key Hash mismatch for signed apk

Question

I'm integrated facebook login in my app and the key hash created for production using release .jks play store signin file and generated keyhash added in fb console and no other key hash added. now when i try to login using fb login it gives error:

Invalid key hash. The key hash xxxxfgxxxdfdsxxx= does not match any stored key hashes. Configure your app key hashes at https://developers.facebook.com/apps/xxxxx7xx4xxxx/

and above (xxxxfgxxxdfdsxxx=) given key hash is not even in my fb developer console.

add that given xxxxfgxxxdfdsxxx= key hash in your facebook console. it will work. — Chintak Patel, Apr 05 '18 at 10:51
ok. but by whom/from where this key hash is generated? and can it safe to add that key hash for my application in developer console? — Shrikant Devarmani, Apr 05 '18 at 11:04
Please look at my updated answer below. In 2nd method it generates key hash from an app using package signature and it's safe — Chintak Patel, Apr 05 '18 at 11:10

Chintak Patel · Answer 1 · 2018-04-05T11:09:29.193

0

I don't know why but looking Facebook needs 2 key hashes,

1) we create using .jks file release key hash,

keytool -exportcert -alias <RELEASE_KEY_ALIAS> -keystore <RELEASE_KEY_PATH> | openssl sha1 -binary | openssl base64

and

2) it also shows us in device that (xxxxxxxxxx=) key doesn't match in your key hashes.

It uses this method in your activity.

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);
    }
}

So when we enter both key hashes. It works perfectly.

edited Apr 05 '18 at 11:09

answered Apr 05 '18 at 10:55

Chintak Patel

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Great. Accept this answer so other can also get this if they have issues in future. – Chintak Patel Apr 05 '18 at 11:17
Key hashes generated through command prompt and the above method getKeyHash are different? if yes how? – Shrikant Devarmani Apr 05 '18 at 11:21
I am also searching it for a long but I didn't found it and so I enter both keys everytime. – Chintak Patel Apr 05 '18 at 11:26
Please refer this link https://stackoverflow.com/questions/7506392/how-to-create-android-facebook-key-hash/25524657#25524657 this will answer your question and Please don't forget to Accept answer and vote up – Chintak Patel Apr 05 '18 at 11:35

key Hash mismatch for signed apk

1 Answers1