TPM chips are not a mythical thing that only Google makes.
STM makes the ST33 series of TPM that I would trust a hell of a lot more than google to not have a dozen government backdoors.
Microchip, Analog Devices, Infineon, NXP, and onsemi also make TPM chips of varying security levels. Infineon is the premium TPM maker with the highest security if I remember right, a German company.
The issue is they are 3-10€ for the chip alone, which is a significant BOM cost, and it takes a lot of very specific knowledge in firmware and software to actually implement and google probably keeps the android integration methods very hidden. It is very much an intentional vendor lock out.
TPM chips are not a mythical thing that only Google makes.
STM makes the ST33 series of TPM that I would trust a hell of a lot more than google to not have a dozen government backdoors.
Microchip, Analog Devices, Infineon, NXP, and onsemi also make TPM chips of varying security levels. Infineon is the premium TPM maker with the highest security if I remember right, a German company.
The issue is they are 3-10€ for the chip alone, which is a significant BOM cost, and it takes a lot of very specific knowledge in firmware and software to actually implement and google probably keeps the android integration methods very hidden. It is very much an intentional vendor lock out.