此HTTPS连接是否安全？

Question

我正在寻找一种方法来从服务器端使用Https和自签名证书来检索数据。以下这个问题：

Self-signed SSL acceptance on Android

和@布赖恩Yarger答案我有这样的：

EasySSLSocketFactory：

public class EasySSLSocketFactory implements SocketFactory, LayeredSocketFactory { 

private SSLContext sslcontext = null; 

private static SSLContext createEasySSLContext() throws IOException { 
    try { 
     SSLContext context = SSLContext.getInstance("TLS"); 
     context.init(null, new TrustManager[] { new EasyX509TrustManager(null) }, null); 
     return context; 
    } catch (Exception e) { 
     throw new IOException(e.getMessage()); 
    } 
} 

private SSLContext getSSLContext() throws IOException { 
    if (this.sslcontext == null) { 
     this.sslcontext = createEasySSLContext(); 
    } 
    return this.sslcontext; 
} 

/** 
* @see org.apache.http.conn.scheme.SocketFactory#connectSocket(java.net.Socket, java.lang.String, int, 
*  java.net.InetAddress, int, org.apache.http.params.HttpParams) 
*/ 
public Socket connectSocket(Socket sock, String host, int port, InetAddress localAddress, int localPort, 
     HttpParams params) throws IOException, UnknownHostException, ConnectTimeoutException { 
    int connTimeout = HttpConnectionParams.getConnectionTimeout(params); 
    int soTimeout = HttpConnectionParams.getSoTimeout(params); 
    InetSocketAddress remoteAddress = new InetSocketAddress(host, port); 
    SSLSocket sslsock = (SSLSocket) ((sock != null) ? sock : createSocket()); 

    if ((localAddress != null) || (localPort > 0)) { 
     // we need to bind explicitly 
     if (localPort < 0) { 
      localPort = 0; // indicates "any" 
     } 
     InetSocketAddress isa = new InetSocketAddress(localAddress, localPort); 
     sslsock.bind(isa); 
    } 

    sslsock.connect(remoteAddress, connTimeout); 
    sslsock.setSoTimeout(soTimeout); 
    return sslsock; 

} 

/** 
* @see org.apache.http.conn.scheme.SocketFactory#createSocket() 
*/ 
public Socket createSocket() throws IOException { 
    return getSSLContext().getSocketFactory().createSocket(); 
} 

/** 
* @see org.apache.http.conn.scheme.SocketFactory#isSecure(java.net.Socket) 
*/ 
public boolean isSecure(Socket socket) throws IllegalArgumentException { 
    return true; 
} 

/** 
* @see org.apache.http.conn.scheme.LayeredSocketFactory#createSocket(java.net.Socket, java.lang.String, int, 
*  boolean) 
*/ 
public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, 
     UnknownHostException { 
    return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose); 
} 

// ------------------------------------------------------------------- 
// javadoc in org.apache.http.conn.scheme.SocketFactory says : 
// Both Object.equals() and Object.hashCode() must be overridden 
// for the correct operation of some connection managers 
// ------------------------------------------------------------------- 

public boolean equals(Object obj) { 
    return ((obj != null) && obj.getClass().equals(EasySSLSocketFactory.class)); 
} 

public int hashCode() { 
    return EasySSLSocketFactory.class.hashCode(); 
} 
} 

EasyX509TrustManager：

public class EasyX509TrustManager implements X509TrustManager { 

private X509TrustManager standardTrustManager = null; 

/** 
* Constructor for EasyX509TrustManager. 
*/ 
public EasyX509TrustManager(KeyStore keystore) throws NoSuchAlgorithmException, KeyStoreException { 
    super(); 
    TrustManagerFactory factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm()); 
    factory.init(keystore); 
    TrustManager[] trustmanagers = factory.getTrustManagers(); 
    if (trustmanagers.length == 0) { 
     throw new NoSuchAlgorithmException("no trust manager found"); 
    } 
    this.standardTrustManager = (X509TrustManager) trustmanagers[0]; 
} 

/** 
* @see javax.net.ssl.X509TrustManager#checkClientTrusted(X509Certificate[],String authType) 
*/ 
public void checkClientTrusted(X509Certificate[] certificates, String authType) throws CertificateException { 
    standardTrustManager.checkClientTrusted(certificates, authType); 
} 

/** 
* @see javax.net.ssl.X509TrustManager#checkServerTrusted(X509Certificate[],String authType) 
*/ 
public void checkServerTrusted(X509Certificate[] certificates, String authType) throws CertificateException { 
    if ((certificates != null) && (certificates.length == 1)) { 
     certificates[0].checkValidity(); 
    } else { 
     standardTrustManager.checkServerTrusted(certificates, authType); 
    } 
} 

/** 
* @see javax.net.ssl.X509TrustManager#getAcceptedIssuers() 
*/ 
public X509Certificate[] getAcceptedIssuers() { 
    return this.standardTrustManager.getAcceptedIssuers(); 
} 
} 

我加入这个方法：getNewHttpClient（）

public static HttpClient getNewHttpClient() { 
    try { 
     KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType()); 
     trustStore.load(null, null); 

     SSLSocketFactory sf = new MySSLSocketFactory(trustStore); 
     sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); 

     HttpParams params = new BasicHttpParams(); 
     HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1); 
     HttpProtocolParams.setContentCharset(params, HTTP.UTF_8); 

     SchemeRegistry registry = new SchemeRegistry(); 
     registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80)); 
     registry.register(new Scheme("https", sf, 443)); 

     ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry); 

     return new DefaultHttpClient(ccm, params); 
    } catch (Exception e) { 
     return new DefaultHttpClient(); 
    } 
} 

最后在我的代码，每一个地方，我有：

HttpClient client = getNewHttpClient(); 

：

DefaultHttpClient client = new DefaultHttpClient(); 

我代之以

我现在可以从服务器端接收数据。

问题：是我做的是安全的吗？或者它接受任何自签名证书？如果是这种情况，应该做些什么来改变它？

任何帮助，将不胜感激。

Answer 1

您可以捕获数据包并检查读取数据包，如果连接是安全的，然后包会在编码格式其他明智的，你可以得到的解码器插件来读取数据包

Answer 2

没有同行与信任管理器可以可能是安全的。您所做的只是检查提供自签名证书的服务器是否可信，是为了检查证书的有效性。这是不够的。你开放中间人攻击。