1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
#!/bin/sh
################################################################################
# Copyright (c) 2016, The Linux Foundation. All rights reserved. #
# #
# Redistribution and use in source and binary forms, with or without #
# modification, are permitted provided that the following conditions are #
# met: #
# * Redistributions of source code must retain the above copyright #
# notice, this list of conditions and the following disclaimer. #
# * Redistributions in binary form must reproduce the above #
# copyright notice, this list of conditions and the following #
# disclaimer in the documentation and/or other materials provided #
# with the distribution. #
# * Neither the name of The Linux Foundation nor the names of its #
# contributors may be used to endorse or promote products derived #
# from this software without specific prior written permission. #
# #
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED #
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF #
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT #
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS #
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR #
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF #
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR #
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, #
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE #
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN #
# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #
# #
# THIS IS A WORKAROUND TO GET LK INTO THE PROPER FORMAT, #
# NO SECURITY IS BEING PROVIDED BY THE OPENSSL CALLS #
################################################################################
INFILE=""
OUTFILE=""
DIR=$(dirname $0)
EXECUTABLE="$DIR/signer/signlk"
CN=""
OU=""
set -e
for i in "$@"; do
case $i in
-i=*|--in=*)
INFILE="${i#*=}"
;;
-o=*|--out=*)
OUTFILE="${i#*=}"
;;
-OU=*|-ou=*)
OU="${i#*=}"
;;
-CN=*|-cn=*)
CN="${i#*=}"
;;
--tmpdir=*)
tmpdir="${i#*=}"
mkdir -p $tmpdir
NOCLEAN=1
;;
-d|--debug)
set -x
NOCLEAN=1
;;
-h*|--help*)
echo "signlk -i=input_file_name [-o=output_file_name]"
echo "-i input ELF/MBN file name"
echo "-o output file name, input_file_name with suffix of 'signed' as default "
echo "-cn common name "
echo "-ou organization unit "
echo "--tmpdir specify tmp folder to use"
exit 0
;;
*)
echo "unsupported option" # unknown option
echo "type signlk --help for help"
exit 1
;;
esac
done
if [ "$INFILE" = "" ]; then
echo "signlk -i=input_file_name [-o=output_file_name]"
exit 2
fi
INFILE_filename=$(echo $INFILE | rev | cut -f 2- -d '.' | rev)
if [ "$OUTFILE" = "" ]; then
OUTFILE=$INFILE_filename"_signed.mbn"
fi
echo "generating output file $OUTFILE"
[ -z $tmpdir ] && tmpdir=$(mktemp -d)
TMPOUTFILE=$tmpdir/"tmp.elf"
if [ ! "$(openssl version)" ]; then
echo "please install openssl"
exit 6
fi
if [ ! "$(make -v)" ]; then
echo "please install gcc"
exit 7
fi
if [ ! "$(g++ --version)" ]; then
echo "please install g++"
exit 8
fi
make -C $DIR/signer
if [ "$?" != 0 ]; then
echo " failed to build executable"
exit 5
fi
$EXECUTABLE $INFILE $TMPOUTFILE $tmpdir
openssl sha256 -binary $tmpdir/header > $tmpdir/data
cat $tmpdir/hash>> $tmpdir/data
for f in $tmpdir/segment*; do
openssl sha256 -binary $f >> $tmpdir/data
done
openssl sha256 -binary $tmpdir/data > $tmpdir/stp0
cat $tmpdir/Si > $tmpdir/tmpDigest0
cat $tmpdir/stp0 >> $tmpdir/tmpDigest0
openssl sha256 -binary $tmpdir/tmpDigest0 > $tmpdir/stp1
cat $tmpdir/So > $tmpdir/tmpDigest1
cat $tmpdir/stp1 >> $tmpdir/tmpDigest1
openssl sha256 -binary $tmpdir/tmpDigest1 > $tmpdir/dataToSign.bin
DATA=$tmpdir/data
CODE=$tmpdir/dataToSign.bin
SIG=$tmpdir/sig
ATT=$tmpdir/atte.DER
ROOT=$tmpdir/root.DER
tmp_att_file=$tmpdir/e.ext
echo "authorityKeyIdentifier=keyid,issuer" >> $tmp_att_file
echo "basicConstraints=CA:FALSE,pathlen:0" >> $tmp_att_file
echo "keyUsage=digitalSignature" >> $tmp_att_file
openssl version > $tmpdir/days
openssl req -new -x509 -keyout $tmpdir/root_key.PEM -nodes -newkey rsa:2048 -days 7300 -set_serial 1 -sha256 -subj "/CN=DRAGONBOARD TEST PKI – NOT SECURE/O=S/OU=01 0000000000000009 SW_ID/OU=02 0000000000000000 HW_ID" -out $tmpdir/root_certificate.PEM 2>/dev/null
openssl x509 -in $tmpdir/root_certificate.PEM -inform PEM -outform DER -out $ROOT 2>/dev/null
openssl genpkey -algorithm RSA -outform PEM -pkeyopt rsa_keygen_bits:2048 -pkeyopt rsa_keygen_pubexp:3 -out $tmpdir/atte_key.PEM 2>/dev/null
openssl req -new -key $tmpdir/atte_key.PEM -subj "/CN=DRAGONBOARD TEST PKI – NOT SECURE/OU=01 0000000000000009 SW_ID/OU=02 0000000000000000 HW_ID" -days 7300 -out $tmpdir/atte_csr.PEM 2>/dev/null
openssl x509 -req -in $tmpdir/atte_csr.PEM -CAkey $tmpdir/root_key.PEM -CA $tmpdir/root_certificate.PEM -days 7300 -set_serial 1 -extfile $tmp_att_file -sha256 -out $tmpdir/atte_cert.PEM 2>/dev/null
openssl x509 -in $tmpdir/atte_cert.PEM -inform PEM -outform DER -out $ATT 2>/dev/null
openssl pkeyutl -sign -inkey $tmpdir/atte_key.PEM -in $CODE -out $SIG 2>/dev/null
data_file_size=$(du -b $DATA | tr '[:blank:]' ' ' | cut -d ' ' -f 1)
code_file_size=$(du -b $CODE | tr '[:blank:]' ' ' | cut -d ' ' -f 1)
sig_file_size=$(du -b $SIG | tr '[:blank:]' ' ' | cut -d ' ' -f 1)
atte_file_size=$(du -b $ATT | tr '[:blank:]' ' ' | cut -d ' ' -f 1)
root_file_size=$(du -b $ROOT | tr '[:blank:]' ' ' | cut -d ' ' -f 1)
hash_seg_file_size=$(du -b $tmpdir/hashSeg | tr '[:blank:]' ' ' | cut -d ' ' -f 1)
hash_seg_offset=4096
mi_hdr_size=$(tr -d '\0' < $tmpdir/sectionSize)
dd if=$TMPOUTFILE of=$OUTFILE 2>/dev/null
dd if=$DATA of=$OUTFILE bs=1 count=$data_file_size seek=$(($hash_seg_offset+$mi_hdr_size)) 2>/dev/null
dd if=$SIG of=$OUTFILE count=$sig_file_size bs=1 seek=$(($hash_seg_offset+$mi_hdr_size+$data_file_size)) 2>/dev/null
dd if=$ATT of=$OUTFILE count=$atte_file_size bs=1 seek=$(($hash_seg_offset+$mi_hdr_size+$data_file_size+$sig_file_size)) 2>/dev/null
dd if=$ROOT of=$OUTFILE count=$root_file_size bs=1 seek=$(($hash_seg_offset+$mi_hdr_size+$data_file_size+$sig_file_size+$atte_file_size)) 2>/dev/null
dd if=$tmpdir/hashSeg of=$OUTFILE bs=1 skip=$(($mi_hdr_size+$data_file_size+$sig_file_size+$atte_file_size+$root_file_size)) seek=$(($hash_seg_offset+$mi_hdr_size+$data_file_size+$sig_file_size+$atte_file_size+$root_file_size)) 2>/dev/null
dd if=$TMPOUTFILE of=$OUTFILE bs=1 skip=$(($hash_seg_offset+$hash_seg_file_size)) seek=$(($hash_seg_offset+$hash_seg_file_size)) 2>/dev/null
# no cleanup in debug mode
if [ -z $NOCLEAN ]; then
rm -rf $tmpdir
fi
echo "signlk: signed ELF file is $OUTFILE"
|
