Check kernel sign key during compilation.

Release-Keys and Test-Keys has to do with how the kernel is signed when it is compiled.

Release-Keys means it was signed with an official Key from an official developer. Test-Keys means it was signed with a custom key generated by a third-party developer. From a security standpoint Release-Keys generally means the kernel is more secure, which is not always the case.

We will get the key using android.os.Build.TAGS

Your task is to bypass test key check process and get the flag. you can verify your flag at http://ctf.hpandro.raviramesh.info