javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0xb7d84e10: Failure in SSL library解决

本文介绍了一个自定义的SSL套接字工厂类,用于解决Android应用中出现的SSL握手异常问题,通过禁用不安全的SSL协议版本和选择合理的密钥交换套件来提升安全性。
异常信息
04-22 18:55:30.661 3949-3949/com.umeng.soexample.liuhao20190422 I/aaaa: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0xb7d84e10: Failure in SSL library, usually a protocol error
    error:14077102:SSL routines:SSL23_GET_SERVER_HELLO:unsupported protocol (external/openssl/ssl/s23_clnt.c:714 0x96f15926:0x00000000)



//写一个类继承SSLSocket
public class SSL extends SSLSocketFactory {
    private SSLSocketFactory defaultFactory;
    // Android 5.0+ (API level21) provides reasonable default settings
    // but it still allows SSLv3
    // https://developer.android.com/about/versions/android-5.0-changes.html#ssl
    static String protocols[] = null, cipherSuites[] = null;

    static {
        try {
            SSLSocket socket = (SSLSocket) SSLSocketFactory.getDefault().createSocket();
            if (socket != null) {
                /* set reasonable protocol versions */
                // - enable all supported protocols (enables TLSv1.1 and TLSv1.2 on Android <5.0)
                // - remove all SSL versions (especially SSLv3) because they're insecure now
                List<String> protocols = new LinkedList<>();
                for (String protocol : socket.getSupportedProtocols())
                    if (!protocol.toUpperCase().contains("SSL"))
                        protocols.add(protocol);
                SSL.protocols = protocols.toArray(new String[protocols.size()]);
                /* set up reasonable cipher suites */
                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
                    // choose known secure cipher suites
                    List<String> allowedCiphers = Arrays.asList(
                            // TLS 1.2
                            "TLS_RSA_WITH_AES_256_GCM_SHA384",
                            "TLS_RSA_WITH_AES_128_GCM_SHA256",
                            "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
                            "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
                            "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
                            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
                            "TLS_ECHDE_RSA_WITH_AES_128_GCM_SHA256",
                            // maximum interoperability
                            "TLS_RSA_WITH_3DES_EDE_CBC_SHA",
                            "TLS_RSA_WITH_AES_128_CBC_SHA",
                            // additionally
                            "TLS_RSA_WITH_AES_256_CBC_SHA",
                            "TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA",
                            "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA",
                            "TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA",
                            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA");
                    List<String> availableCiphers = Arrays.asList(socket.getSupportedCipherSuites());
                    // take all allowed ciphers that are available and put them into preferredCiphers
                    HashSet<String> preferredCiphers = new HashSet<>(allowedCiphers);
                    preferredCiphers.retainAll(availableCiphers);
                    /* For maximum security, preferredCiphers should *replace* enabled ciphers (thus disabling
                     * ciphers which are enabled by default, but have become unsecure), but I guess for
                     * the security level of DAVdroid and maximum compatibility, disabling of insecure
                     * ciphers should be a server-side task */
                    // add preferred ciphers to enabled ciphers
                    HashSet<String> enabledCiphers = preferredCiphers;
                    enabledCiphers.addAll(new HashSet<>(Arrays.asList(socket.getEnabledCipherSuites())));
                    SSL.cipherSuites = enabledCiphers.toArray(new String[enabledCiphers.size()]);
                }
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public SSL(X509TrustManager tm) {
        try {
            SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, (tm != null) ? new X509TrustManager[]{tm} : null, null);
            defaultFactory = sslContext.getSocketFactory();
        } catch (GeneralSecurityException e) {
            throw new AssertionError(); // The system has no TLS. Just give up.
        }
    }

    private void upgradeTLS(SSLSocket ssl) {
        // Android 5.0+ (API level21) provides reasonable default settings
        // but it still allows SSLv3
        // https://developer.android.com/about/versions/android-5.0-changes.html#ssl
        if (protocols != null) {
            ssl.setEnabledProtocols(protocols);
        }
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP && cipherSuites != null) {
            ssl.setEnabledCipherSuites(cipherSuites);
        }
    }

    @Override public String[] getDefaultCipherSuites() {
        return cipherSuites;
    }

    @Override
    public String[] getSupportedCipherSuites() {
        return cipherSuites;
    }

    @Override
    public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException {
        Socket ssl = defaultFactory.createSocket(s, host, port, autoClose);
        if (ssl instanceof SSLSocket){
            upgradeTLS((SSLSocket) ssl);
        }
        return ssl;
    }

    @Override
    public Socket createSocket(String host, int port) throws IOException, UnknownHostException {
        Socket ssl = defaultFactory.createSocket(host, port);
        if (ssl instanceof SSLSocket){
            upgradeTLS((SSLSocket) ssl);
        }
        return ssl;
    }

    @Override
    public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException, UnknownHostException {
        Socket ssl = defaultFactory.createSocket(host, port, localHost, localPort);
        if (ssl instanceof SSLSocket) {
            upgradeTLS((SSLSocket) ssl);
        }
        return ssl;
    }

    @Override
    public Socket createSocket(InetAddress host, int port) throws IOException {
        Socket ssl = defaultFactory.createSocket(host, port);
        if (ssl instanceof SSLSocket) {
            upgradeTLS((SSLSocket) ssl);
        }
        return ssl;
    }

    @Override public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException {
        Socket ssl = defaultFactory.createSocket(address, port, localAddress, localPort);
        if (ssl instanceof SSLSocket){
            upgradeTLS((SSLSocket) ssl);
        }
        return ssl;
    }
}
//定义一个信任所有证书的TrustManager
final X509TrustManager trustAllCert = new X509TrustManager() {
    @Override
    public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
    }

    @Override
    public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
    }

    @Override
    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
        return new java.security.cert.X509Certificate[]{};
    }
};
OkHttpClient client = new OkHttpClient.Builder()
        .sslSocketFactory(new SSL(trustAllCert), trustAllCert)
        .hostnameVerifier(new HostnameVerifier() {             @Override
             public boolean verify(String s, SSLSession sslSession) {
                return true;
             }
         }).build();
`javax.net.ssl.SSLProtocolException: handshake alert: unrecognized_name` 错误通常是由于客户端在 SSL/TLS 握手过程中发送了一个服务器无法识别的 SNI(Server Name Indication)扩展导致的。以下是一些可能的解决方法: ### 禁用 SNI 如果服务器不支持 SNI,可以在客户端代码中禁用 SNI。以下是一个 Java 示例: ```java import javax.net.ssl.HttpsURLConnection; import javax.net.ssl.SSLContext; import javax.net.ssl.SSLParameters; import java.io.IOException; import java.net.URL; public class DisableSNIExample { public static void main(String[] args) throws Exception { URL url = new URL("https://your-url.com"); HttpsURLConnection conn = (HttpsURLConnection) url.openConnection(); SSLContext sslContext = SSLContext.getInstance("TLS"); sslContext.init(null, null, null); SSLParameters sslParameters = new SSLParameters(); sslParameters.setServerNames(null); // 禁用 SNI conn.setSSLSocketFactory(sslContext.getSocketFactory()); conn.setSSLParameters(sslParameters); try { conn.connect(); System.out.println("Connected successfully"); } catch (IOException e) { e.printStackTrace(); } } } ``` ### 升级 JDK 版本 较新的 JDK 版本可能会修复一些与 SNI 相关的问题。可以尝试将 JDK 升级到最新的稳定版本。 ### 检查服务器配置 确保服务器端正确配置了 SNI 支持。如果服务器不支持 SNI,可能需要联系服务器管理员进行相应的配置调整。 ### 检查域名和证书 确保使用的域名和证书是正确的,并且证书没有过期或存在其他问题。 ### 指定 TLS 版本 类似于解决 `SSLHandshakeException` 的方法,可以尝试指定使用的 TLS 版本: ```java import org.apache.http.client.HttpClient; import org.apache.http.conn.ssl.NoopHostnameVerifier; import org.apache.http.conn.ssl.SSLConnectionSocketFactory; import org.apache.http.conn.ssl.TrustSelfSignedStrategy; import org.apache.http.impl.client.HttpClients; import org.apache.http.ssl.SSLContexts; import javax.net.ssl.SSLContext; import java.security.KeyManagementException; import java.security.KeyStoreException; import java.security.NoSuchAlgorithmException; public class SpecifyTLSVersionExample { public static HttpClient getHttpClient() throws KeyManagementException, NoSuchAlgorithmException, KeyStoreException { SSLContext sslContext = SSLContexts.custom() .loadTrustMaterial(null, new TrustSelfSignedStrategy()) .build(); SSLConnectionSocketFactory scsf = new SSLConnectionSocketFactory( sslContext, new String[]{"TLSv1.2"}, null, NoopHostnameVerifier.INSTANCE ); return HttpClients.custom() .setSSLSocketFactory(scsf) .build(); } } ```
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