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adda59c675
Fixes linuxboot#1092.
Supersedes linuxboot#1093
- Cherry-picks ed1c23a (credit to @hardened-vault) thank you!)
- Addresses and correct self-review under linuxboot#1093 (@hardened-vault: you don't answer often here!)
- kexec-unseal-key: Warn a user who attempts to default boot while his Disk Unlock Key passphrase fails to unseal because LUKS headers changed.
(linuxboot#1093 (comment))
- kexec-seal-key: Identical as in ed1c23a
- kexec-add-key: Tell the user that the Headers did not change when changing TPM released Disk Unlock Key
(Through changing default boot at Options->Boot Options -> Show OS boot options: select a new boot option
and set a Disk Unlock Key in TPM, accept to modify disk and sign /boot options)
- Here, we cancel the diff output shown on screen linuxboot#1093 (comment)
- And we change the warning given to the user to past tense "Headers of LUKS containers to be unlocked via TPM Disk Unlock Key passphrase did not change."
Signed-off-by: Thierry Laurion <insurgo@riseup.net>