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#!/bin/sh
set -eu
: ${OPENSSL:=openssl}
NB=20
OPT="-days 3653 -sha256"
# generate self-signed root
$OPENSSL ecparam -name prime256v1 -genkey -out 00.key
$OPENSSL req -new -x509 -subj "/C=UK/O=mbed TLS/CN=CA00" $OPT \
-key 00.key -out 00.crt
# cXX.pem is the chain starting at XX
cp 00.crt c00.pem
# generate long chain
i=1
while [ $i -le $NB ]; do
UP=$( printf "%02d" $((i-1)) )
ME=$( printf "%02d" $i )
$OPENSSL ecparam -name prime256v1 -genkey -out ${ME}.key
$OPENSSL req -new -subj "/C=UK/O=mbed TLS/CN=CA${ME}" \
-key ${ME}.key -out ${ME}.csr
$OPENSSL x509 -req -CA ${UP}.crt -CAkey ${UP}.key -set_serial 1 $OPT \
-extfile int.opensslconf -extensions int \
-in ${ME}.csr -out ${ME}.crt
cat ${ME}.crt c${UP}.pem > c${ME}.pem
rm ${ME}.csr
i=$((i+1))
done
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