Android Facebook SDK: generate release key hash

Question

I'm building an app in which users can log in with Facebook.

I've created the hash keys like following:

try {
         PackageInfo info = getPackageManager().getPackageInfo(
         "com.app.package",
         PackageManager.GET_SIGNATURES);
         for (Signature signature : info.signatures) {
         MessageDigest md = MessageDigest.getInstance("SHA");
         md.update(signature.toByteArray());
         Log.d("KeyHash", "KeyHash:"+ Base64.encodeToString(md.digest(),
         Base64.DEFAULT));
         Toast.makeText(getApplicationContext(), Base64.encodeToString(md.digest(),
                 Base64.DEFAULT), Toast.LENGTH_LONG).show();
         }
         } catch (NameNotFoundException e) {

         } catch (NoSuchAlgorithmException e) {

         }

In debug mode, everything works well.

When I export the project for release, it gives this error:

"Invalid key hash. The key hash ****************** does not match any stored key hashes"

I paste the key printed in the Facebook Developer dashboard, but the application still gives me that error.

The complete package of my actvity is "com.app.package.views" and I tried to use this package (as Google Play Package Name) in the dashboard, but nothing changed.

How can I solve it? How can I generate the right release key hash?

score 52 · Answer 1 · answered Feb 01 '16 at 10:37

I find a solution. for MAC

Use this one to get YOUR_RELEASE_KEY_ALIAS:

keytool -list -keystore /Users/***/Documents/keystore/***.jks

and this one to get your release keyhash:

keytool -exportcert -alias YOUR_RELEASE_KEY_ALIAS -keystore /Users/***/Documents/keystore/***.jks | openssl sha1 -binary | openssl base64

It works for me.

Nadhir Falta · Answer 2 · 2020-08-20T14:19:01.653

44

For future reference, if you already have your app on Play Store you can this:

Go to Release Management
select App Signing in Release Management
You can see SHA1 key in hex format App signing certificate.
Copy the SHA1 in hex format and convert it in to base64 format, you can use this link http://tomeko.net/online_tools/hex_to_base64.php to do that without the SHA1: part of the hex.
Go to Facebook developer console and add the key(after convert to base 64) in the settings —> basic –> key hashes.

edited Aug 20 '20 at 14:19

answered Feb 14 '19 at 03:39

Nadhir Falta

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I have added the new converted key hash to settings —> basic –> key hashes. But still Im getting the same error(only on the release). Interesting part is the invalid key hash which is shown in the error is not even mentioned by me in the settings —> basic –> key hashes and i dnt know where it came from – Shikhar Mar 18 '19 at 10:00
Thanks for the working link. :) Just wanted to add: It was different when I generated it through Command Prompt as described in FB Documentation. – Rohit Sharma Aug 20 '20 at 14:20
I'm using the signing key from Google and couldn't use other methods. This method works like a charm for me. – Anky An Mar 01 '22 at 11:59

score 34 · Answer 3 · answered Aug 08 '16 at 07:40

34

The simplest solution.

1) Sign your Apk.

2) Connect your device to machine and Install signed apk on real device.

3) When facebook login is pressed, you will get an error saying "Invalid key hash. The key hash "xxx" does not match any stored key. ..." on your logcat.

4)Copy the logcat Hash Key and put this key to developers.facebook.com/apps/104...../settings/

answered Aug 08 '16 at 07:40

Bharat Hangarge

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5
13

This is a simple solution. – saintjab Nov 26 '16 at 22:23
1

soooooo simple. – Asesha George Jul 15 '17 at 11:03
struggled for couple of hours and this simple solution worked. Thanks a ton – Rinav Sep 01 '17 at 17:44
Hi, If we want to run that application in different devices how can we gave hash key to the face book developer contain app. Is it necessary to add different hash keys for running in different devices. – Deepak Nov 28 '17 at 14:53
@Deepak this method will retrieve the key for the app, for the facebook login, you must publish your app on Facebook. BTW thank you, best solution ever – Thecave3 Mar 15 '18 at 01:02
Most simple and helpful answer. – Walter Liu Mar 28 '18 at 11:16
how to get sign apk log in android studio? – ajay dhadhal May 21 '18 at 06:45
Install your signed apk on to your device and connect your device to android studio once you connect your device you will see the your device conncted to android studio in logcat – Bharat Hangarge May 21 '18 at 10:16
it's been 5 hours, you are very sweet – ony seven Dec 07 '18 at 17:38
not actual for Google Play Signing. it's just ok for Debug key. useless now – user924 Nov 12 '21 at 12:38
Hello, this solution did work for me, however I'm curious that why i get different key hash when I run the keytool -export cert xxxxx command? Thank you. – nathan1658 Nov 18 '22 at 15:27
works for debug and release versions – Maxim Aug 10 '23 at 10:02

score 9 · Answer 4 · answered Aug 07 '15 at 15:16

We need to replace the word "openssl" by the path of one file inside the openssl structure.

So, My CMD command is:

C:\Program Files\Java\jre1.8.0_45\bin>keytool -exportcert -alias Informatheus -keystore C:\Users\Atendimento\Dropbox\AndroidKeystore\Keystore | C:\Users\Atendimento\Desktop\openssl\bin\openssl sha1 -binary | C:\Users\Atendimento\Desktop\openssl\bin\openssl base64

It worked.

eng mohamed emam · Answer 5 · 2017-10-03T08:31:11.633

// add this method to your first activity and open log and search for Base64 tag this is the Hashkey i hoop it help

public void getHashkey(){
    try {
        PackageInfo info = getPackageManager().getPackageInfo(getApplicationContext().getPackageName(), PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());

            Log.i("Base64", Base64.encodeToString(md.digest(),Base64.NO_WRAP));
        }
    } catch (PackageManager.NameNotFoundException e) {
        Log.d("Name not found", e.getMessage(), e);

    } catch (NoSuchAlgorithmException e) {
        Log.d("Error", e.getMessage(), e);
    }
}

Please avoid code only answers and add a few lines of descriptive text — Matthias Seifert, Sep 25 '17 at 07:31

score 4 · Answer 6 · answered Jul 16 '21 at 08:30

4

July 2021: Find key in Google Console, if your app is already released

Google Play Consolez -> left menu Release -> Setup -> App Integrity -> Upload key certificate -> SHA-1 certificate fingerprint
Convert HEX to base64: https://base64.guru/converter/encode/hex
Add key in Facebook: Add your development and release key hashes

answered Jul 16 '21 at 08:30

rusakovic

126
6

Thanks so god damn much for this solution. Finally I can log in with Facebook. I've been going nuts over the last 8 hours trying to solve this. – Weblurk Jan 15 '22 at 20:44

score 3 · Answer 7 · answered Jul 31 '18 at 10:43

The simplest way to get hash key released apk is : Get SHA1 key of released apk using following command:

keytool -list -v -keystore keystore_path.jks -alias keystoreAlias

Thn you will get SHA1 key. Copy that key and generate hash key using following site:

Link to get hash key

You will get Output (base64): copy it and use where you want..

score 2 · Answer 8 · answered Oct 12 '20 at 13:58

First open the command prompt (Windows + R)
cd C:\Program Files\Java\jre1.8.0_172\bin
Download openssl from HERE
Create a folder named OpenSSL in C:/ drive
Export the downloaded zip file in OpenSSL folder
Generate the command as:-

keytool -exportcert -alias YOUR_ALIAS -keystore "YOUR_KEYSTORE_PATH" | "C:\OpenSSL\bin\openssl" sha1 -binary | "C:\OpenSSL\bin\openssl" base64
Paste the command in command prompt and press enter
Enter password
Here you can see the key :- "1skdhyjsgd56whdjddV+vCLE="

score 1 · Answer 9 · edited May 23 '17 at 10:31

1

Facebook SDK uses two different keys, one is Debug key which you can use during your development phase and other is Release key which is used once you create a signed application package. Here is a link about how to create debug and release keys.

Developer.Facebook

Also check out this SO post.

edited May 23 '17 at 10:31

Community

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1

answered Dec 12 '14 at 17:23

MajorGeek

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Rahul · Answer 10 · 2018-07-11T12:27:38.303

This one is the easiest way i found so far for generating key hash!

try
{
  PackageInfo info = getPackageManager().getPackageInfo(
      "Your Package Name",
      PackageManager.GET_SIGNATURES);
  for (Signature signature : info.signatures) {
    MessageDigest md = MessageDigest.getInstance("SHA");
    md.update(signature.toByteArray());
    Log.d("KeyHash:",Base64.encodeToString(md.digest(),Base64.DEFAULT));
  }
} catch (PackageManager.NameNotFoundException e) {

} catch (NoSuchAlgorithmException e) {

}

score -1 · Answer 11 · answered Apr 11 '21 at 17:44

You have to generate two Key Hashes. The first using the above command.

And once your app is in play store go to

Configuration -> app integrity

and grab the SHA1 that google generated and go to this site :

www.fbkeyhash.com

Paste the SHA1 and generate the second Key Hash.

Both of them need to be saved in the Facebook console in order for the live and debug version of your APK to work.

score -3 · Answer 12 · edited Jul 04 '16 at 05:24

-3

keytool -exportcert -alias aliasName -keystore C:\my_release_keystroke_info.jks | openssl sha1 -binary | openssl base64

edited Jul 04 '16 at 05:24

Wtower

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answered Jul 04 '16 at 05:07

Nitin Anand

795
6
9

1

Could you please add an explanation on what this does and how it helps? – Wtower Jul 04 '16 at 05:24
This appears to be just a repeat of the existing answers - [From Review](http://stackoverflow.com/review/low-quality-posts/12894956). – Pang Jul 05 '16 at 00:50

Android Facebook SDK: generate release key hash

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