首先創建服務器端私有密鑰和公共密鑰
1, keytool -genkey -alias serverkey -keystore kserver.ks
密碼: serverpass
2, keytool -export -alias serverkey -keystore kserver.ks -file server.crt
3, keytool -import -alias serverkey -file server.crt -keystore tclient.ks
密碼: clientpublicpass
下面創建客戶器端私有密鑰和公共密鑰
1, keytool -genkey -alias clientkey -keystore kclient.ks
密碼: clientpass
2, keytool -export -alias clientkey -keystore kclient.ks -file client.crt
3, keytool -import -alias clientkey -file client.crt -keystore tserver.ks
密碼: serverpublicpass
把服務器端產生的公共密鑰放到客戶端, 同樣把客戶端創建的公共密鑰放到服務器端.
下面是服務器端代碼:
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.security.KeyStore;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLServerSocket;
import javax.net.ssl.TrustManagerFactory;
public class SSLTestServer {
public static void main(String[] args) throws Exception {
SSLContext ctx = SSLContext.getInstance("SSL");
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
KeyStore ks = KeyStore.getInstance("JKS");
KeyStore tks = KeyStore.getInstance("JKS");
ks.load(new FileInputStream("cert/kserver.ks"), "serverpass".toCharArray());
tks.load(new FileInputStream("cert/tserver.ks"), "serverpublicpass".toCharArray());
kmf.init(ks, "serverpass".toCharArray());
tmf.init(tks);
ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
SSLServerSocket serverSocket = (SSLServerSocket) ctx.getServerSocketFactory().createServerSocket(8443);
serverSocket.setNeedClientAuth(true);
while (true) {
try {
Socket s = serverSocket.accept();
InputStream input = s.getInputStream();
OutputStream utput = s.getOutputStream();
BufferedInputStream bis = new BufferedInputStream(input);
BufferedOutputStream bos = new BufferedOutputStream(output);
byte[] buffer = new byte[20];
int length = bis.read(buffer);
System.out.println("Receive: " + new String(buffer, 0, length).toString());
bos.write("Hello".getBytes());
bos.flush();
s.close();
} catch (Exception e) {
System.out.println(e);
}
}
}
}
下面是客戶端代碼:
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.KeyStore;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManagerFactory;
public class SSLTestClient {
public static void main(String[] args) throws Exception {
SSLContext ctx = SSLContext.getInstance("SSL");
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
KeyStore ks = KeyStore.getInstance("JKS");
KeyStore tks = KeyStore.getInstance("JKS");
ks.load(new FileInputStream("cert/kclient.ks"), "clientpass".toCharArray());
tks.load(new FileInputStream("cert/tclient.ks"), "clientpublicpass".toCharArray());
kmf.init(ks, "clientpass".toCharArray());
tmf.init(tks);
ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
SSLSocket sslSocket = (SSLSocket) ctx.getSocketFactory().createSocket("localhost", 8443);
InputStream input = sslSocket.getInputStream();
OutputStream utput = sslSocket.getOutputStream();
BufferedInputStream bis = new BufferedInputStream(input);
BufferedOutputStream bos = new BufferedOutputStream(output);
bos.write("Hello".getBytes());
bos.flush();
byte[] buffer = new byte[20];
int length = bis.read(buffer);
System.out.println(new String(buffer, 0, length));
sslSocket.close();
}
}
常見的HTTPS傳輸, 不需要進行客戶端認證, 也就是單向認證. 這時也就不需要創建客戶端的私鑰和公鑰. 服務器端也只要配置一下服務器端的私鑰即可, 當客戶端瀏覽器訪問時會生成一個證書文件,類似於上面創建的crt文件. 如果需要程序訪問,可以通過這個crt文件生成一個keystore. 然后是用這個keystore作為trust keystore即可.
目前我用keytool.exe生成的keystore和證書用於雙向認證是沒有問題的，但是使用ejbca系統生成的由某CA機構頒發的證書以及生成的keystore用來做雙向認證就會報錯。
javax.net.ssl.SSLHandshakeException: null cert chain
這個問題還需要進一步跟蹤解決。