From: "Yao, Jiewen" <jiewen.yao@intel.com>
To: "Xu, Min M" <min.m.xu@intel.com>,
"devel@edk2.groups.io" <devel@edk2.groups.io>
Cc: "Wang, Jian J" <jian.j.wang@intel.com>
Subject: Re: [PATCH V2 1/1] SecurityPkg/TdTcg2Dxe: Extend EFI boot variable to PCR[1]
Date: Wed, 18 Jan 2023 00:15:26 +0000 [thread overview]
Message-ID: <MW4PR11MB587267C2895C9287685ECEC78CC79@MW4PR11MB5872.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20230117235326.600-1-min.m.xu@intel.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
> -----Original Message-----
> From: Xu, Min M <min.m.xu@intel.com>
> Sent: Wednesday, January 18, 2023 7:53 AM
> To: devel@edk2.groups.io
> Cc: Xu, Min M <min.m.xu@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>;
> Wang, Jian J <jian.j.wang@intel.com>
> Subject: [PATCH V2 1/1] SecurityPkg/TdTcg2Dxe: Extend EFI boot variable to
> PCR[1]
>
> From: Min M Xu <min.m.xu@intel.com>
>
> According to TCG PC Client PFP spec 0021 Section 2.4.4.2 EFI boot variable
> should be measured and extended to PCR[1], not PCR[5]. This patch is
> proposed to fix this error.
>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Jian J Wang <jian.j.wang@intel.com>
> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
> Signed-off-by: Min Xu <min.m.xu@intel.com>
> ---
> SecurityPkg/Tcg/TdTcg2Dxe/TdTcg2Dxe.c | 6 +-----
> 1 file changed, 1 insertion(+), 5 deletions(-)
>
> diff --git a/SecurityPkg/Tcg/TdTcg2Dxe/TdTcg2Dxe.c
> b/SecurityPkg/Tcg/TdTcg2Dxe/TdTcg2Dxe.c
> index d19923b0c682..59341a8c0250 100644
> --- a/SecurityPkg/Tcg/TdTcg2Dxe/TdTcg2Dxe.c
> +++ b/SecurityPkg/Tcg/TdTcg2Dxe/TdTcg2Dxe.c
> @@ -1873,12 +1873,8 @@ ReadAndMeasureBootVariable (
> OUT VOID **VarData
> )
> {
> - //
> - // Boot variables are measured into (PCR[5]) RTMR[1],
> - // details in section 8.1 of TDVF design guide.
> - //
> return ReadAndMeasureVariable (
> - MapPcrToMrIndex (5),
> + MapPcrToMrIndex (1),
> EV_EFI_VARIABLE_BOOT,
> VarName,
> VendorGuid,
> --
> 2.29.2.windows.2
next prev parent reply other threads:[~2023-01-18 0:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-17 23:53 [PATCH V2 1/1] SecurityPkg/TdTcg2Dxe: Extend EFI boot variable to PCR[1] Min Xu
2023-01-18 0:15 ` Yao, Jiewen [this message]
[not found] ` <173B3EFE3FEA3093.24231@groups.io>
2023-01-18 4:33 ` [edk2-devel] " Yao, Jiewen
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