Add support for signing PCR policies for the initrd - #4404
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I'll be looking at this next week, since I'm a bit swamped this one. |
The way that NvPCRs are initialized and anchored in systemd is changing, and to support this, the UKI needs to include signed PCR policies that can only be satisfied during the initrd, as these are used to authorize NvPCR initialization. This is enabled with a new --sign-initrd-pcrs option for ukify. This adds a new "SignInitrdPCRs=" option to control this. The default is "auto" which will turn on this option if PCR signing is enabled and ukify is new enough. The corresponding systemd PR is systemd/systemd#42796
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The way that NvPCRs are initialized and anchored in systemd is changing,
and to support this, the UKI needs to include signed PCR policies that
can only be satisfied during the initrd, as these are used to authorize
NvPCR initialization. This is enabled with a new
--sign-initrd-pcrsoption for ukify.
This adds a new "SignInitrdPCRs=" option to control this. The default is
"auto" which will turn on this option if PCR signing is enabled and
ukify is new enough.
The corresponding systemd PR is systemd/systemd#42796