Android實現ssl雙向驗證
阿新 • • 發佈：2018-12-27
Android實現雙向驗證
前言
- Android端實現雙向認證的難點主要在於Android接受的證書格式是BKS，而一般提供的證書不包含此格式,需要手動轉換
- 轉換之後如果請求不了，表現為握手失敗（Handshake failed），則一般是證書轉換錯誤
- 網上有一大堆轉換方法，有的雖能正常生成BKS證書，但還是導致握手失敗，推測應該還是轉換方式有誤
- 在這裡提供一種自己親自試驗過能正常轉換的方法供大家參考
證書轉換
使用轉換工具
- 在這裡提供一個比較好用的轉換工具Portecle
- 下載完後解壓雙擊start.bat即可使用，至於詳細使用請自行百度
- 使用此工具可以很方便地將jks轉為bks
通過openssl和keytool轉換
- openssl可以到官網下載,openssl暫時沒有windows版，大夥可以在此處下載Win32OpenSSLwindows版本
- 下載完記得配置環境變數，同時也記得配置jdk的環境變數，因為後面需要用到keytool命令
- 現在假設你拿到了客戶端證書client.crt和client.key（或者client.pem和client.key）
通過以下命令生成pfx檔案,期間會讓輸入密碼，輸入你想要的密碼即可，假如這裡輸入的是123456
openssl pkcs12 -export -out client.pfx -inkey client.key -in client.pem
或者
openssl pkcs12 -export -out client.pfx -inkey client.key -in client.crt執行成功則可以看到client.pfx檔案，接著再執行如下命令
keytool -importkeystore -srckeystore client.pfx -destkeystore client.jks -srcstoretype PKCS12 -deststoretype JKS
- 執行成功即可看到生成了client.jks
- 拿到生成的jks就可以通過Portecle工具轉換成bks了
程式碼實現
SSLHelper.java
import android.content.Context;
import java.io.IOException;
import - HttpsUtil.java
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;
public class HttpsUtil {
public static class SSLParams
{
public SSLSocketFactory sSLSocketFactory;
public X509TrustManager trustManager;
}
public static SSLParams getSslSocketFactory(InputStream[] certificates, InputStream bksFile, String password)
{
SSLParams sslParams = new SSLParams();
try
{
TrustManager[] trustManagers = prepareTrustManager(certificates);
KeyManager[] keyManagers = prepareKeyManager(bksFile, password);
SSLContext sslContext = SSLContext.getInstance("TLS");
X509TrustManager trustManager = null;
if (trustManagers != null)
{
trustManager = new MyTrustManager(chooseTrustManager(trustManagers));
} else
{
trustManager = new UnSafeTrustManager();
}
sslContext.init(keyManagers, new TrustManager[]{trustManager},null);
sslParams.sSLSocketFactory = sslContext.getSocketFactory();
sslParams.trustManager = trustManager;
return sslParams;
} catch (NoSuchAlgorithmException e)
{
throw new AssertionError(e);
} catch (KeyManagementException e)
{
throw new AssertionError(e);
} catch (KeyStoreException e)
{
throw new AssertionError(e);
}
}
public static class UnSafeHostnameVerifier implements HostnameVerifier
{
@Override
public boolean verify(String hostname, SSLSession session)
{
return true;
}
}
public static class UnSafeTrustManager implements X509TrustManager
{
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException
{
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException
{
}
@Override
public X509Certificate[] getAcceptedIssuers()
{
return new X509Certificate[]{};
}
}
private static TrustManager[] prepareTrustManager(InputStream... certificates)
{
if (certificates == null || certificates.length <= 0) return null;
try
{
CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
keyStore.load(null);
int index = 0;
for (InputStream certificate : certificates)
{
String certificateAlias = Integer.toString(index++);
keyStore.setCertificateEntry(certificateAlias, certificateFactory.generateCertificate(certificate));
try
{
if (certificate != null)
certificate.close();
} catch (IOException e)
{
}
}
TrustManagerFactory trustManagerFactory = null;
trustManagerFactory = TrustManagerFactory.
getInstance(TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(keyStore);
TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
return trustManagers;
} catch (NoSuchAlgorithmException e)
{
e.printStackTrace();
} catch (CertificateException e)
{
e.printStackTrace();
} catch (KeyStoreException e)
{
e.printStackTrace();
} catch (Exception e)
{
e.printStackTrace();
}
return null;
}
private static KeyManager[] prepareKeyManager(InputStream bksFile, String password)
{
try
{
if (bksFile == null || password == null) return null;
KeyStore clientKeyStore = KeyStore.getInstance("BKS");
clientKeyStore.load(bksFile, password.toCharArray());
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
keyManagerFactory.init(clientKeyStore, password.toCharArray());
return keyManagerFactory.getKeyManagers();
} catch (KeyStoreException e)
{
e.printStackTrace();
} catch (NoSuchAlgorithmException e)
{
e.printStackTrace();
} catch (UnrecoverableKeyException e)
{
e.printStackTrace();
} catch (CertificateException e)
{
e.printStackTrace();
} catch (IOException e)
{
e.printStackTrace();
} catch (Exception e)
{
e.printStackTrace();
}
return null;
}
private static X509TrustManager chooseTrustManager(TrustManager[] trustManagers)
{
for (TrustManager trustManager : trustManagers)
{
if (trustManager instanceof X509TrustManager)
{
return (X509TrustManager) trustManager;
}
}
return null;
}
private static class MyTrustManager implements X509TrustManager
{
private X509TrustManager defaultTrustManager;
private X509TrustManager localTrustManager;
public MyTrustManager(X509TrustManager localTrustManager) throws NoSuchAlgorithmException, KeyStoreException
{
TrustManagerFactory var4 = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
var4.init((KeyStore) null);
defaultTrustManager = chooseTrustManager(var4.getTrustManagers());
this.localTrustManager = localTrustManager;
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException
{
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException
{
try
{
defaultTrustManager.checkServerTrusted(chain, authType);
} catch (CertificateException ce)
{
localTrustManager.checkServerTrusted(chain, authType);
}
}
@Override
public X509Certificate[] getAcceptedIssuers()
{
return new X509Certificate[0];
}
}
} - retrofit呼叫
//建立日誌攔截器，用於日誌列印
HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
//建立okhttp
OkHttpClient httpClient = new OkHttpClient().newBuilder()
.addInterceptor(interceptor)
.sslSocketFactory(SSLHelper.getSSLCertifcation(this), new HttpsUtil.UnSafeTrustManager())
.hostnameVerifier(new HttpsUtil.UnSafeHostnameVerifier())//由於還沒有域名，此處設定忽略掉域名校驗
.build();
//建立retrofit
String baseUrl = "https://180.101.147.89:8743/";
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(baseUrl)
.client(httpClient)
//.addConverterFactory(GsonConverterFactory.create())
.addConverterFactory(ScalarsConverterFactory.create())
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.build();- 順便貼下依賴build.gradle
apply plugin: 'com.android.application'
android {
...
}
dependencies {
...
//retrofit
implementation "com.squareup.retrofit2:retrofit:2.3.0"
implementation "com.squareup.retrofit2:converter-scalars:2.3.0"
implementation "com.squareup.retrofit2:converter-gson:2.3.0"
implementation "com.squareup.okhttp3:logging-interceptor:3.8.1"
}