Question

我想知道Apache Tomcat是否支持TLS v1.2协议。我没有找到任何关于此的文档！谢谢！

Answer 1

我有一个类似的用例，即使Tomcat 7严格只使用TLSv1.2，而不是回退到早期的SSL协议，如TLSv1.1或SSLv3。以下步骤将回答如何启用Tomcat以支持TLSv1.2。

我正在使用：C：\ apache-tomcat-7.0.64-64bit和C：\ Java64 \ jdk1.8.0_60。

遵循此说明：https://tomcat.apache.org/tomcat-7.0-doc/security-howto.html。 Tomcat设置SSL支持相对简单。

从许多参考文献中我测试了很多组合，最后我发现1会强制Tomcat 7只接受TLSv1.2。触摸需要2个地方：

1）在C：\ apache-tomcat-7.0.64-64bit \ conf \ server.xml

<Connector port="8443" 
 protocol="org.apache.coyote.http11.Http11Protocol"
 maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
 keystoreFile="ssl/.keystore" keystorePass="changeit"
 clientAuth="false" sslProtocol="SSL" sslEnabledProtocols="TLSv1.2" />

，其中

keystoreFile =本地自签名信任库

org.apache.coyote.http11.Http11Protocol = JSSE BIO实施。

我们不使用org.apache.coyote.http11.Http11AprProtocol，因为它是由openssl提供的。底层的openssl将回退以支持早期的SSL协议。

2）启动Tomcat时，启用以下环境参数。

set JAVA_HOME=C:\Java64\jdk1.8.0_60
set PATH=%PATH%;C:\Java64\jdk1.8.0_60\bin
set CATALINA_HOME=C:\apache-tomcat-7.0.64-64bit
set JAVA_OPTS=-Djdk.tls.client.protocols="TLSv1.2" -Dsun.security.ssl.allowUnsafeRenegotiation=false -Dhttps.protocols="TLSv1.2"

需要JAVA_OPTS限制，否则Tomcat（由Java8提供支持）将退回以支持早期的SSL协议。

启动Tomcat C：\ apache-tomcat-7.0.64-64bit \ bin \ startup.bat

我们可以看到JAVA_OPTS出现在Tomcat启动日志中。

Oct 16, 2015 4:10:17 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djdk.tls.client.protocols=TLSv1.2
Oct 16, 2015 4:10:17 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dsun.security.ssl.allowUnsafeRenegotiation=false
Oct 16, 2015 4:10:17 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dhttps.protocols=TLSv1.2

然后，我们可以使用openssl命令验证我们的设置。首先使用TLSv1.1协议连接localhost：8443。 Tomcat拒绝回复服务器证书。

C:\OpenSSL-Win32\bin>openssl s_client -connect localhost:8443 -tls1_1
Loading 'screen' into random state - done
CONNECTED(000001C0)
5372:error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number:.\ssl\s3_pkt.c:362:
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 5 bytes and written 0 bytes

使用TLSv1.2协议连接localhost：8443，Tomcat使用证书回复ServerHello：

C:\OpenSSL-Win32\bin>openssl s_client -connect localhost:8443 -tls1_2
Loading 'screen' into random state - done
CONNECTED(000001C0)
depth=1 C = US, ST = Washington, L = Seattle, O = getaCert - www.getacert.com
verify error:num=19:self signed certificate in certificate chain
---
Certificate chain
0 s:/C=SG/ST=SG/L=Singapore/O=Xxxx/OU=Development/CN=Myself
   i:/C=US/ST=Washington/L=Seattle/O=getaCert - www.getacert.com
1 s:/C=US/ST=Washington/L=Seattle/O=getaCert - www.getacert.com
   i:/C=US/ST=Washington/L=Seattle/O=getaCert - www.getacert.com
---
Server certificate
-----BEGIN CERTIFICATE-----
(ignored)
-----END CERTIFICATE-----
subject=/C=SG/ST=SG/L=Singapore/O=Xxxx/OU=Development/CN=Myself
issuer=/C=US/ST=Washington/L=Seattle/O=getaCert - www.getacert.com
---
No client certificate CA names sent
Peer signing digest: SHA512
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 2367 bytes and written 443 bytes

这证明Tomcat现在严格响应TLSv1.2请求。