engine.
|
|
*
|
|
* <p>This means:
|
|
* <ul>
|
|
* <li>If {@code params.getCipherSuites()} is non-null,
|
|
* {@code setEnabledCipherSuites()} is called with that value.</li>
|
|
* <li>If {@code params.getProtocols()} is non-null,
|
|
* {@code setEnabledProtocols()} is called with that value.</li>
|
|
* <li>If {@code params.getNeedClientAuth()} or
|
|
* {@code params.getWantClientAuth()} return {@code true},
|
|
* {@code setNeedClientAuth(true)} and
|
|
* {@code setWantClientAuth(true)} are called, respectively;
|
|
* otherwise {@code setWantClientAuth(false)} is called.</li>
|
|
* <li>If {@code params.getServerNames()} is non-null, the engine will
|
|
* configure its server names with that value.</li>
|
|
* <li>If {@code params.getSNIMatchers()} is non-null, the engine will
|
|
* configure its SNI matchers with that value.</li>
|
|
* </ul>
|
|
*
|
|
* @param params the parameters
|
|
* @throws IllegalArgumentException if the setEnabledCipherSuites() or
|
|
* the setEnabledProtocols() call fails
|
|
* @since 1.6
|
|
*/
|
|
public void setSSLParameters(SSLParameters params) {
|
|
String[] s;
|
|
s = params.getCipherSuites();
|
|
if (s != null) {
|
|
setEnabledCipherSuites(s);
|
|
}
|
|
s = params.getProtocols();
|
|
if (s != null) {
|
|
setEnabledProtocols(s);
|
|
}
|
|
if (params.getNeedClientAuth()) {
|
|
setNeedClientAuth(true);
|
|
} else if (params.getWantClientAuth()) {
|
|
setWantClientAuth(true);
|
|
} else {
|
|
setWantClientAuth(false);
|
|
}
|
|
}
|
|
|
|
// BEGIN Android-added: Integrate ALPN-related methods from OpenJDK 9+181
|
|
// Also removed references to DTLS in documentation; Android doesn't support DTLS.
|
|
/**
|
|
* Returns the most recent application protocol value negotiated for this
|
|
* connection.
|
|
* <p>
|
|
* If supported by the underlying SSL/TLS implementation,
|
|
* application name negotiation mechanisms such as <a
|
|
* href="http://www.ietf.org/rfc/rfc7301.txt"> RFC 7301 </a>, the
|
|
* Application-Layer Protocol Negotiation (ALPN), can negotiate
|
|
* application-level values between peers.
|
|
* <p>
|
|
* @implSpec
|
|
* The implementation in this class throws
|
|
* {@code UnsupportedOperationException} and performs no other action.
|
|
*
|
|
* @return null if it has not yet been determined if application
|
|
* protocols might be used for this connection, an empty
|
|
* {@code String} if application protocols values will not
|
|
* be used, or a non-empty application protocol {@code String}
|
|
* if a value was successfully negotiated.
|
|
* @throws UnsupportedOperationException if the underlying provider
|
|
* does not implement the operation.
|
|
* @since 9
|
|
*/
|
|
public String getApplicationProtocol() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
/**
|
|
* Returns the application protocol value negotiated on a SSL/TLS
|
|
* handshake currently in progress.
|
|
* <p>
|
|
* Like {@link #getHandshakeSession()},
|
|
* a connection may be in the middle of a handshake. The
|
|
* application protocol may or may not yet be available.
|
|
* <p>
|
|
* @implSpec
|
|
* The implementation in this class throws
|
|
* {@code UnsupportedOperationException} and performs no other action.
|
|
*
|
|
* @return null if it has not yet been determined if application
|
|
* protocols might be used for this handshake, an empty
|
|
* {@code String} if application protocols values will not
|
|
* be used, or a non-empty application protocol {@code String}
|
|
* if a value was successfully negotiated.
|
|
* @throws UnsupportedOperationException if the underlying provider
|
|
* does not implement the operation.
|
|
* @since 9
|
|
*/
|
|
public String getHandshakeApplicationProtocol() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
/**
|
|
* Registers a callback function that selects an application protocol
|
|
* value for a SSL/TLS handshake.
|
|
* The function overrides any values supplied using
|
|
* {@link SSLParameters#setApplicationProtocols
|
|
* SSLParameters.setApplicationProtocols} and it supports the following
|
|
* type parameters:
|
|
* <blockquote>
|
|
* <dl>
|
|
* <dt> {@code SSLEngine}
|
|
* <dd> The function's first argument allows the current {@code SSLEngine}
|
|
* to be inspected, including the handshake session and configuration
|
|
* settings.
|
|
* <dt> {@code List<String>}
|
|
* <dd> The function's second argument lists the application protocol names
|
|
* advertised by the TLS peer.
|
|
* <dt> {@code String}
|
|
* <dd> The function's result is an application protocol name, or null to
|
|
* indicate that none of the advertised names are acceptable.
|
|
* If the return value is an empty {@code String} then application
|
|
* protocol indications will not be used.
|
|
* If the return value is null (no value chosen) or is a value that
|
|
* was not advertised by the peer, the underlying protocol will
|
|
* determine what action to take. (For example, ALPN will send a
|
|
* "no_application_protocol" alert and terminate the connection.)
|
|
* </dl>
|
|
* </blockquote>
|
|
*
|
|
* For example, the following call registers a callback function that
|
|
* examines the TLS handshake parameters and selects an application protocol
|
|
* name:
|
|
* <pre>{@code
|
|
* serverEngine.setHandshakeApplicationProtocolSelector(
|
|
* (serverEngine, clientProtocols) -> {
|
|
* SSLSession session = serverEngine.getHandshakeSession();
|
|
* return chooseApplicationProtocol(
|
|
* serverEngine,
|
|
* clientProtocols,
|
|
* session.getProtocol(),
|
|
* session.getCipherSuite());
|
|
* });
|
|
* }</pre>
|
|
*
|
|
* @apiNote
|
|
* This method should be called by TLS server applications before the TLS
|
|
* handshake begins. Also, this {@code SSLEngine} should be configured with
|
|
* parameters that are compatible with the application protocol selected by
|
|
* the callback function. For example, enabling a poor choice of cipher
|
|
* suites could result in no suitable application protocol.
|
|
* See {@link SSLParameters}.
|
|
*
|
|
* @implSpec
|
|
* The implementation in this class throws
|
|
* {@code UnsupportedOperationException} and performs no other action.
|
|
*
|
|
* @param selector the callback function, or null to disable the callback
|
|
* functionality.
|
|
* @throws UnsupportedOperationException if the underlying provider
|
|
* does not implement the operation.
|
|
* @since 9
|
|
*/
|
|
public void setHandshakeApplicationProtocolSelector(
|
|
BiFunction<SSLEngine, List<String>, String> selector) {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
/**
|
|
* Retrieves the callback function that selects an application protocol
|
|
* value during a SSL/TLS handshake.
|
|
* See {@link #setHandshakeApplicationProtocolSelector
|
|
* setHandshakeApplicationProtocolSelector}
|
|
* for the function's type parameters.
|
|
*
|
|
* @implSpec
|
|
* The implementation in this class throws
|
|
* {@code UnsupportedOperationException} and performs no other action.
|
|
*
|
|
* @return the callback function, or null if none has been set.
|
|
* @throws UnsupportedOperationException if the underlying provider
|
|
* does not implement the operation.
|
|
* @since 9
|
|
*/
|
|
public BiFunction<SSLEngine, List<String>, String>
|
|
getHandshakeApplicationProtocolSelector() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
// END Android-added: Integrate ALPN-related methods from OpenJDK 9+181
|
|
}
|