SSL/TLS双向认证实现（JAVA、TOMCAT）

双向认证，客户端和服务端都会互相认证，即双发之间要证书交换

证书生成

需服务端和客户端都生成证书，并进行证书交换（通常是服务端将server.cer发送给客户端，客户端将client.cer发送给服务端，然后各自导入自己的信任证书库）

服务端：

1. 生成jks格式服务器端的keystore文件，keypass与storepass需一致，因tomcat server.xml中仅一处keystorePass

keytool -genkey -alias server -keystore D:\skeystore.jks -keypass 123456 -storepass 123456 -keyalg RSA -keysize 512 -validity 3650 -v -dname “CN={hostname},O=company,OU=company, L=city,ST=province”

注：{hostname}取服务器的hostname值

2. 从keystore中导出别名为server的服务端证书

keytool -export -alias server -keystore D:\skeystore.jks -storepass 123456 -file D:\server.cer

3. 将server.cer导入客户端的信任证书库truststore.jks

keytool -import -alias trustServer -file D:\server.cer -keystore D:\ctruststore.jks -storepass 123456

客户端：

4. 生成jks格式客户端的keystore文件,keypass与storepass需一致

keytool -genkey -alias client -keystore ckeystore.jks -keypass 123456 -storepass 123456 -keyalg RSA -keysize 512 -validity 3650 -v -dname “CN=someone,O=company,OU=company, L=city,ST=province”

5. 从keystore中导出别名为client的客户端证书

keytool -export -alias client -keystore ckeystore.jks -storepass 123456 -file client.cer

6. 将client.cer导入服务端的信任证书库struststore.jks

keytool -import -alias trustClient -file client.cer -keystore struststore.jks -storepass 123456

注：该实现所用到的服务端证书库：skeystore.jks,struststore.jks;客户端证书库：ckeystore.jks,ctruststore.jks

配置tomcat环境中的server.xml

将证书文件skeystore.jks,struststore.jks拷贝至tomcat的conf目录下

<Connector port="8443" protocol="HTTP/1.1"
SSLEnabled="true" clientAuth="true" sslProtocol="TLS"
maxThreads="150" scheme="https" secure="true"
keystoreFile="conf/skeystore.jks" keystorePass="123456"
truststoreFile="conf/struststore.jks" truststorePass="123456" />

服务端、客户端

服务端web.xml

<security-constraint>
<web-resource-collection>
<web-resource-name>ssl</web-resource-name>
<url-pattern>/*</url-pattern>  //强制所有请求走https
</web-resource-collection>
<user-data-constraint>
<transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
</security-constraint>

客户端代码（需要引入jar文件httpcore-4.0.1.jar，httpclient-4.0.1.jar，httpmime-4.0.1.jar）

package com.ssl.http;

import java.io.File;
import java.io.FileInputStream;
import java.security.KeyStore;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;

/**
*  带证书认证请求处理
* @author blue_coat
* @date 2015-7-26
*/
public class HttpClientWithCA {
public CertificateStore store = new CertificateStore ();
store.keyFile = "D:\ckeystore.jks";
store.keyPass = "123456";
store.trustFile = "D:\ctruststore.jks";
store.trustPass = "123456";

public final static void main(String[] args) throws Exception {
String result = oneAuthSSL("https://localhost:8443/ssl", "", store);
......
}

/**
* 双向认证接口
*/
public String doubleAuthSSL(String url, String data, CertificateStore store) throws Exception {
String result = null;
DefaultHttpClient httpclient = new DefaultHttpClient();
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
FileInputStream keyStoreIn = new FileInputStream(new File(store.keyFile));
FileInputStream trustStoreIn = new FileInputStre
aecb
am(new File(store.trustFile));
try {
keyStore.load(keyStoreIn, store.keyPass.toCharArray());
trustStore.load(trustStoreIn, store.trustPass.toCharArray());
} finally {
keyStoreIn.close();
trustStoreIn.close();
}
SSLSocketFactory socketFactory = new SSLSocketFactory(keyStore, store.keyPass, trustStore);
Scheme sch = new Scheme("https", socketFactory, 8443);
httpclient.getConnectionManager().getSchemeRegistry().register(sch);
HttpGet httpget = new HttpGet(url);
System.out.println("executing: " + httpget.getRequestLine());
HttpResponse response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
if (entity != null) {
System.out.println("Response Content-length: " + entity.getContentLength());
result = EntityUtils.toString(entity);
entity.consumeContent();
}
// 关闭连接，腾出内存空间
httpclient.getConnectionManager().shutdown();
return result;
}

/**
* 双向认证证书信息
*/
public class CertificateStore {
/**
* 客户端证书库
*/
public String keyFile= "";
/**
* 客户端证书密码
*/
public String keyPass= "";
/**
* 服务器证书信任证书库
*/
public String trustFile= "";
/**
* 服务器证书信任证书库密码
*/
public String trustPass= "";
}
}

运行后调用成功，打印信息如下：

executing: GET https://localhost:8443/ssl HTTP/1.1
----------------------------------------
HTTP/1.1 200 OK
Response content length: 8432