Hi Michael,
TF-M implements the ITS service. That statement is from the original storage design document and was pushed when there was no ITS yet, so it's outdated now. Apologies for the confusion. The level 2 certification should just require a form of secure storage but it does no have to be strictly ITS based. But I'll leave to others to better comment on this.
Thanks, Antonio ________________________________ From: Michael Khoyilar via TF-M tf-m@lists.trustedfirmware.org Sent: Monday, May 19, 2025 23:51 To: tf-m@lists.trustedfirmware.org tf-m@lists.trustedfirmware.org Subject: [TF-M] Internal Trusted Storage
Hi team,
Can you help me with this statement that “Currently, the TF-M Secure Storage service implements PSA Protected Storage version 1.0-beta2. There is not yet an implementation of PSA Internal Trusted Storage in TF-M.”
Our SoC does NOT have internal flash, but we have OTP where we keep the confidential data. Can you help how to handle this ITS situation. I wonder if PSA level-2 certification requires ITS? Thanks
BR
Michael