本文小编为大家详细介绍“怎么通过Java实现SSL交互功能”，内容详细，步骤清晰，细节处理妥当，希望这篇“怎么通过Java实现SSL交互功能”文章能帮助大家解决疑惑，下面跟着小编的思路慢慢深入，一起来学习新知识吧。
因为要产生 key 信任库，要求的密码至少的 6位数，所以密码设为 123456
首先 生成 根密钥和根证书
然后 生成 客户端密钥 和 客户端证书，使用根证书对应客户端证书签名，将根证书和签名客户端证书添加到密钥库中
最后 同上生成 服务端签名证书，并将根证书和服务端证书添加到 密钥库中。
对应的脚本如下所示：
#!/bin/bash
# 加个前缀
PFX='file'
# Password 这里只能使用单引号
PASS='123456'
echo "---- 产生根相关文件 ----"
echo "创建自签名的根密钥"
openssl genrsa -out ${PFX}.rootkey.pem 2048
echo "生成根证书"
openssl req -x509 -new -key ${PFX}.rootkey.pem -out ${PFX}.root.crt -subj "/C=CN/ST=GD/L=GZ/O=RootCA/OU=RootCA/CN=RootCA"
echo "----- 产生客户端相关文件 -----"
echo "生成客户端密钥"
openssl genrsa -out ${PFX}.clientkey.pem 2048
echo "生成客户端证书请求文件，使用根证书进行签发"
openssl req -new -key ${PFX}.clientkey.pem -out ${PFX}.client.csr -subj "/C=CN/ST=GD/L=GZ/O=BMW/OU=Vehicle/CN=Vehicle1"
echo "用根证书来签发客户端请求文件，生成客户端证书client.crt"
openssl x509 -req -in ${PFX}.client.csr -CA ${PFX}.root.crt -CAkey ${PFX}.rootkey.pem -CAcreateserial -days 3650 -out ${PFX}.client.crt
echo "打包客户端资料为pkcs12格式(client.pkcs12)"
openssl pkcs12 -export -in ${PFX}.client.crt -inkey clientkey.pem -out ${PFX}.client.pkcs12 -passin "pass:$PASS" -passout "pass:$PASS"
echo "生成信任客户端的keystore，把根证书以及需要信任的客户端的证书添加到这个keystore"
keytool -importcert -alias ca -file ${PFX}.root.crt -keystore ${PFX}.clienttrust.jks -storepass "$PASS" <<EOF
是
EOF
keytool -importcert -alias clientcert -file ${PFX}.client.crt -keystore ${PFX}.clienttrust.jks -storepass "$PASS"
echo "--------产生服务端相关文件----"
echo "生成服务器端的密匙"
openssl genrsa -out ${PFX}.serverkey.pem 2048
echo "生成服务器端证书的请求文件。请求根证书来签发"
openssl req -new -key ${PFX}.serverkey.pem -out ${PFX}.server.csr -subj "/C=CN/ST=GD/L=GZ/O=BMW/OU=IT/CN=Broker"
echo "用根证书来签发服务器端请求文件，生成服务器端证书server.crt"
openssl x509 -req -in ${PFX}.server.csr -CA ${PFX}.root.crt -CAkey ${PFX}.rootkey.pem -CAcreateserial -days 3650 -out ${PFX}.server.crt
echo "打包服务器端资料为pkcs12格式(server.pkcs12 )"
openssl pkcs12 -export -in ${PFX}.server.crt -inkey ${PFX}.serverkey.pem -out ${PFX}.server.pkcs12 -passin "pass:$PASS" -passout "pass:$PASS"
echo "生成信任服务器端的keystore，把根证书以及需要信任的服务端的证书添加到这个keystore"
keytool -importcert -alias ca -file ${PFX}.root.crt -keystore ${PFX}.servertrust.jks -storepass "$PASS" <<EOF
是
EOF
keytool -importcert -alias servercert -file ${PFX}.server.crt -keystore ${PFX}.servertrust.jks -storepass "$PASS"生成的文件目录，如下图所示：
#编码
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLServerSocket;
import java.net.Socket;
public class SSLServer {
private SSLServerSocket sslServerSocket;
public static void main(String[] args) throws Exception {
SSLServer server = new SSLServer();
server.initTestServer();
server.process();
}
private SSLServerSocket initTestServer() throws Exception {
// ssl-cert 放在 测试 resources 目录下
String certDic = SSLServer.class.getClassLoader().getResource("ssl-cert").getPath();
sslServerSocket = initSocket(certDic + "/file.server.pkcs12",
certDic + "/file.clienttrust.jks",
"123456");
// 如果为 false 表示单向认证，否则为双向认证
sslServerSocket.setNeedClientAuth(false);
System.out.println("Server test initialted!");
return sslServerSocket;
}
private SSLServerSocket initSocket(String keyPath, String trustPath, String password) throws Exception {
SSLContext context = SSLContext.getInstance("TLSv1.2");
char[] keystorePass = password.toCharArray();
context.init(SSLUtils.creatKey(keyPath, keystorePass).getKeyManagers(),
SSLUtils.creatTrustJks(trustPath, keystorePass).getTrustManagers(),
null);
return (SSLServerSocket) context.getServerSocketFactory().createServerSocket(9999);
}
//服务端回复客户端
private void process() throws Exception {
String bye = "Hello, I am Server!";
while (true) {
Socket socket = sslServerSocket.accept();
System.out.println("Received: " + SSLUtils.read(socket));
SSLUtils.write(bye, socket);
}
}
}import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
public class SSLClient {
private SSLSocket sslSocket;
public static void main(String[] args) throws Exception {
SSLClient client = new SSLClient();
client.init();
client.process();
}
private void init() throws Exception {
// ssl-cert 放在 测试 resources 目录下
String certDic = this.getClass().getClassLoader().getResource("ssl-cert").getPath();
initSocket(certDic + "/file.server.pkcs12", certDic + "/file.servertrust.jks", "123456");
System.out.println("Client initiated.");
}
private void initSocket(String keystorePath, String trustStorePath, String password) throws Exception {
char[] keystorePass = password.toCharArray();
KeyManager[] keyManagers = null;
KeyManagerFactory keyManagerFactory = SSLUtils.creatKey(keystorePath, keystorePass);
if (keyManagerFactory != null) {
keyManagers = keyManagerFactory.getKeyManagers();
}
TrustManager[] trustManagers = null;
TrustManagerFactory trustManagerFactory = SSLUtils.creatTrustJks(trustStorePath, keystorePass);
if (trustManagerFactory != null) {
trustManagers = trustManagerFactory.getTrustManagers();
}
SSLContext context = SSLContext.getInstance("TLSv1.2");
context.init(keyManagers, trustManagers, null);
String host = "127.0.0.1";
sslSocket = (SSLSocket) context.getSocketFactory().createSocket(host, 9999);
}
public void process() throws Exception {
String hello = "Client Hello";
SSLUtils.write(hello, sslSocket);
System.out.println(SSLUtils.read(sslSocket));
}
}import org.apache.commons.lang3.StringUtils;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.TrustManagerFactory;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.security.KeyStore;
public class SSLUtils {
public static void write(String message, Socket sslSocket) throws Exception {
OutputStream out = sslSocket.getOutputStream();
byte[] messageBytes = message.getBytes(StandardCharsets.UTF_8);
out.write(messageBytes, 0, messageBytes.length);
out.flush();
}
public static String read(Socket sslSocket) throws Exception {
InputStream in = sslSocket.getInputStream();
byte[] buffer = new byte[50];
in.read(buffer);
return new String(buffer);
}
public static KeyManagerFactory creatKey(String keystorePath, char[] keystorePass) throws Exception {
if (StringUtils.isEmpty(keystorePath)) {
return null;
}
KeyManagerFactory kmf = KeyManagerFactory.getInstance("sunx509");
kmf.init(loadKeyStore(keystorePath, keystorePass), keystorePass);
return kmf;
}
public static TrustManagerFactory creatTrustJks(String trustClientKeystorePath, char[] keystorePass) throws Exception {
if (StringUtils.isEmpty(trustClientKeystorePath)) {
return null;
}
TrustManagerFactory tmf = TrustManagerFactory.getInstance("sunx509");
tmf.init(loadKeyStore(trustClientKeystorePath, keystorePass));
return tmf;
}
private static KeyStore loadKeyStore(String keystorePath, char[] keystorePass) throws Exception {
KeyStore serverKeyStore = KeyStore.getInstance(StringUtils.substringAfterLast(keystorePath, "."));
serverKeyStore.load(new FileInputStream(keystorePath), keystorePass);
return serverKeyStore;
}
}启动 SSLServer 和 SSLClient 可以得到的结果如下所示：
使用 wireshark 抓包如下所示：
这就是对应的 SSL 连接
读到这里，这篇“怎么通过Java实现SSL交互功能”文章已经介绍完毕，想要掌握这篇文章的知识点还需要大家自己动手实践使用过才能领会，如果想了解更多相关内容的文章，欢迎关注亿速云行业资讯频道。
免责声明：本站发布的内容（图片、视频和文字）以原创、转载和分享为主，文章观点不代表本网站立场，如果涉及侵权请联系站长邮箱：is@yisu.com进行举报，并提供相关证据，一经查实，将立刻删除涉嫌侵权内容。
