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16 Through a set of secure services and by design, TF-M provides:
73 foundation upon which to build or access trusted services and resources.
85 * PSA Updateable Root of Trust: most trusted secure services
86 * Application Root of Trust (**ARoT**): isolated secure services
97 services and components in TF-M, such as the Secure Partition Manager (SPM),
98 and shared secure services like PSA Crypto, Internal Trusted Storage (ITS),
99 etc. Services in the PSA Updateable Root of Trust have access to other
104 building TF-M, has limited access to the PRoT, or even other ARoT services at
105 the highest isolation levels. Some standard services exist in the ARoT, such as
106 Protected Storage (PS), and generally custom secure services that you implement
130 where ARoT services have limited access to PRoT services, and can only
131 communicate with them through public APIs exposed by the PRoT services.
132 ARoT services, however, are not strictly isolated from one another.
134 2 by isolating ARoT services from each other, so that each ARoT is
135 essentially silo'ed from other services. This provides the highest level of
137 duplication between services.
186 our device will be initially configured, and any secure services will be
196 Secure Services
199 As of TF-M 1.8.0, the following secure services are generally available (although vendor support ma…
210 A template also exists for creating your own custom services.
212 For full details on these services, and their exposed APIs, please consult the