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由 AKASHI Takahiro 提交于
With this commit, EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS is supported for authenticated variables and the system secure state will transfer between setup mode and user mode as UEFI specification section 32.3 describes. Internally, authentication data is stored as part of authenticated variable's value. It is nothing but a pkcs7 message (but we need some wrapper, see efi_variable_parse_signature()) and will be validated by efi_variable_authenticate(), hence efi_signature_verify_with_db(). Associated time value will be encoded in "{...,time=...}" along with other UEFI variable's attributes. Signed-off-by: NAKASHI Takahiro <takahiro.akashi@linaro.org>
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