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| author | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2021-02-19 12:45:16 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-04-14 15:23:01 -0400 |
| commit | fb6532ec6c0c247dc204f65cb298d0865f7eaf3b (patch) | |
| tree | 1633e6aa1c3d35f5da2b3df936166f54d5990a93 /doc | |
| parent | f91de329abb6f3a247758354bccb172070ccc4ac (diff) | |
| download | u-boot-fb6532ec6c0c247dc204f65cb298d0865f7eaf3b.tar.gz u-boot-fb6532ec6c0c247dc204f65cb298d0865f7eaf3b.tar.xz u-boot-fb6532ec6c0c247dc204f65cb298d0865f7eaf3b.zip | |
doc: signature.txt: Document the keydir and keyfile arguments
After lots of debating, this documents how we'd like mkimage to treat
'keydir' and 'keyfile' arguments. The rest is in the docs.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/uImage.FIT/signature.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/uImage.FIT/signature.txt b/doc/uImage.FIT/signature.txt index 0139295d33..d9a9121190 100644 --- a/doc/uImage.FIT/signature.txt +++ b/doc/uImage.FIT/signature.txt @@ -472,6 +472,19 @@ Test Verified Boot Run: signed config with bad hash: OK Test passed +Software signing: keydir vs keyfile +----------------------------------- + +In the simplest case, signing is done by giving mkimage the 'keyfile'. This is +the path to a file containing the signing key. + +The alternative is to pass the 'keydir' argument. In this case the filename of +the key is derived from the 'keydir' and the "key-name-hint" property in the +FIT. In this case the "key-name-hint" property is mandatory, and the key must +exist in "<keydir>/<key-name-hint>.<ext>" Here the extension "ext" is +specific to the signing algorithm. + + Hardware Signing with PKCS#11 or with HSM ----------------------------------------- |