Facebook Android Generate Key Hash

Question

Trying to create an android app with Facebook integration, I've gotten to the part in the docs where you have to generate a key hash file, it specifies to run the following code

keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore 
| openssl sha1 -binary
| openssl base64

When I run this in my terminal I get an error for Keystore tampered with or password was incorrect,

I just want to generate my Key Hash

Can anyone point me in the right direction?

Answer 1

I was able to do perform the requested task with some of the solutions here, but thought to myself, boy that is stupid... why not to write a small Java code that does this and pack it into a Jar, so I did...

A link to download the Jar

Works on Windows 8... didn't try any other OS.

Answer 2

Generate Debug hash key

  public String hashkey(Context context) {
        String keyhash = "";
        try {
            PackageInfo info = context.getPackageManager().getPackageInfo(context.getPackageName(), 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));
                keyhash = Base64.encodeToString(md.digest(), Base64.DEFAULT);
            }
        } catch (PackageManager.NameNotFoundException e) {

        } catch (NoSuchAlgorithmException e) {

        }
        return keyhash;
    }

Generate Release hash key

 keytool -exportcert -alias specialbridge -keystore /home/shilpi/newproject/specialBridge/SpecialBridgeAndroid/keystore/specialbridge.jks | openssl sha1 -binary | openssl base64

Answer 3

In order to generate release key hash you need to follow some easy steps.

1) Download Openssl

2) Make a openssl folder in C drive

3) Extract Zip files into this openssl folder created in C Drive.

4) Copy the File debug.keystore from .android folder in my case (C:\Users\SYSTEM.android) and paste into JDK bin Folder in my case (C:\Program Files\Java\jdk1.6.0_05\bin)

5) Open command prompt and give the path of JDK Bin folder in my case (C:\Program Files\Java\jdk1.7.0_40\bin).

6) Copy the following code and hit enter

keytool -exportcert -alias abcd-keystore D:\Projects\MyAppFolder\keystore.txt | C:\openssl\bin\openssl sha1 - binary | C:\openssl\bin\openssl base64 ex - keytool -exportcert -alias (your sing apk alias name enter here like my sign apk alian name is abcd )-keystore "signed apk generated keystore apth enter here" | "openssl bin folder path enter here" sha1 - binary | "openssl bin folder path enter here" base64

7) Now you need to enter password, Password = (enter your sign keystore password here)

8) you got keystore which are used for release app key hash

Answer 4

Hi everyone its my story how i get signed has key for facebook

first of all you just have copy this 2 methods in your first class

    private void getAppKeyHash() {
    try {
        PackageInfo info = getPackageManager().getPackageInfo(
                getPackageName(), PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md;

            md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            String something = new String(Base64.encode(md.digest(), 0));
            System.out.println("HASH  " + something);
            showSignedHashKey(something);

        }
    } catch (NameNotFoundException e1) {
        // TODO Auto-generated catch block
        Log.e("name not found", e1.toString());
    } catch (NoSuchAlgorithmException e) {

        Log.e("no such an algorithm", e.toString());
    } catch (Exception e) {
        Log.e("exception", e.toString());
    }
}
public void showSignedHashKey(String hashKey) {

    AlertDialog.Builder adb = new AlertDialog.Builder(this);
    adb.setTitle("Note Signed Hash Key");
    adb.setMessage(hashKey);
    adb.setPositiveButton("OK", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {

        }
    });

    adb.show();
}

**Call funcation getAppKeyHash() from your oncreate methode if you want signed hash then make signed build install signed build and run you will get hash key in dialog then just note it and update it on facebook dev account and comment that function and make another signed APK **

Answer 5

In order to generate key hash you need to follow some easy steps.

1) Download Openssl from: here.

2) Make a openssl folder in C drive

3) Extract Zip files into this openssl folder created in C Drive.

4) Copy the File debug.keystore from .android folder in my case (C:\Users\SYSTEM.android) and paste into JDK bin Folder in my case (C:\Program Files\Java\jdk1.6.0_05\bin)

5) Open command prompt and give the path of JDK Bin folder in my case (C:\Program Files\Java\jdk1.6.0_05\bin).

6) Copy the following code and hit enter

keytool -exportcert -alias androiddebugkey -keystore debug.keystore > c:\openssl\bin\debug.txt

7) Now you need to enter password, Password = android.

8) If you see in openssl Bin folder, you will get a file with the name of debug.txt

9) Now either you can restart command prompt or work with existing command prompt

10) get back to C drive and give the path of openssl Bin folder

11) copy the following code and paste

openssl sha1 -binary debug.txt > debug_sha.txt

12) you will get debug_sha.txt in openssl bin folder

13) Again copy following code and paste

openssl base64 -in debug_sha.txt > debug_base64.txt

14) you will get debug_base64.txt in openssl bin folder

15) open debug_base64.txt file Here is your Key hash.

Answer 6

At last :)

Here my story :

1. Add this code to your main activity, after you set layout.

   try { 
     PackageInfo info = getPackageManager().getPackageInfo("PROJECTNAME", PackageManager.GET_SIGNATURES);
     for (Signature signature : info.signatures) {
         MessageDigest md = MessageDigest.getInstance("SHA");
         md.update(signature.toByteArray());
         String sign=Base64.encodeToString(md.digest(), Base64.DEFAULT);
         Log.e("MY KEY HASH:", sign);
         //textInstructionsOrLink = (TextView)findViewById(R.id.textstring);
         //textInstructionsOrLink.setText(sign);
         Toast.makeText(getApplicationContext(),sign, Toast.LENGTH_LONG).show();
     }
   } catch (NameNotFoundException e) {
       Log.d("nope","nope");
   } catch (NoSuchAlgorithmException e) {
   }
   

2. Change PROJECTNAME to your package name!

3. Sign your app (Android Tools->Export Signed Application)
4. In your main activity where you paste code from 2 option, in your layout create TextView with id textstring
5. uncomment two lines, that your sign code would be set to TextView 6 Wuolia, you have your HASH , install app on your phone!!! and check your hash Key!
6. Now when it is visible , go to facebook app you created and add it to [Key Hashes]
7. Note that your package name should be same as on facebook [Package Name] under [Key Hashes]
8. Have a nice day :)