1#!/bin/sh
2#
3# Copyright The Mbed TLS Contributors
4# SPDX-License-Identifier: Apache-2.0
5#
6# Licensed under the Apache License, Version 2.0 (the "License"); you may
7# not use this file except in compliance with the License.
8# You may obtain a copy of the License at
9#
10# http://www.apache.org/licenses/LICENSE-2.0
11#
12# Unless required by applicable law or agreed to in writing, software
13# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
14# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15# See the License for the specific language governing permissions and
16# limitations under the License.
17
18set -eu
19
20: ${OPENSSL:=openssl}
21NB=20
22
23OPT="-days 3653 -sha256"
24
25# generate self-signed root
26$OPENSSL ecparam -name prime256v1 -genkey -out 00.key
27$OPENSSL req -new -x509 -subj "/C=UK/O=mbed TLS/CN=CA00" $OPT \
28             -key 00.key -out 00.crt
29
30# cXX.pem is the chain starting at XX
31cp 00.crt c00.pem
32
33# generate long chain
34i=1
35while [ $i -le $NB ]; do
36    UP=$( printf "%02d" $((i-1)) )
37    ME=$( printf "%02d" $i )
38
39    $OPENSSL ecparam -name prime256v1 -genkey -out ${ME}.key
40    $OPENSSL req -new -subj "/C=UK/O=mbed TLS/CN=CA${ME}" \
41                 -key ${ME}.key -out ${ME}.csr
42    $OPENSSL x509 -req -CA ${UP}.crt -CAkey ${UP}.key -set_serial 1 $OPT \
43                  -extfile int.opensslconf -extensions int \
44                  -in ${ME}.csr -out ${ME}.crt
45
46    cat ${ME}.crt c${UP}.pem > c${ME}.pem
47
48    rm ${ME}.csr
49    i=$((i+1))
50done
51