you have to trust more than 1 company with device security (yes), FDE key is stored in software (yes). LGTM.
"Since the key is available to TrustZone, the hardware makers can simply create and sign a TrustZone image"
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The article claims Google has access, which isn't true, and it implies that Qualcomm might have access - they don't.
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It does not imply Qualcomm has access.
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It explicitly says that Qualcomm does not have access.
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The article doesn't do that. It presents a claim that it does, and then in parentheses notes Qualcomm disagrees.
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The article says a Qualcomm spokesperson disputes the claim. It leans toward implying that the claim is correct (no).
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He qualifies Beniamini's theory as "speculation", certainly clear to me what side he's on.
End of conversation
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hardware maker = OEM, so this is accurate?
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The article is correct in presenting hardware as the hardware maker. And the OEM flashes the fuses to set the keys.
End of conversation
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