X509TrustManager - Google界面的不安全实现

Question

当我试图上传一个应用程序到google play时，我会收到一条消息。“接口x509trustmanager的不安全实现”。在Google Play的一条信息中，它说：

为了避免验证SSL证书时出现问题，请更改

接口中的checkServerTrusted方法的代码，以便在检测到可疑证书时抛出CertificateException或IllegalArgumentException。

我找到的所有选项都使用checkValidity方法来验证证书，但是Google还添加了：

不使用checkValidity验证服务器的证书。此方法检查证书的有效性，而不是其安全性。

如何正确地更改checkServerTrusted方法的代码？我当前实现的x509TrustManager：

X509TrustManager trustManager = new X509TrustManager() {
        @Override
        public X509Certificate[] getAcceptedIssuers() {
            X509Certificate[] cArrr = new X509Certificate[0];
            return cArrr;
        }

        @Override
        public void checkServerTrusted(final X509Certificate[] chain,
                                       final String authType) throws CertificateException {
            try {
                chain[0].checkValidity();
            } catch (Exception e) {
                throw new CertificateException("Certificate not valid or trusted.");
            }
        }

        @Override
        public void checkClientTrusted(final X509Certificate[] chain,
                                       final String authType) throws CertificateException {
        }
    };

Answer 1

我以这种方式更改了X509TrustManager实现，该应用程序通过了Google验证：

TrustManager[] victimizedManager = new TrustManager[]{

                new X509TrustManager() {

                    public X509Certificate[] getAcceptedIssuers() {

                        X509Certificate[] myTrustedAnchors = new X509Certificate[0];

                        return myTrustedAnchors;
                    }

                    @Override
                    public void checkClientTrusted(X509Certificate[] certs, String authType) {
                    }

                    @Override
                    public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                        if(chain == null || chain.length == 0)throw new IllegalArgumentException("Certificate is null or empty");
                        if(authType == null || authType.length() == 0) throw new IllegalArgumentException("Authtype is null or empty");
                        if(!authType.equalsIgnoreCase("ECDHE_RSA") &&
                                !authType.equalsIgnoreCase("ECDHE_ECDSA") &&
                                !authType.equalsIgnoreCase("RSA") &&
                                !authType.equalsIgnoreCase("ECDSA")) throw new CertificateException("Certificate is not trust");
                        try {
                            chain[0].checkValidity();
                        } catch (Exception e) {
                            throw new CertificateException("Certificate is not valid or trusted");
                        }
                    }
                }
        };

Answer 2

我以前也犯过这个错误。在我的例子中，这就是解决它的方法：

private boolean isVerified;

@SuppressLint("TrulyRandom")
public static void handleSSLHandshake() {
    try {
        TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
            public X509Certificate[] getAcceptedIssuers() {
                return new X509Certificate[0];
            }

            @Override
            public void checkClientTrusted(X509Certificate[] certs, String authType) {
            }

            @Override
            public void checkServerTrusted(X509Certificate[] certs, String authType) {
            }
        }};

        SSLContext sc = SSLContext.getInstance("TLS");
        sc.init(null, trustAllCerts, new SecureRandom());
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
        HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
            @Override
            public boolean verify(final String host, final SSLSession session) {
                System.out.print("host" + host+ "\n");
                isVerified = host.equalsIgnoreCase(Constants.hostNameVerifierString)
                        || host.contains("google") || host.contains("gstatic");

                System.out.print(isVerified);
                return isVerified;
            }
        });
    } catch (Exception ignored) {
    }
}

在有网络调用的活动中，可以调用handleSSLHandshake()方法。或者，如果您使用Dagger或任何依赖项注入库，您应该能够将它注入到您想要创建的网络调用的任何位置。

Constants.hostNameVerifierString是我在网络调用中使用的URL，添加" google“和"gstatic”是因为我也在使用google地图。