Related
I am implementing ssl pinning in my app and i use leaf node certificate which is for my website in certificate hierarchy.
val certificatePinner = CertificatePinner.Builder()
.add(
BuildConfig.DOMAIN,
Constants.SHA256_HASH
)
okHttpClientBuilder.certificatePinner(certificatePinner.build())
.build()
This works perfect until the certificate remains the same.
but the main problem is keeping the app up to date with SHA256 hash as the certificate expires every 3 months.
If i miss on updating the new SHA256 hash, app stops working due to certificate mismatch.
Is there any way to avoid this situation.
Thanks in advance.
using SHA hash of Root certificate solved my problem as it has a longer life
I had to manage a similar situation: I had to implement certificate pinning and I don't want to synchronize app release with certificate expiration.
The solution (is a compromise I know) I implemented works in this way: if certificate app use is still valid, the app applies the certificate pinning. If the certificate is expired, the app does not use certificate pinning. In this way, the app is "exposed with no certificate pinning" between the certificate expiration date and app update (with new certificate hashcode). During this period the app is exposed, but it continues to work!!
The code:
public abstract class CertificatePinnerManager {
private CertificatePinnerManager() {
}
public static final String DATE_FORMAT="dd/MM/yyyy";
public static final String CERTIFICATE_PINNING_END_CHECK = "12/09/2021";
public static final String CERTIFICATE_SHA_256 = "sha256/zzz/yyy/xxxx";
public static CertificatePinner generateCertificatePinner() {
#SuppressLint("SimpleDateFormat") SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT);
Date strDate = null;
try {
strDate = sdf.parse(CERTIFICATE_PINNING_END_CHECK);
} catch (ParseException e) {
e.printStackTrace();
}
if (new Date().before(strDate)) {
// Certificate pinning enabled
return new CertificatePinner.Builder()
// domain to check
.add("dummy.com", CERTIFICATE_SHA_256)
.build();
} else {
// disable certificate pinning
return new CertificatePinner.Builder().build();
}
}
}
// create okhttp client
OkHttpClient httpClient = new OkHttpClient.Builder()
.certificatePinner(CertificatePinnerManager.generateCertificatePinner())
.build()
I think it would a better solution manage certificate SHA with remote config, but for the moment, this is my solution. :D
I hope it will help you.
I am trying to connect to an IIS6 box running a godaddy 256bit SSL cert, and I am getting the error :
java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
Been trying to determine what could be causing that, but drawing blanks right now.
Here is how I am connecting :
HttpsURLConnection conn;
conn = (HttpsURLConnection) (new URL(mURL)).openConnection();
conn.setConnectTimeout(20000);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.connect();
String tempString = toString(conn.getInputStream());
Contrary to the accepted answer you do not need a custom trust manager, you need to fix your server configuration!
I hit the same problem while connecting to an Apache server with an incorrectly installed dynadot/alphassl certificate. I'm connecting using HttpsUrlConnection (Java/Android), which was throwing -
javax.net.ssl.SSLHandshakeException:
java.security.cert.CertPathValidatorException:
Trust anchor for certification path not found.
The actual problem is a server misconfiguration - test it with http://www.digicert.com/help/ or similar, and it will even tell you the solution:
"The certificate is not signed by a trusted authority (checking against Mozilla's root store). If you bought the certificate from a trusted authority, you probably just need to install one or more Intermediate certificates. Contact your certificate provider for assistance doing this for your server platform."
You can also check the certificate with openssl:
openssl s_client -debug -connect www.thedomaintocheck.com:443
You'll probably see:
Verify return code: 21 (unable to verify the first certificate)
and, earlier in the output:
depth=0 OU = Domain Control Validated, CN = www.thedomaintocheck.com
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 OU = Domain Control Validated, CN = www.thedomaintocheck.com
verify error:num=27:certificate not trusted
verify return:1
depth=0 OU = Domain Control Validated, CN = www.thedomaintocheck.com
verify error:num=21:unable to verify the first certificate`
The certificate chain will only contain 1 element (your certificate):
Certificate chain
0 s:/OU=Domain Control Validated/CN=www.thedomaintocheck.com
i:/O=AlphaSSL/CN=AlphaSSL CA - G2
... but should reference the signing authorities in a chain back to one which is trusted by Android (Verisign, GlobalSign, etc):
Certificate chain
0 s:/OU=Domain Control Validated/CN=www.thedomaintocheck.com
i:/O=AlphaSSL/CN=AlphaSSL CA - G2
1 s:/O=AlphaSSL/CN=AlphaSSL CA - G2
i:/C=BE/O=GlobalSign nv-sa/OU=Root CA/CN=GlobalSign Root CA
2 s:/C=BE/O=GlobalSign nv-sa/OU=Root CA/CN=GlobalSign Root CA
i:/C=BE/O=GlobalSign nv-sa/OU=Root CA/CN=GlobalSign Root CA
Instructions (and the intermediate certificates) for configuring your server are usually provided by the authority that issued your certificate, for example: http://www.alphassl.com/support/install-root-certificate.html
After installing the intermediate certificates provided by my certificate issuer I now have no errors when connecting using HttpsUrlConnection.
The solution of #Chrispix is dangerous! Trusting all certificates allows anybody to do a man in the middle attack! Just send ANY certificate to the client and it will accept it!
Add your certificate(s) to a custom trust manager like described in this post: Trusting all certificates using HttpClient over HTTPS
Although it is a bit more complex to establish a secure connection with a custom certificate, it will bring you the wanted ssl encryption security without the danger of man in the middle attack!
If you use retrofit, you need to customize your OkHttpClient.
retrofit = new Retrofit.Builder()
.baseUrl(ApplicationData.FINAL_URL)
.client(getUnsafeOkHttpClient().build())
.addConverterFactory(GsonConverterFactory.create())
.build();
Full code are as below.
public class RestAdapter {
private static Retrofit retrofit = null;
private static ApiInterface apiInterface;
public static OkHttpClient.Builder getUnsafeOkHttpClient() {
try {
// Create a trust manager that does not validate certificate chains
final TrustManager[] trustAllCerts = new TrustManager[]{
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[]{};
}
}
};
// Install the all-trusting trust manager
final SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
// Create an ssl socket factory with our all-trusting manager
final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
OkHttpClient.Builder builder = new OkHttpClient.Builder();
builder.sslSocketFactory(sslSocketFactory, (X509TrustManager) trustAllCerts[0]);
builder.hostnameVerifier(new HostnameVerifier() {
#Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
return builder;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static ApiInterface getApiClient() {
if (apiInterface == null) {
try {
retrofit = new Retrofit.Builder()
.baseUrl(ApplicationData.FINAL_URL)
.client(getUnsafeOkHttpClient().build())
.addConverterFactory(GsonConverterFactory.create())
.build();
} catch (Exception e) {
e.printStackTrace();
}
apiInterface = retrofit.create(ApiInterface.class);
}
return apiInterface;
}
}
You can trust particular certificate at runtime.
Just download it from server, put in assets and load like this using ssl-utils-android:
OkHttpClient client = new OkHttpClient();
SSLContext sslContext = SslUtils.getSslContextForCertificateFile(context, "BPClass2RootCA-sha2.cer");
client.setSslSocketFactory(sslContext.getSocketFactory());
In the example above I used OkHttpClient but SSLContext can be used with any client in Java.
If you have any questions feel free to ask. I'm the author of this small library.
Update based on latest Android documentation (March 2017):
When you get this type of error:
javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:374)
at libcore.net.http.HttpConnection.setupSecureSocket(HttpConnection.java:209)
at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:478)
at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:433)
at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:290)
at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:240)
at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:282)
at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:177)
at libcore.net.http.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:271)
the issue could be one of the following:
The CA that issued the server certificate was unknown
The server certificate wasn't signed by a CA, but was self signed
The server configuration is missing an intermediate CA
The solution is to teach HttpsURLConnection to trust a specific set of CAs. How? Please check https://developer.android.com/training/articles/security-ssl.html#CommonProblems
Others who are using AsyncHTTPClient from com.loopj.android:android-async-http library, please check Setup AsyncHttpClient to use HTTPS.
Replying to very old post. But maybe it will help some newbie and if non of the above works out.
Explanation: I know nobody wants explanation crap; rather the solution. But in one liner, you are trying to access a service from your local machine to a remote machine which does not trust your machine. You request need to gain the trust from remote server.
Solution: The following solution assumes that you have the following conditions met
Trying to access a remote api from your local machine.
You are building for Android app
Your remote server is under proxy filtration (you use proxy in your browser setting to access the remote api service, typically a staging or dev server)
You are testing on real device
Steps:
You need a .keystore extension file to signup your app. If you don't know how to create .keystore file; then follow along with the following section Create .keystore file or otherwise skip to next section Sign Apk File
Create .keystore file
Open Android Studio. Click top menu Build > Generate Signed APK. In the next window click the Create new... button. In the new window, please input in data in all fields. Remember the two Password field i recommend should have the same password; don't use different password; and also remember the save path at top most field Key store path:. After you input all the field click OK button.
Sign Apk File
Now you need to build a signed app with the .keystore file you just created. Follow these steps
Build > Clean Project, wait till it finish cleaning
Build > Generate Signed APK
Click Choose existing... button
Select the .keystore file we just created in the Create .keystore file section
Enter the same password you created while creating in Create .keystore file section. Use same password for Key store password and Key password fields. Also enter the alias
Click Next button
In the next screen; which might be different based on your settings in build.gradle files, you need to select Build Types and Flavors.
For the Build Types choose release from the dropdown
For Flavors however it will depends on your settings in build.gradle file. Choose staging from this field. I used the following settings in the build.gradle, you can use the same as mine, but make sure you change the applicationId to your package name
productFlavors {
staging {
applicationId "com.yourapplication.package"
manifestPlaceholders = [icon: "#drawable/ic_launcher"]
buildConfigField "boolean", "CATALYST_DEBUG", "true"
buildConfigField "boolean", "ALLOW_INVALID_CERTIFICATE", "true"
}
production {
buildConfigField "boolean", "CATALYST_DEBUG", "false"
buildConfigField "boolean", "ALLOW_INVALID_CERTIFICATE", "false"
}
}
Click the bottom two Signature Versions checkboxes and click Finish button.
Almost There:
All the hardwork is done, now the movement of truth. Inorder to access the Staging server backed-up by proxy, you need to make some setting in your real testing Android devices.
Proxy Setting in Android Device:
Click the Setting inside Android phone and then wi-fi
Long press on the connected wifi and select Modify network
Click the Advanced options if you can't see the Proxy Hostname field
In the Proxy Hostname enter the host IP or name you want to connect. A typical staging server will be named as stg.api.mygoodcompany.com
For the port enter the four digit port number for example 9502
Hit the Save button
One Last Stop:
Remember we generated the signed apk file in Sign APK File section. Now is the time to install that APK file.
Open a terminal and changed to the signed apk file folder
Connect your Android device to your machine
Remove any previous installed apk file from the Android device
Run adb install name of the apk file
If for some reason the above command return with adb command not found. Enter the full path as C:\Users\shah\AppData\Local\Android\sdk\platform-tools\adb.exe install name of the apk file
I hope the problem might be solved. If not please leave me a comments.
Salam!
Use https://www.ssllabs.com/ssltest/ to test a domain.
The solution of Shihab Uddin in Kotlin.
import java.security.SecureRandom
import java.security.cert.X509Certificate
import javax.net.ssl.*
import javax.security.cert.CertificateException
object {
val okHttpClient: OkHttpClient
val gson: Gson
val retrofit: Retrofit
init {
okHttpClient = getOkHttpBuilder()
// Other parameters like connectTimeout(15, TimeUnit.SECONDS)
.build()
gson = GsonBuilder().setLenient().create()
retrofit = Retrofit.Builder()
.baseUrl(BASE_URL)
.client(okHttpClient)
.addConverterFactory(GsonConverterFactory.create(gson))
.build()
}
fun getOkHttpBuilder(): OkHttpClient.Builder =
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
OkHttpClient().newBuilder()
} else {
// Workaround for the error "Caused by: com.android.org.bouncycastle.jce.exception.ExtCertPathValidatorException: Could not validate certificate: Certificate expired at".
getUnsafeOkHttpClient()
}
private fun getUnsafeOkHttpClient(): OkHttpClient.Builder =
try {
// Create a trust manager that does not validate certificate chains
val trustAllCerts: Array<TrustManager> = arrayOf(
object : X509TrustManager {
#Throws(CertificateException::class)
override fun checkClientTrusted(chain: Array<X509Certificate?>?,
authType: String?) = Unit
#Throws(CertificateException::class)
override fun checkServerTrusted(chain: Array<X509Certificate?>?,
authType: String?) = Unit
override fun getAcceptedIssuers(): Array<X509Certificate> = arrayOf()
}
)
// Install the all-trusting trust manager
val sslContext: SSLContext = SSLContext.getInstance("SSL")
sslContext.init(null, trustAllCerts, SecureRandom())
// Create an ssl socket factory with our all-trusting manager
val sslSocketFactory: SSLSocketFactory = sslContext.socketFactory
val builder = OkHttpClient.Builder()
builder.sslSocketFactory(sslSocketFactory,
trustAllCerts[0] as X509TrustManager)
builder.hostnameVerifier { _, _ -> true }
builder
} catch (e: Exception) {
throw RuntimeException(e)
}
}
The same error will also appear if you use Glide, images won't show. To overcome it see Glide - javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found and How to set OkHttpClient for glide.
#GlideModule
class MyAppGlideModule : AppGlideModule() {
val okHttpClient = Api.getOkHttpBuilder().build() // Api is the class written above.
// It is better to create okHttpClient here and not use Api.okHttpClient,
// because their settings may differ. For instance, it can use its own
// `addInterceptor` and `addNetworkInterceptor` that can affect on a read JSON.
override fun registerComponents(context: Context, glide: Glide, registry: Registry) {
registry.replace(GlideUrl::class.java, InputStream::class.java,
OkHttpUrlLoader.Factory(okHttpClient))
}
}
build.gradle:
// Glide.
implementation 'com.github.bumptech.glide:glide:4.11.0'
implementation 'com.github.bumptech.glide:okhttp3-integration:4.11.0'
kapt 'com.github.bumptech.glide:compiler:4.11.0'
UPDATE
I also got another error on API 16 emulator:
routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version
(external/openssl/ssl/s23_clnt.c:741'.
Reading 1 and 2, I changed code so:
okHttpClient = getOkHttpBuilder().build()
private fun getOkHttpBuilder(): OkHttpClient.Builder {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
Security.insertProviderAt(Conscrypt.newProvider(), 1)
}
return OkHttpClient().newBuilder()
}
// build.gradle:
implementation 'org.conscrypt:conscrypt-android:2.5.1'
I also removed these lines from MyApplication:
try {
ProviderInstaller.installIfNeeded(applicationContext)
val sslContext = SSLContext.getInstance("TLSv1.2")
sslContext.init(null, null, null)
sslContext.createSSLEngine()
} catch (e: GooglePlayServicesRepairableException) {
Timber.e(e.stackTraceToString())
// Prompt the user to install/update/enable Google Play services.
GoogleApiAvailability.getInstance().showErrorNotification(this, e.connectionStatusCode)
} catch (e: GooglePlayServicesNotAvailableException) {
Timber.e(e.stackTraceToString())
// Prompt the user to install/update/enable Google Play services.
// GoogleApiAvailability.getInstance().showErrorNotification(this, e.errorCode)
} catch (e: NoSuchAlgorithmException) {
Timber.e(e.stackTraceToString())
} catch (e: KeyManagementException) {
Timber.e(e.stackTraceToString())
}
But the library adds 3.4 Mb to apk.
I had the same problem what i found was that the certificate .crt file i provided missing an intermediate certificate. So I asked all .crt files from my server admin, then concatinated them in reverse order.
Ex.
1. Root.crt
2. Inter.crt
3. myCrt.crt
in windows i executed
copy Inter.crt + Root.crt newCertificate.crt
(Here i ignored myCrt.crt)
Then i provided newCertificate.crt file into code via inputstream.
Work done.
The error message I was getting was similar but the reason was that the self signed certificate had expired.
When the openssl client was attempted, it gave me the reason which was overlooked when I was checking the certificate dialog from firefox.
So in general, if the certificate is there in the keystore and its "VALID", this error will go off.
I had the same problem while connecting from Android client to Kurento server.
Kurento server use jks certificates, so I had to convert pem to it.
As input for conversion I used cert.pem file and it lead to such errors.
But if use fullchain.pem instead of cert.pem - all is OK.
I know that you don't need to trust all certificates but in my case I had problems with some debugging environments where we had self-signed certificates and I needed a dirty solution.
All I had to do was to change the initialization of the sslContext
mySSLContext.init(null, trustAllCerts, null);
where trustAllCerts was created like this:
private final TrustManager[] trustAllCerts= new TrustManager[] { new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[]{};
}
public void checkClientTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
} };
Hope that this will come in handy.
In my case, the root & intermediate certificates was successfully installed but I still got "Trust anchor for certification path not found." exception!. After digging the android document, found out that by default, secure connections (using protocols like TLS and HTTPS) from all apps trust the pre-installed system CAs, and apps targeting Android 6.0 (API level 23) and lower also trust the user-added CA store by default. If your app running on a OS with api level higher than 23 you should explicitly allow the app to trust user-added CA by adding its address to network_security_config like bellow:
<domain-config>
<domain includeSubdomains="true">PUT_YOUR_SERVER_ADDERESS</domain>
<trust-anchors>
<certificates src="user" />
</trust-anchors>
</domain-config>
The Trust anchor error can happen for a lot of reasons. For me it was simply that I was trying to access https://example.com/ instead of https://www.example.com/.
So you might want to double-check your URLs before starting to build your own Trust Manager (like I did).
In Gingerbread phones, I always get this error: Trust Anchor not found for Android SSL Connection, even if I setup to rely on my certificate.
Here is the code I use (in Scala language):
object Security {
private def createCtxSsl(ctx: Context) = {
val cer = {
val is = ctx.getAssets.open("mycertificate.crt")
try
CertificateFactory.getInstance("X.509").generateCertificate(is)
finally
is.close()
}
val key = KeyStore.getInstance(KeyStore.getDefaultType)
key.load(null, null)
key.setCertificateEntry("ca", cer)
val tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm)
tmf.init(key)
val c = SSLContext.getInstance("TLS")
c.init(null, tmf.getTrustManagers, null)
c
}
def prepare(url: HttpURLConnection)(implicit ctx: Context) {
url match {
case https: HttpsURLConnection ⇒
val cSsl = ctxSsl match {
case None ⇒
val res = createCtxSsl(ctx)
ctxSsl = Some(res)
res
case Some(c) ⇒ c
}
https.setSSLSocketFactory(cSsl.getSocketFactory)
case _ ⇒
}
}
def noSecurity(url: HttpURLConnection) {
url match {
case https: HttpsURLConnection ⇒
https.setHostnameVerifier(new HostnameVerifier {
override def verify(hostname: String, session: SSLSession) = true
})
case _ ⇒
}
}
}
and here is the connection code:
def connect(securize: HttpURLConnection ⇒ Unit) {
val conn = url.openConnection().asInstanceOf[HttpURLConnection]
securize(conn)
conn.connect();
....
}
try {
connect(Security.prepare)
} catch {
case ex: SSLHandshakeException /*if ex.getMessage != null && ex.getMessage.contains("Trust anchor for certification path not found")*/ ⇒
connect(Security.noSecurity)
}
Basically, I setup to trust on my custom certificate. If that fails, then I disable security. This is not the best option, but the only choice I know with old and buggy phones.
This sample code, can be easily translated into Java.
I know this is a very old article, but I came across this article when trying to solve my trust anchor issues. I have posted how I fixed it. If you have pre-installed your Root CA you need to add a configuration to the manifest.
https://stackoverflow.com/a/60102517/114265
In my case this was happening after update to Android 8.0. The self-signed certificate Android was set to trust was using signature algorithm SHA1withRSA. Switching to a new cert, using signature algorithm SHA256withRSA fixed the problem.
I have had a similar problem and I have completely ruled out the strategy of trusting all sources.
I share here my solution applied to an application implemented in Kotlin
I would first recommend using the following website to obtain information about the certificate and its validity
If it does not appear as an 'Accepted Issuers' in the Android default trust store, we must get that certificate and incorporate it into the application to create a custom trust store
The ideal solution in my case was to create a high-level Trust Manager that combines the custom and the Android default trust store
Here he exposes the high level code used to configure the OkHttpClient that he used with Retrofit.
override fun onBuildHttpClient(httpClientBuild: OkHttpClient.Builder) {
val trustManagerWrapper = createX509TrustManagerWrapper(
arrayOf(
getCustomX509TrustManager(),
getDefaultX509TrustManager()
)
)
printX509TrustManagerAcceptedIssuers(trustManagerWrapper)
val sslSocketFactory = createSocketFactory(trustManagerWrapper)
httpClientBuild.sslSocketFactory(sslSocketFactory, trustManagerWrapper)
}
In this way, I could communicate with the server with a self-signed certificate and with other servers with a certificate issued by a trusted certification entity
This is it, I hope it can help someone.
Sometimes it happens when admins setup the certificate incorrectly
Check URL here
https://www.sslshopper.com/ssl-checker.html
In my case, there was an error
The certificate is not trusted in all web browsers. You may need to install an Intermediate/chain certificate to link it to a trusted root certificate. Learn more about this error. You can fix this by following GlobalSign's Certificate Installation Instructions for your server platform. Pay attention to the parts about Intermediate certificates.
I use these methods that one of them is in solutions above works for me :
First:
public okhttp3.OkHttpClient getUnsafeOkHttpClient() {
try {
// Create a trust manager that does not validate
certificate chains
final TrustManager[] trustAllCerts = new TrustManager[] {
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[]{};
}
}
};
// Install the all-trusting trust manager
final SSLContext sslContext =
SSLContext.getInstance("SSL");
sslContext.init(null, trustAllCerts, new
java.security.SecureRandom());
// Create an ssl socket factory with our all-trusting
manager
final SSLSocketFactory sslSocketFactory =
sslContext.getSocketFactory();
okhttp3.OkHttpClient.Builder builder = new
okhttp3.OkHttpClient.Builder();
builder.sslSocketFactory(sslSocketFactory,
(X509TrustManager)trustAllCerts[0]);
builder.hostnameVerifier(new HostnameVerifier() {
#Override
public boolean verify(String hostname, SSLSession
session) {
return true;
}
});
okhttp3.OkHttpClient okHttpClient = builder.build();
return okHttpClient;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
Second:
#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("SSL");
sc.init(null, trustAllCerts, new SecureRandom());
HttpsURLConnection
.setDefaultSSLSocketFactory(sc.getSocketFactory());
HttpsURLConnection.setDefaultHostnameVerifier(new
HostnameVerifier() {
#Override
public boolean verify(String arg0, SSLSession arg1) {
return true;
}
});
} catch (Exception ignored) {
}
}
and:
put this libraries to your classpath:
implementation 'com.squareup.okhttp:okhttp:2.3.0'
implementation 'com.squareup.okhttp:okhttp-urlconnection:2.3.0'
androidTestImplementation 'androidx.test.espresso:espresso-
core:3.3.0'
be sure that you call them in your class
In my case, the certificate in the website was correct (Issuer = GlobalSign RSA OV SSL CA 2018), but the certificate file I was downloading was wrong, because of the Antivirus that was "intercepting" the certificate and deliverying a new different certificate to download fron the browsers (Issuer = ESET SSL Filter CA) !!!
Check your certificate file has the correct issuer.
**Set proper alias name**
CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509","BC");
X509Certificate cert = (X509Certificate) certificateFactory.generateCertificate(derInputStream);
String alias = cert.getSubjectX500Principal().getName();
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
trustStore.load(null);
trustStore.setCertificateEntry(alias, cert);
Relpcae your clicent Like below
var httpClient = new HttpClient(new System.Net.Http.HttpClientHandler());
Change https to http
I am trying to make HTTPS calls to site that has 2 SSL certificates: a self-signed certificate and a certificate that was signed by the the first certificate. When I use an HttpClient to send a request to the site, the console logs an untrusted chain, shows both certificates, then print a long stack trace of that is caused by java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
I have installed both certificates on my phone and navigating Chrome to the site shows a trusted connection (it had an untrusted connection warning before I installed the certificates). I believe the issue is that the App refuses to trust self-signed certificates. I do not have access to the server and thus have no influence on its certificates, so installing a certificate signed by a trusted CA is not viable.
Solutions I've tried that have not worked.
ServicePointManager.ServerCertificateValidationCallback doesn't seem to run.
I have tried using my own function for ServicePointManager.ServerCertificateValidationCallback, but the delegate I give it never seems to run. I have the following code in my MainActivity.OnCreate method, but the console never logs the message:
System.Net.ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) =>
{
Console.WriteLine($"****************************************************************************************************");
return true;
};
HttpClientHandler.ServerCertificateCustomValidationCallback throws an exception.
I have tried using an HttpClientHandler and settings its ServerCertificateCustomValidationCallback, but I just get the message:
System.NotImplementedException: The method or operation is not implemented. at System.Net.Http.HttpClientHandler.set_ServerCertificateCustomValidationCallback (System.Func`5[T1,T2,T3,T4,TResult] value).
Setup code:
HttpClientHandler handler = new HttpClientHandler();
handler.ServerCertificateCustomValidationCallback = (message, cert, chain, errors) => true;
HttpClient client = new HttpClient(handler);
I was able to get this to work in both Android and iOS.
iOS was easy, just override ServicePointManager.ServerCertificateValidationCallback:
ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => true;
For Android I used Bruno Caceiro's answer from a similar question and a created Dependency Service.
In my Xamarin Forms project I added a simple interface:
public interface IHTTPClientHandlerCreationService
{
HttpClientHandler GetInsecureHandler();
}
And in my Xamarin Android project I implemented the interface:
[assembly: Dependency(typeof(HTTPClientHandlerCreationService_Android))]
namespace MyApp.Droid
{
public class HTTPClientHandlerCreationService_Android : CollateralUploader.Services.IHTTPClientHandlerCreationService
{
public HttpClientHandler GetInsecureHandler()
{
return new IgnoreSSLClientHandler();
}
}
internal class IgnoreSSLClientHandler : AndroidClientHandler
{
protected override SSLSocketFactory ConfigureCustomSSLSocketFactory(HttpsURLConnection connection)
{
return SSLCertificateSocketFactory.GetInsecure(1000, null);
}
protected override IHostnameVerifier GetSSLHostnameVerifier(HttpsURLConnection connection)
{
return new IgnoreSSLHostnameVerifier();
}
}
internal class IgnoreSSLHostnameVerifier : Java.Lang.Object, IHostnameVerifier
{
public bool Verify(string hostname, ISSLSession session)
{
return true;
}
}
}
Shared code to correctly set up the HttpClient:
switch (Device.RuntimePlatform)
{
case Device.Android:
this.httpClient = new HttpClient(DependencyService.Get<Services.IHTTPClientHandlerCreationService>().GetInsecureHandler());
break;
default:
ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => true;
this.httpClient = new HttpClient(new HttpClientHandler());
break;
}
I am building an android app which is connecting to a server and retrieving data. First I got to choose whether I will be using AsynchTask (with HttoClient) or AsynchHttpClient, and i chose AsynchHttpClient. Now, actually everything is working fine, but today, when I was debugging something else, I noticed that the debugger throws a warning when I am sending/retrieving data(I am doing everything over https). The debugger says something like Beware! using the fix is insecure, as it doesn't verify SSL certificates. I was doing some digging, and I found this message inside of the AsynchHttpClient class, the actual part where it is comming from is here:
private static SchemeRegistry getDefaultSchemeRegistry(boolean fixNoHttpResponseException, int httpPort, int httpsPort) {
if (fixNoHttpResponseException) {
Log.d(LOG_TAG, "Beware! Using the fix is insecure, as it doesn't verify SSL certificates.");
}
if (httpPort < 1) {
httpPort = 80;
Log.d(LOG_TAG, "Invalid HTTP port number specified, defaulting to 80");
}
if (httpsPort < 1) {
httpsPort = 443;
Log.d(LOG_TAG, "Invalid HTTPS port number specified, defaulting to 443");
}
I am not quite sure which fix is meant. And yes i almost forgot, I read that it may be because I am using self signed certificates (for testing), but before i release something which isn't secure I thought I ask here if someone else knows what exactly this message means
Thanks
Maybe there is something wrong with your cetificates ?
I use this method to add my certificates in Android projects.
public static SSLContext getFactory() throws Exception {
KeyStore trusted = KeyStore.getInstance("BKS");
InputStream in = context.getResources().openRawResource(R.raw.myfile);
try {
// Initialisation de notre keystore. On entre le mot de passe (storepass)
trusted.load(in, "mypassword".toCharArray());
} finally {
in.close();
}
TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509");
tmf.init(trusted);
SSLContext ssl_context = SSLContext.getInstance("SSL");
ssl_context.init(null, tmf.getTrustManagers(), null);
return ssl_context;
}
I am trying to connect to an IIS6 box running a godaddy 256bit SSL cert, and I am getting the error :
java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
Been trying to determine what could be causing that, but drawing blanks right now.
Here is how I am connecting :
HttpsURLConnection conn;
conn = (HttpsURLConnection) (new URL(mURL)).openConnection();
conn.setConnectTimeout(20000);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.connect();
String tempString = toString(conn.getInputStream());
Contrary to the accepted answer you do not need a custom trust manager, you need to fix your server configuration!
I hit the same problem while connecting to an Apache server with an incorrectly installed dynadot/alphassl certificate. I'm connecting using HttpsUrlConnection (Java/Android), which was throwing -
javax.net.ssl.SSLHandshakeException:
java.security.cert.CertPathValidatorException:
Trust anchor for certification path not found.
The actual problem is a server misconfiguration - test it with http://www.digicert.com/help/ or similar, and it will even tell you the solution:
"The certificate is not signed by a trusted authority (checking against Mozilla's root store). If you bought the certificate from a trusted authority, you probably just need to install one or more Intermediate certificates. Contact your certificate provider for assistance doing this for your server platform."
You can also check the certificate with openssl:
openssl s_client -debug -connect www.thedomaintocheck.com:443
You'll probably see:
Verify return code: 21 (unable to verify the first certificate)
and, earlier in the output:
depth=0 OU = Domain Control Validated, CN = www.thedomaintocheck.com
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 OU = Domain Control Validated, CN = www.thedomaintocheck.com
verify error:num=27:certificate not trusted
verify return:1
depth=0 OU = Domain Control Validated, CN = www.thedomaintocheck.com
verify error:num=21:unable to verify the first certificate`
The certificate chain will only contain 1 element (your certificate):
Certificate chain
0 s:/OU=Domain Control Validated/CN=www.thedomaintocheck.com
i:/O=AlphaSSL/CN=AlphaSSL CA - G2
... but should reference the signing authorities in a chain back to one which is trusted by Android (Verisign, GlobalSign, etc):
Certificate chain
0 s:/OU=Domain Control Validated/CN=www.thedomaintocheck.com
i:/O=AlphaSSL/CN=AlphaSSL CA - G2
1 s:/O=AlphaSSL/CN=AlphaSSL CA - G2
i:/C=BE/O=GlobalSign nv-sa/OU=Root CA/CN=GlobalSign Root CA
2 s:/C=BE/O=GlobalSign nv-sa/OU=Root CA/CN=GlobalSign Root CA
i:/C=BE/O=GlobalSign nv-sa/OU=Root CA/CN=GlobalSign Root CA
Instructions (and the intermediate certificates) for configuring your server are usually provided by the authority that issued your certificate, for example: http://www.alphassl.com/support/install-root-certificate.html
After installing the intermediate certificates provided by my certificate issuer I now have no errors when connecting using HttpsUrlConnection.
The solution of #Chrispix is dangerous! Trusting all certificates allows anybody to do a man in the middle attack! Just send ANY certificate to the client and it will accept it!
Add your certificate(s) to a custom trust manager like described in this post: Trusting all certificates using HttpClient over HTTPS
Although it is a bit more complex to establish a secure connection with a custom certificate, it will bring you the wanted ssl encryption security without the danger of man in the middle attack!
If you use retrofit, you need to customize your OkHttpClient.
retrofit = new Retrofit.Builder()
.baseUrl(ApplicationData.FINAL_URL)
.client(getUnsafeOkHttpClient().build())
.addConverterFactory(GsonConverterFactory.create())
.build();
Full code are as below.
public class RestAdapter {
private static Retrofit retrofit = null;
private static ApiInterface apiInterface;
public static OkHttpClient.Builder getUnsafeOkHttpClient() {
try {
// Create a trust manager that does not validate certificate chains
final TrustManager[] trustAllCerts = new TrustManager[]{
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[]{};
}
}
};
// Install the all-trusting trust manager
final SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
// Create an ssl socket factory with our all-trusting manager
final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
OkHttpClient.Builder builder = new OkHttpClient.Builder();
builder.sslSocketFactory(sslSocketFactory, (X509TrustManager) trustAllCerts[0]);
builder.hostnameVerifier(new HostnameVerifier() {
#Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
return builder;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static ApiInterface getApiClient() {
if (apiInterface == null) {
try {
retrofit = new Retrofit.Builder()
.baseUrl(ApplicationData.FINAL_URL)
.client(getUnsafeOkHttpClient().build())
.addConverterFactory(GsonConverterFactory.create())
.build();
} catch (Exception e) {
e.printStackTrace();
}
apiInterface = retrofit.create(ApiInterface.class);
}
return apiInterface;
}
}
You can trust particular certificate at runtime.
Just download it from server, put in assets and load like this using ssl-utils-android:
OkHttpClient client = new OkHttpClient();
SSLContext sslContext = SslUtils.getSslContextForCertificateFile(context, "BPClass2RootCA-sha2.cer");
client.setSslSocketFactory(sslContext.getSocketFactory());
In the example above I used OkHttpClient but SSLContext can be used with any client in Java.
If you have any questions feel free to ask. I'm the author of this small library.
Update based on latest Android documentation (March 2017):
When you get this type of error:
javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:374)
at libcore.net.http.HttpConnection.setupSecureSocket(HttpConnection.java:209)
at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:478)
at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:433)
at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:290)
at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:240)
at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:282)
at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:177)
at libcore.net.http.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:271)
the issue could be one of the following:
The CA that issued the server certificate was unknown
The server certificate wasn't signed by a CA, but was self signed
The server configuration is missing an intermediate CA
The solution is to teach HttpsURLConnection to trust a specific set of CAs. How? Please check https://developer.android.com/training/articles/security-ssl.html#CommonProblems
Others who are using AsyncHTTPClient from com.loopj.android:android-async-http library, please check Setup AsyncHttpClient to use HTTPS.
Replying to very old post. But maybe it will help some newbie and if non of the above works out.
Explanation: I know nobody wants explanation crap; rather the solution. But in one liner, you are trying to access a service from your local machine to a remote machine which does not trust your machine. You request need to gain the trust from remote server.
Solution: The following solution assumes that you have the following conditions met
Trying to access a remote api from your local machine.
You are building for Android app
Your remote server is under proxy filtration (you use proxy in your browser setting to access the remote api service, typically a staging or dev server)
You are testing on real device
Steps:
You need a .keystore extension file to signup your app. If you don't know how to create .keystore file; then follow along with the following section Create .keystore file or otherwise skip to next section Sign Apk File
Create .keystore file
Open Android Studio. Click top menu Build > Generate Signed APK. In the next window click the Create new... button. In the new window, please input in data in all fields. Remember the two Password field i recommend should have the same password; don't use different password; and also remember the save path at top most field Key store path:. After you input all the field click OK button.
Sign Apk File
Now you need to build a signed app with the .keystore file you just created. Follow these steps
Build > Clean Project, wait till it finish cleaning
Build > Generate Signed APK
Click Choose existing... button
Select the .keystore file we just created in the Create .keystore file section
Enter the same password you created while creating in Create .keystore file section. Use same password for Key store password and Key password fields. Also enter the alias
Click Next button
In the next screen; which might be different based on your settings in build.gradle files, you need to select Build Types and Flavors.
For the Build Types choose release from the dropdown
For Flavors however it will depends on your settings in build.gradle file. Choose staging from this field. I used the following settings in the build.gradle, you can use the same as mine, but make sure you change the applicationId to your package name
productFlavors {
staging {
applicationId "com.yourapplication.package"
manifestPlaceholders = [icon: "#drawable/ic_launcher"]
buildConfigField "boolean", "CATALYST_DEBUG", "true"
buildConfigField "boolean", "ALLOW_INVALID_CERTIFICATE", "true"
}
production {
buildConfigField "boolean", "CATALYST_DEBUG", "false"
buildConfigField "boolean", "ALLOW_INVALID_CERTIFICATE", "false"
}
}
Click the bottom two Signature Versions checkboxes and click Finish button.
Almost There:
All the hardwork is done, now the movement of truth. Inorder to access the Staging server backed-up by proxy, you need to make some setting in your real testing Android devices.
Proxy Setting in Android Device:
Click the Setting inside Android phone and then wi-fi
Long press on the connected wifi and select Modify network
Click the Advanced options if you can't see the Proxy Hostname field
In the Proxy Hostname enter the host IP or name you want to connect. A typical staging server will be named as stg.api.mygoodcompany.com
For the port enter the four digit port number for example 9502
Hit the Save button
One Last Stop:
Remember we generated the signed apk file in Sign APK File section. Now is the time to install that APK file.
Open a terminal and changed to the signed apk file folder
Connect your Android device to your machine
Remove any previous installed apk file from the Android device
Run adb install name of the apk file
If for some reason the above command return with adb command not found. Enter the full path as C:\Users\shah\AppData\Local\Android\sdk\platform-tools\adb.exe install name of the apk file
I hope the problem might be solved. If not please leave me a comments.
Salam!
Use https://www.ssllabs.com/ssltest/ to test a domain.
The solution of Shihab Uddin in Kotlin.
import java.security.SecureRandom
import java.security.cert.X509Certificate
import javax.net.ssl.*
import javax.security.cert.CertificateException
object {
val okHttpClient: OkHttpClient
val gson: Gson
val retrofit: Retrofit
init {
okHttpClient = getOkHttpBuilder()
// Other parameters like connectTimeout(15, TimeUnit.SECONDS)
.build()
gson = GsonBuilder().setLenient().create()
retrofit = Retrofit.Builder()
.baseUrl(BASE_URL)
.client(okHttpClient)
.addConverterFactory(GsonConverterFactory.create(gson))
.build()
}
fun getOkHttpBuilder(): OkHttpClient.Builder =
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
OkHttpClient().newBuilder()
} else {
// Workaround for the error "Caused by: com.android.org.bouncycastle.jce.exception.ExtCertPathValidatorException: Could not validate certificate: Certificate expired at".
getUnsafeOkHttpClient()
}
private fun getUnsafeOkHttpClient(): OkHttpClient.Builder =
try {
// Create a trust manager that does not validate certificate chains
val trustAllCerts: Array<TrustManager> = arrayOf(
object : X509TrustManager {
#Throws(CertificateException::class)
override fun checkClientTrusted(chain: Array<X509Certificate?>?,
authType: String?) = Unit
#Throws(CertificateException::class)
override fun checkServerTrusted(chain: Array<X509Certificate?>?,
authType: String?) = Unit
override fun getAcceptedIssuers(): Array<X509Certificate> = arrayOf()
}
)
// Install the all-trusting trust manager
val sslContext: SSLContext = SSLContext.getInstance("SSL")
sslContext.init(null, trustAllCerts, SecureRandom())
// Create an ssl socket factory with our all-trusting manager
val sslSocketFactory: SSLSocketFactory = sslContext.socketFactory
val builder = OkHttpClient.Builder()
builder.sslSocketFactory(sslSocketFactory,
trustAllCerts[0] as X509TrustManager)
builder.hostnameVerifier { _, _ -> true }
builder
} catch (e: Exception) {
throw RuntimeException(e)
}
}
The same error will also appear if you use Glide, images won't show. To overcome it see Glide - javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found and How to set OkHttpClient for glide.
#GlideModule
class MyAppGlideModule : AppGlideModule() {
val okHttpClient = Api.getOkHttpBuilder().build() // Api is the class written above.
// It is better to create okHttpClient here and not use Api.okHttpClient,
// because their settings may differ. For instance, it can use its own
// `addInterceptor` and `addNetworkInterceptor` that can affect on a read JSON.
override fun registerComponents(context: Context, glide: Glide, registry: Registry) {
registry.replace(GlideUrl::class.java, InputStream::class.java,
OkHttpUrlLoader.Factory(okHttpClient))
}
}
build.gradle:
// Glide.
implementation 'com.github.bumptech.glide:glide:4.11.0'
implementation 'com.github.bumptech.glide:okhttp3-integration:4.11.0'
kapt 'com.github.bumptech.glide:compiler:4.11.0'
UPDATE
I also got another error on API 16 emulator:
routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version
(external/openssl/ssl/s23_clnt.c:741'.
Reading 1 and 2, I changed code so:
okHttpClient = getOkHttpBuilder().build()
private fun getOkHttpBuilder(): OkHttpClient.Builder {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
Security.insertProviderAt(Conscrypt.newProvider(), 1)
}
return OkHttpClient().newBuilder()
}
// build.gradle:
implementation 'org.conscrypt:conscrypt-android:2.5.1'
I also removed these lines from MyApplication:
try {
ProviderInstaller.installIfNeeded(applicationContext)
val sslContext = SSLContext.getInstance("TLSv1.2")
sslContext.init(null, null, null)
sslContext.createSSLEngine()
} catch (e: GooglePlayServicesRepairableException) {
Timber.e(e.stackTraceToString())
// Prompt the user to install/update/enable Google Play services.
GoogleApiAvailability.getInstance().showErrorNotification(this, e.connectionStatusCode)
} catch (e: GooglePlayServicesNotAvailableException) {
Timber.e(e.stackTraceToString())
// Prompt the user to install/update/enable Google Play services.
// GoogleApiAvailability.getInstance().showErrorNotification(this, e.errorCode)
} catch (e: NoSuchAlgorithmException) {
Timber.e(e.stackTraceToString())
} catch (e: KeyManagementException) {
Timber.e(e.stackTraceToString())
}
But the library adds 3.4 Mb to apk.
I had the same problem what i found was that the certificate .crt file i provided missing an intermediate certificate. So I asked all .crt files from my server admin, then concatinated them in reverse order.
Ex.
1. Root.crt
2. Inter.crt
3. myCrt.crt
in windows i executed
copy Inter.crt + Root.crt newCertificate.crt
(Here i ignored myCrt.crt)
Then i provided newCertificate.crt file into code via inputstream.
Work done.
The error message I was getting was similar but the reason was that the self signed certificate had expired.
When the openssl client was attempted, it gave me the reason which was overlooked when I was checking the certificate dialog from firefox.
So in general, if the certificate is there in the keystore and its "VALID", this error will go off.
I had the same problem while connecting from Android client to Kurento server.
Kurento server use jks certificates, so I had to convert pem to it.
As input for conversion I used cert.pem file and it lead to such errors.
But if use fullchain.pem instead of cert.pem - all is OK.
I know that you don't need to trust all certificates but in my case I had problems with some debugging environments where we had self-signed certificates and I needed a dirty solution.
All I had to do was to change the initialization of the sslContext
mySSLContext.init(null, trustAllCerts, null);
where trustAllCerts was created like this:
private final TrustManager[] trustAllCerts= new TrustManager[] { new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[]{};
}
public void checkClientTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
} };
Hope that this will come in handy.
In my case, the root & intermediate certificates was successfully installed but I still got "Trust anchor for certification path not found." exception!. After digging the android document, found out that by default, secure connections (using protocols like TLS and HTTPS) from all apps trust the pre-installed system CAs, and apps targeting Android 6.0 (API level 23) and lower also trust the user-added CA store by default. If your app running on a OS with api level higher than 23 you should explicitly allow the app to trust user-added CA by adding its address to network_security_config like bellow:
<domain-config>
<domain includeSubdomains="true">PUT_YOUR_SERVER_ADDERESS</domain>
<trust-anchors>
<certificates src="user" />
</trust-anchors>
</domain-config>
The Trust anchor error can happen for a lot of reasons. For me it was simply that I was trying to access https://example.com/ instead of https://www.example.com/.
So you might want to double-check your URLs before starting to build your own Trust Manager (like I did).
In Gingerbread phones, I always get this error: Trust Anchor not found for Android SSL Connection, even if I setup to rely on my certificate.
Here is the code I use (in Scala language):
object Security {
private def createCtxSsl(ctx: Context) = {
val cer = {
val is = ctx.getAssets.open("mycertificate.crt")
try
CertificateFactory.getInstance("X.509").generateCertificate(is)
finally
is.close()
}
val key = KeyStore.getInstance(KeyStore.getDefaultType)
key.load(null, null)
key.setCertificateEntry("ca", cer)
val tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm)
tmf.init(key)
val c = SSLContext.getInstance("TLS")
c.init(null, tmf.getTrustManagers, null)
c
}
def prepare(url: HttpURLConnection)(implicit ctx: Context) {
url match {
case https: HttpsURLConnection ⇒
val cSsl = ctxSsl match {
case None ⇒
val res = createCtxSsl(ctx)
ctxSsl = Some(res)
res
case Some(c) ⇒ c
}
https.setSSLSocketFactory(cSsl.getSocketFactory)
case _ ⇒
}
}
def noSecurity(url: HttpURLConnection) {
url match {
case https: HttpsURLConnection ⇒
https.setHostnameVerifier(new HostnameVerifier {
override def verify(hostname: String, session: SSLSession) = true
})
case _ ⇒
}
}
}
and here is the connection code:
def connect(securize: HttpURLConnection ⇒ Unit) {
val conn = url.openConnection().asInstanceOf[HttpURLConnection]
securize(conn)
conn.connect();
....
}
try {
connect(Security.prepare)
} catch {
case ex: SSLHandshakeException /*if ex.getMessage != null && ex.getMessage.contains("Trust anchor for certification path not found")*/ ⇒
connect(Security.noSecurity)
}
Basically, I setup to trust on my custom certificate. If that fails, then I disable security. This is not the best option, but the only choice I know with old and buggy phones.
This sample code, can be easily translated into Java.
I know this is a very old article, but I came across this article when trying to solve my trust anchor issues. I have posted how I fixed it. If you have pre-installed your Root CA you need to add a configuration to the manifest.
https://stackoverflow.com/a/60102517/114265
In my case this was happening after update to Android 8.0. The self-signed certificate Android was set to trust was using signature algorithm SHA1withRSA. Switching to a new cert, using signature algorithm SHA256withRSA fixed the problem.
I have had a similar problem and I have completely ruled out the strategy of trusting all sources.
I share here my solution applied to an application implemented in Kotlin
I would first recommend using the following website to obtain information about the certificate and its validity
If it does not appear as an 'Accepted Issuers' in the Android default trust store, we must get that certificate and incorporate it into the application to create a custom trust store
The ideal solution in my case was to create a high-level Trust Manager that combines the custom and the Android default trust store
Here he exposes the high level code used to configure the OkHttpClient that he used with Retrofit.
override fun onBuildHttpClient(httpClientBuild: OkHttpClient.Builder) {
val trustManagerWrapper = createX509TrustManagerWrapper(
arrayOf(
getCustomX509TrustManager(),
getDefaultX509TrustManager()
)
)
printX509TrustManagerAcceptedIssuers(trustManagerWrapper)
val sslSocketFactory = createSocketFactory(trustManagerWrapper)
httpClientBuild.sslSocketFactory(sslSocketFactory, trustManagerWrapper)
}
In this way, I could communicate with the server with a self-signed certificate and with other servers with a certificate issued by a trusted certification entity
This is it, I hope it can help someone.
Sometimes it happens when admins setup the certificate incorrectly
Check URL here
https://www.sslshopper.com/ssl-checker.html
In my case, there was an error
The certificate is not trusted in all web browsers. You may need to install an Intermediate/chain certificate to link it to a trusted root certificate. Learn more about this error. You can fix this by following GlobalSign's Certificate Installation Instructions for your server platform. Pay attention to the parts about Intermediate certificates.
I use these methods that one of them is in solutions above works for me :
First:
public okhttp3.OkHttpClient getUnsafeOkHttpClient() {
try {
// Create a trust manager that does not validate
certificate chains
final TrustManager[] trustAllCerts = new TrustManager[] {
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[]{};
}
}
};
// Install the all-trusting trust manager
final SSLContext sslContext =
SSLContext.getInstance("SSL");
sslContext.init(null, trustAllCerts, new
java.security.SecureRandom());
// Create an ssl socket factory with our all-trusting
manager
final SSLSocketFactory sslSocketFactory =
sslContext.getSocketFactory();
okhttp3.OkHttpClient.Builder builder = new
okhttp3.OkHttpClient.Builder();
builder.sslSocketFactory(sslSocketFactory,
(X509TrustManager)trustAllCerts[0]);
builder.hostnameVerifier(new HostnameVerifier() {
#Override
public boolean verify(String hostname, SSLSession
session) {
return true;
}
});
okhttp3.OkHttpClient okHttpClient = builder.build();
return okHttpClient;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
Second:
#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("SSL");
sc.init(null, trustAllCerts, new SecureRandom());
HttpsURLConnection
.setDefaultSSLSocketFactory(sc.getSocketFactory());
HttpsURLConnection.setDefaultHostnameVerifier(new
HostnameVerifier() {
#Override
public boolean verify(String arg0, SSLSession arg1) {
return true;
}
});
} catch (Exception ignored) {
}
}
and:
put this libraries to your classpath:
implementation 'com.squareup.okhttp:okhttp:2.3.0'
implementation 'com.squareup.okhttp:okhttp-urlconnection:2.3.0'
androidTestImplementation 'androidx.test.espresso:espresso-
core:3.3.0'
be sure that you call them in your class
In my case, the certificate in the website was correct (Issuer = GlobalSign RSA OV SSL CA 2018), but the certificate file I was downloading was wrong, because of the Antivirus that was "intercepting" the certificate and deliverying a new different certificate to download fron the browsers (Issuer = ESET SSL Filter CA) !!!
Check your certificate file has the correct issuer.
**Set proper alias name**
CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509","BC");
X509Certificate cert = (X509Certificate) certificateFactory.generateCertificate(derInputStream);
String alias = cert.getSubjectX500Principal().getName();
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
trustStore.load(null);
trustStore.setCertificateEntry(alias, cert);
Relpcae your clicent Like below
var httpClient = new HttpClient(new System.Net.Http.HttpClientHandler());
Change https to http