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How do they get around the crypto signature checks that the CPU does before loading a microcode patch?
by craftyguy 8y ago
How do they get around the crypto signature checks that the CPU does before loading a microcode patch?
- arkadiyt 8y agoFrom [1]: "Most update mechanisms are protected by signatures or other cryptographic primitives. However there were some indications that older CPU models (until around 2013) do not have a strong cryptographic protection and thus would accept custom updates." [1]: https://media.ccc.de/v/34c3-9058-everything_you_want_to_know_about_x86_microcode_but_might_have_been_afraid_to_ask https://media.ccc.de/v/34c3-9058-everything_you_want_to_know...