Google Play Integrity API Key Generation

I'm looking for an expert who can help me generate fresh keys for Google Play integrity API.

Specifics:
- Type of keys: I need assistance with key integrity of Google Play.
- Key Generation: The main focus is on generating these keys.
- Purpose: The generated keys will primarily be used for data encryption.

Ideal Skills:
- Proficiency with Google Play integrity APIs.
- Experience in key generation.
- Understanding of data encryption processes.

Example: I've attached one xml file. we've code in any language that can generate that file. after generation of file in rooted android device its needs to be replace in specific location then have to check integrity using apk from playstore "https://play.google.com/store/apps/details?id=gr.nikolasspyr.integritycheck".

For unrooted android device, if user directly install apk and click on check in the app then shows all 3 sign green. as attached in "Screenshot1".

For rooted android device, if user directly install apk and click on check in the app then it shows cross(red) sign. as attached in "Screenshot2". Developer need to generate correct integrity file (keyboard.xml)

External Link for more understanding: https://appuals.com/pass-strong-device-play-integrity/

There are many sources in telegram then generating keybox.xml file for passing play integrity. So I want the same