1#!/bin/sh
2#
3# Copyright The Mbed TLS Contributors
4# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
5
6set -eu
7
8: ${OPENSSL:=openssl}
9NB=20
10
11OPT="-days 3653 -sha256"
12
13# generate self-signed root
14$OPENSSL ecparam -name prime256v1 -genkey -out 00.key
15$OPENSSL req -new -x509 -subj "/C=UK/O=mbed TLS/CN=CA00" $OPT \
16             -key 00.key -out 00.crt
17
18# cXX.pem is the chain starting at XX
19cp 00.crt c00.pem
20
21# generate long chain
22i=1
23while [ $i -le $NB ]; do
24    UP=$( printf "%02d" $((i-1)) )
25    ME=$( printf "%02d" $i )
26
27    $OPENSSL ecparam -name prime256v1 -genkey -out ${ME}.key
28    $OPENSSL req -new -subj "/C=UK/O=mbed TLS/CN=CA${ME}" \
29                 -key ${ME}.key -out ${ME}.csr
30    $OPENSSL x509 -req -CA ${UP}.crt -CAkey ${UP}.key -set_serial 1 $OPT \
31                  -extfile int.opensslconf -extensions int \
32                  -in ${ME}.csr -out ${ME}.crt
33
34    cat ${ME}.crt c${UP}.pem > c${ME}.pem
35
36    rm ${ME}.csr
37    i=$((i+1))
38done
39