android https安全连接

转载

wx5aae83353cec4 2022-11-29 15:08:53

文章标签 ide java android 文章分类 虚拟化云计算

如果不需要验证服务器端证书，直接照这里做

[java] view plain copy

public class Demo extends Activity {
/** Called when the activity is first created. */
private TextView text;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
text = (TextView)findViewById(R.id.text);
GetHttps();
}
private void GetHttps(){
" https://800wen.com/";
try{
"TLS");
null, new TrustManager[]{new MyTrustManager()}, new SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
new MyHostnameVerifier());
new URL(https).openConnection();
true);
true);
conn.connect();
new BufferedReader(new InputStreamReader(conn.getInputStream()));
new StringBuffer();
String line;
while ((line = br.readLine()) != null)
sb.append(line);
text.setText(sb.toString());
catch(Exception e){
this.getClass().getName(), e.getMessage());
}
}
private class MyHostnameVerifier implements HostnameVerifier{
@Override
public boolean verify(String hostname, SSLSession session) {
// TODO Auto-generated method stub
return true;
}
}
private class MyTrustManager implements X509TrustManager{
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
// TODO Auto-generated method stub
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
// TODO Auto-generated method stub
}
@Override
public X509Certificate[] getAcceptedIssuers() {
// TODO Auto-generated method stub
return null;
}
}
}

如果需要验证服务器端证书

（这样能够防钓鱼），我是这样做的，还有些问题问大牛：

a. 导出公钥。在浏览器上用https访问tomcat，查看其证书，并另存为一个文件(存成了X.509格式：xxxx.cer)

b. 导入公钥。把xxxx.cer放在Android的assets文件夹中，以方便在运行时通过代码读取此证书，留了两个问题给大牛：

[java] view plain copy

AssetManager am = context.getAssets();
InputStream ins = am.open("robusoft.cer");
try {
//读取证书
"X.509"); //问1
Certificate cer = cerFactory.generateCertificate(ins);
//创建一个证书库，并将证书导入证书库
"PKCS12", "BC"); //问2
null, null);
"trust", cer);
return keyStore;
} finally {
ins.close();
}
//把咱的证书库作为信任证书库
SSLSocketFactory socketFactory = new SSLSocketFactory(keystore);
Scheme sch = new Scheme("https", socketFactory, 443);
//完工
HttpClient mHttpClient = new DefaultHttpClient();
mHttpClient.getConnectionManager().getSchemeRegistry().register(sch);

问1：这里用"PKCS12"不行

答1：PKCS12和JKS是keystore的type，不是Certificate的type，所以X.509不能用PKCS12代替

问2：这里用"JKS"不行。

答2：android平台上支持的keystore type好像只有PKCS12，不支持JKS，所以不能用JKS代替在PKCS12，不过在windows平台上是可以代替的

----------------------------------------------分割线-------------------------------------------------------------------------

1。数据通信时加密，不同平台加密后的结果不同，用的库不同吧（进行相应的修改比较麻烦）

2。采用https，系统自动做好了，简单一些

https与http的通信，在我看来主要的区别在于https多了一个安全验证机制，而Android采用的是X509验证，首先我们需要这重写X509类，建立我们的验证规则、、不过对于特定的项目，我们一般都是无条件信任服务端的，因此我们可以对任何证书都无条件信任（其实本质上我们只是信任了特定url的证书，为了偷懒，才那么选择的）/**

* 信任所有主机-对于任何证书都不做检查
*/
class MytmArray implements X509TrustManager {
public X509Certificate[] getAcceptedIssuers() {
// return null;
return new X509Certificate[] {};
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
// TODO Auto-generated method stub
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
// TODO Auto-generated method stub
// System.out.println("cert: " + chain[0].toString() + ", authType: "
// + authType);
}
};

[java] view plain copy

* 信任所有主机-对于任何证书都不做检查
*/
class MytmArray implements X509TrustManager {
public X509Certificate[] getAcceptedIssuers() {
// return null;
return new X509Certificate[] {};
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
// TODO Auto-generated method stub
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
// TODO Auto-generated method stub
// System.out.println("cert: " + chain[0].toString() + ", authType: "
// + authType);
}
};

好了，我们写好了信任规则，接下载就要创建一个主机的信任列表

static TrustManager[] xtmArray = new MytmArray[] { new MytmArray() };
/**
* 信任所有主机-对于任何证书都不做检查
*/
private static void trustAllHosts() {
// Create a trust manager that does not validate certificate chains
// Android 采用X509的证书信息机制
// Install the all-trusting trust manager
try {
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, xtmArray, new java.security.SecureRandom());
HttpsURLConnection
.setDefaultSSLSocketFactory(sc.getSocketFactory());
// HttpsURLConnection.setDefaultHostnameVerifier(DO_NOT_VERIFY);//
// 不进行主机名确认
} catch (Exception e) {
e.printStackTrace();
}
}
static HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
// TODO Auto-generated method stub
// System.out.println("Warning: URL Host: " + hostname + " vs. "
// + session.getPeerHost());
return true;
}
};