I guess from a hardware cryptography module or OPTEE[1] [1] https://optee.readthedocs.io/en/latest/general/about.html https://optee.readthedocs.io/en/latest/ge

I guess from a hardware cryptography module or OPTEE[1] [1] https://optee.readthedocs.io/en/latest/general/about.html https://optee.readthedocs.io/en/latest/general/about.html