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signing.bbclass: add get_root_cert

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Add a helper method to retrieve the root CA certificate for a given
role, by walking the chain that has been setup with
signing_import_set_ca up to the last element - which is the root.

Reviewed-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Johannes Schneider <johannes.schneider@leica-geosystems.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Johannes Schneider 2025-06-27 14:18:19 +02:00 committed by Khem Raj
parent 5b315e2fc4
commit f642526db5
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1 changed files with 16 additions and 0 deletions
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16
meta-oe/classes/signing.bbclass
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@ -194,6 +194,22 @@ signing_has_ca() {
return $?
}
# signing_get_root_cert <cert_name>
#
# return the role/name of the CA root certificate for a given
# <cert_name>, by walking the chain setup with signing_import_set_ca
# all the way to the last in line that doesn't have a CA set - which
# would be the root.
#
# To be used with SoftHSM.
signing_get_root_cert() {
local cert_name="${1}"
while signing_has_ca "${cert_name}"; do
cert_name="$(signing_get_ca ${cert_name})"
done
echo "${cert_name}"
}
# signing_import_cert_chain_from_pem <role> <pem>
#
# Import a certificate *chain* from a PEM file to a role.