This report is based on publicly available information and general knowledge of Android device security mechanisms. Specific details about the Tecno IN5 authentication file, such as its exact format and cryptographic algorithms used, may not be publicly disclosed due to their sensitive nature.
Never flash a firmware package that claims to "repair IMEI" using an auth file unless you have a legal backup of your original IMEI numbers. Changing IMEI is a criminal offense in many countries. tecno in5 auth file