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Secureboot modifications for ephemeral key signing #499

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Merged
lguohan merged 2 commits into from
Oct 18, 2025
Merged

Secureboot modifications for ephemeral key signing #499

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829d337
Secureboot modifications for ephemeral key signing
bradh352 Jul 13, 2025
d48dad1
Merge branch 'master' into secureboot
saiarcot895 Sep 24, 2025
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3 changes: 2 additions & 1 deletion Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ CONFIGURED_ARCH ?= amd64
CONFIGURED_PLATFORM ?= vs
SECURE_UPGRADE_MODE ?=
SECURE_UPGRADE_SIGNING_CERT ?=
SECURE_UPGRADE_KERNEL_CAFILE ?= $(SECURE_UPGRADE_SIGNING_CERT)

LINUX_HEADER_COMMON = linux-headers-$(KVERSION_SHORT)-common_$(KERNEL_VERSION)-$(KERNEL_SUBVERSION)_all.deb
LINUX_HEADER_AMD64 = linux-headers-$(KVERSION)_$(KERNEL_VERSION)-$(KERNEL_SUBVERSION)_$(CONFIGURED_ARCH).deb
Expand Down Expand Up @@ -104,7 +105,7 @@ $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :

# Optionally add/remove kernel options
if [ -f ../manage-config ]; then
../manage-config $(CONFIGURED_ARCH) $(CONFIGURED_PLATFORM) $(SECURE_UPGRADE_MODE) $(SECURE_UPGRADE_SIGNING_CERT)
../manage-config $(CONFIGURED_ARCH) $(CONFIGURED_PLATFORM) $(SECURE_UPGRADE_MODE) $(SECURE_UPGRADE_KERNEL_CAFILE)
fi

# Building a custom kernel from Debian kernel source
Expand Down
12 changes: 6 additions & 6 deletions manage-config
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Expand Up @@ -27,7 +27,7 @@
ARCH=amd64
PLATFORM=
SECURE_UPGRADE_MODE="no_sign"
SECURE_UPGRADE_SIGNING_CERT=
SECURE_UPGRADE_KERNEL_CAFILE=
if [ $# -ge 1 ]; then
ARCH=$1
fi
Expand All @@ -38,7 +38,7 @@ if [ $# -ge 3 ]; then
SECURE_UPGRADE_MODE=$3
fi
if [ $# -ge 4 ]; then
SECURE_UPGRADE_SIGNING_CERT=$4
SECURE_UPGRADE_KERNEL_CAFILE=$4
fi

case "$ARCH" in
Expand Down Expand Up @@ -163,12 +163,12 @@ ret_process_inc_ex=$?

# Secure Boot support
if [ $ret_process_inc_ex -eq 0 ]; then
echo "Secure Boot params: SECURE_UPGRADE_MODE=${SECURE_UPGRADE_MODE}, SECURE_UPGRADE_SIGNING_CERT=${SECURE_UPGRADE_SIGNING_CERT}"
echo "Secure Boot params: SECURE_UPGRADE_MODE=${SECURE_UPGRADE_MODE}, SECURE_UPGRADE_KERNEL_CAFILE=${SECURE_UPGRADE_KERNEL_CAFILE}"
if [ ${SECURE_UPGRADE_MODE} == "dev" -o ${SECURE_UPGRADE_MODE} == "prod" ]; then
echo "set kconfig-secure-boot-exclusions & kconfig-secure-boot-inclusions"

if [ ! -f "${SECURE_UPGRADE_SIGNING_CERT}" ]; then
echo "ERROR: SECURE_UPGRADE_SIGNING_CERT=${SECURE_UPGRADE_SIGNING_CERT} file does not exist"
if [ ! -f "${SECURE_UPGRADE_KERNEL_CAFILE}" ]; then
echo "ERROR: SECURE_UPGRADE_KERNEL_CAFILE=${SECURE_UPGRADE_KERNEL_CAFILE} file does not exist"
exit 1
fi

Expand All @@ -177,7 +177,7 @@ if [ $ret_process_inc_ex -eq 0 ]; then
force_inclusion_file="../patch/kconfig-force-secure-boot-inclusions"

# save the new pub key in kernel
sed -i "s|^CONFIG_SYSTEM_TRUSTED_KEYS=.*|CONFIG_SYSTEM_TRUSTED_KEYS=\"$SECURE_UPGRADE_SIGNING_CERT\"|g" ${inclusion_file}
sed -i "s|^CONFIG_SYSTEM_TRUSTED_KEYS=.*|CONFIG_SYSTEM_TRUSTED_KEYS=\"$SECURE_UPGRADE_KERNEL_CAFILE\"|g" ${inclusion_file}

process_inclusion_exclusion_files
ret_process_inc_ex=$?
Expand Down