How to create a Facebook key hash?

Question

In the Facebook android tutorial we are told to use following code to create a key hash:

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

Is this the exact code to use in all situations? For example instead of ~/.android/debug.keystore should it something like C:/folderone/foldertwo/.android/debug.keystore?

As you can see I'm unsure of whether inverted commas are required or not, whether full paths are required or not!

Is anyone able to provide a real world example?

See
https://developers.facebook.com/docs/mobile/android/build/#sso

Answer 1

try

try {
PackageInfo info = getPackageManager().getPackageInfo("com.eatapp", PackageManager.GET_SIGNATURES);
for (Signature signature : info.signatures) {
    MessageDigest md = MessageDigest.getInstance("SHA");
    md.update(signature.toByteArray());
    Log.e("MY KEY HASH:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
}
} catch (NameNotFoundException e) {

} catch (NoSuchAlgorithmException e) {

}

in your main Activity :-) This is the only solution it works for me for Android SDK 3.0

Answer 2

You can create this way

keytool -exportcert -alias androiddebugkey -keystore c:\Users\<your windows default user>\.android\debug.keystore | openssl sha1 -binary | openssl base64

Enter keystore password: android

Answer 3

 /**
     * Generates the hash key used for Facebook console to register app. It can also be used for other sdks) Method copied from: https://developers.facebook.com/docs/android/getting-started/
     */
    public static String printHashKey(Context ctx) {
        // Add code to print out the key hash
        try {
            PackageInfo info = ctx.getPackageManager().getPackageInfo(ctx.getPackageName(), PackageManager.GET_SIGNATURES);
            for (Signature signature : info.signatures) {
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(signature.toByteArray());
                return Base64.encodeToString(md.digest(), Base64.DEFAULT);
            }
        } catch (NameNotFoundException e) {
            return "SHA-1 generation: the key count not be generated: NameNotFoundException thrown";
        } catch (NoSuchAlgorithmException e) {
            return "SHA-1 generation: the key count not be generated: NoSuchAlgorithmException thrown";
        }

        return "SHA-1 generation: epic failed";
    }