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by dmitrygr 1192 days ago
not the same at all. Trustzone is a special mode of the very same main CPU (more like intel's SMM), whereas PSP and ME are a separate core
1 comments
elromulous 1192 days ago
More specifically, trustzone is the arm equivalent of Intel's (mostly deprecated) sgx.

https://en.m.wikipedia.org/wiki/Software_Guard_Extensions

link