mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2026-01-10 01:21:49 +00:00
dfbdbd3147
sign.sh runs openssl and other linux utilities to generate rsa-pss signatures for a prebuilt bootimage and then uses cbootimage option --update to update bootimage's rsa signatures and rsa modulus. Syntax: sign.sh <bootimage> <rsa_key.pem> Signed-off-by: Jimmy Zhang <jimmzhang@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
74 lines
2.6 KiB
Bash
Executable File
74 lines
2.6 KiB
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify it
|
|
# under the terms and conditions of the GNU General Public License,
|
|
# version 2, as published by the Free Software Foundation.
|
|
#
|
|
# This program is distributed in the hope it will be useful, but WITHOUT
|
|
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
# more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
# See file CREDITS for list of people who contributed to this
|
|
# project.
|
|
#
|
|
set -e
|
|
IMAGE_FILE=$1
|
|
KEY_FILE=$2
|
|
TARGET_IMAGE=$IMAGE_FILE
|
|
CONFIG_FILE=config.tmp
|
|
|
|
CBOOTIMAGE=../src/cbootimage
|
|
BCT_DUMP=../src/bct_dump
|
|
OBJCOPY=objcopy
|
|
OPENSSL=openssl
|
|
DD=dd
|
|
RM=rm
|
|
MV=mv
|
|
XXD=xxd
|
|
CUT=cut
|
|
|
|
echo "Get rid of all temporary files: *.sig, *.tosig, *.tmp *.mod"
|
|
$RM -f *.sig *.tosig *.tmp *.mod
|
|
|
|
echo "Get bl length "
|
|
BL_LENGTH=`$BCT_DUMP $IMAGE_FILE | grep "Bootloader\[0\].Length"\
|
|
| awk -F ' ' '{print $4}' | awk -F ';' '{print $1}'`
|
|
|
|
echo "Extract bootloader to $IMAGE_FILE.bl.tosig, length $BL_LENGTH"
|
|
$DD bs=1 skip=32768 if=$IMAGE_FILE of=$IMAGE_FILE.bl.tosig count=$BL_LENGTH
|
|
|
|
echo "Calculate rsa signature for bootloader and save to $IMAGE_FILE.bl.sig"
|
|
$OPENSSL dgst -sha256 -sigopt rsa_padding_mode:pss -sigopt rsa_pss_saltlen:-1 \
|
|
-sign $KEY_FILE -out $IMAGE_FILE.bl.sig $IMAGE_FILE.bl.tosig
|
|
|
|
echo "Update bootloader's rsa signature, aes hash and bct's aes hash"
|
|
echo "RsaPssSigBlFile = $IMAGE_FILE.bl.sig;" > $CONFIG_FILE
|
|
echo "RehashBl;" >> $CONFIG_FILE
|
|
$CBOOTIMAGE -s tegra210 -u $CONFIG_FILE $IMAGE_FILE $IMAGE_FILE.tmp
|
|
|
|
echo "Extract the part of bct which needs to be rsa signed"
|
|
$DD bs=1 if=$IMAGE_FILE.tmp of=$IMAGE_FILE.bct.tosig count=8944 skip=1296
|
|
|
|
echo "Calculate rsa signature for bct and save to $IMAGE_FILE.bct.sig"
|
|
$OPENSSL dgst -sha256 -sigopt rsa_padding_mode:pss -sigopt rsa_pss_saltlen:-1 \
|
|
-sign $KEY_FILE -out $IMAGE_FILE.bct.sig $IMAGE_FILE.bct.tosig
|
|
|
|
echo "Create public key modulus from key file $KEY_FILE and save to $KEY_FILE.mod"
|
|
$OPENSSL rsa -in $KEY_FILE -noout -modulus -out $KEY_FILE.mod
|
|
# remove prefix
|
|
$CUT -d= -f2 < $KEY_FILE.mod > $KEY_FILE.mod.tmp
|
|
|
|
# convert from hexdecimal to binary
|
|
$XXD -r -p -l 256 $KEY_FILE.mod.tmp $KEY_FILE.mod.bin
|
|
|
|
echo "Update bct's rsa signature and modulus"
|
|
echo "RsaPssSigBctFile = $IMAGE_FILE.bct.sig;" > $CONFIG_FILE
|
|
echo "RsaKeyModulusFile = $KEY_FILE.mod.bin;" >> $CONFIG_FILE
|
|
$CBOOTIMAGE -s tegra210 -u $CONFIG_FILE $IMAGE_FILE.tmp $TARGET_IMAGE
|