Release-Keys and Test-Keys detection

在编译期间检查内核签名密钥

Release-Keys and Test-Keys have 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.