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#!/bin/bash
#
#
# This scripts generates:
# - root CA certificate
# - server certificate and keystore
# - client keys
#
# https://cwiki.apache.org/confluence/display/KAFKA/Deploying+SSL+for+Kafka
#
if [[ "$1" == "-k" ]]; then
USE_KEYTOOL=1
shift
else
USE_KEYTOOL=0
fi
OP="$1"
CA_CERT="$2"
PFX="$3"
HOST="$4"
C=NN
ST=NN
L=NN
O=NN
OU=NN
CN="$HOST"
# Password
PASS="abcdefgh"
# Cert validity, in days
VALIDITY=10000
set -e
export LC_ALL=C
if [[ $OP == "ca" && ! -z "$CA_CERT" && ! -z "$3" ]]; then
CN="$3"
openssl req -new -x509 -keyout ${CA_CERT}.key -out $CA_CERT -days $VALIDITY -passin "pass:$PASS" -passout "pass:$PASS" <<EOF
${C}
${ST}
${L}
${O}
${OU}
${CN}
$USER@${CN}
.
.
EOF
elif [[ $OP == "server" && ! -z "$CA_CERT" && ! -z "$PFX" && ! -z "$CN" ]]; then
#Step 1
echo "############ Generating key"
keytool -storepass "$PASS" -keypass "$PASS" -keystore ${PFX}server.keystore.jks -alias localhost -validity $VALIDITY -genkey -keyalg RSA <<EOF
$CN
$OU
$O
$L
$ST
$C
yes
yes
EOF
#Step 2
echo "############ Adding CA"
keytool -storepass "$PASS" -keypass "$PASS" -keystore ${PFX}server.truststore.jks -alias CARoot -import -file $CA_CERT <<EOF
yes
EOF
#Step 3
echo "############ Export certificate"
keytool -storepass "$PASS" -keypass "$PASS" -keystore ${PFX}server.keystore.jks -alias localhost -certreq -file ${PFX}cert-file
echo "############ Sign certificate"
openssl x509 -req -CA $CA_CERT -CAkey ${CA_CERT}.key -in ${PFX}cert-file -out ${PFX}cert-signed -days $VALIDITY -CAcreateserial -passin "pass:$PASS"
echo "############ Import CA"
keytool -storepass "$PASS" -keypass "$PASS" -keystore ${PFX}server.keystore.jks -alias CARoot -import -file $CA_CERT <<EOF
yes
EOF
echo "############ Import signed CA"
keytool -storepass "$PASS" -keypass "$PASS" -keystore ${PFX}server.keystore.jks -alias localhost -import -file ${PFX}cert-signed
elif [[ $OP == "client" && ! -z "$CA_CERT" && ! -z "$PFX" && ! -z "$CN" ]]; then
if [[ $USE_KEYTOOL == 1 ]]; then
echo "############ Creating client truststore"
[[ -f ${PFX}client.truststore.jks ]] || keytool -storepass "$PASS" -keypass "$PASS" -keystore ${PFX}client.truststore.jks -alias CARoot -import -file $CA_CERT <<EOF
yes
EOF
echo "############ Generating key"
keytool -storepass "$PASS" -keypass "$PASS" -keystore ${PFX}client.keystore.jks -alias localhost -validity $VALIDITY -genkey -keyalg RSA <<EOF
$CN
$OU
$O
$L
$ST
$C
yes
yes
EOF
echo "########### Export certificate"
keytool -storepass "$PASS" -keystore ${PFX}client.keystore.jks -alias localhost -certreq -file ${PFX}cert-file
echo "########### Sign certificate"
openssl x509 -req -CA ${CA_CERT} -CAkey ${CA_CERT}.key -in ${PFX}cert-file -out ${PFX}cert-signed -days $VALIDITY -CAcreateserial -passin pass:$PASS
echo "########### Import CA"
keytool -storepass "$PASS" -keypass "$PASS" -keystore ${PFX}client.keystore.jks -alias CARoot -import -file ${CA_CERT} <<EOF
yes
EOF
echo "########### Import signed CA"
keytool -storepass "$PASS" -keypass "$PASS" -keystore ${PFX}client.keystore.jks -alias localhost -import -file ${PFX}cert-signed
else
# Standard OpenSSL keys
echo "############ Generating key"
openssl genrsa -des3 -passout "pass:$PASS" -out ${PFX}client.key 2048
echo "############ Generating request"
openssl req -passin "pass:$PASS" -passout "pass:$PASS" -key ${PFX}client.key -new -out ${PFX}client.req \
<<EOF
$C
$ST
$L
$O
$OU
$CN
.
$PASS
.
EOF
echo "########### Signing key"
openssl x509 -req -passin "pass:$PASS" -in ${PFX}client.req -CA $CA_CERT -CAkey ${CA_CERT}.key -CAcreateserial -out ${PFX}client.pem -days $VALIDITY
fi
else
echo "Usage: $0 ca <ca-cert-file> <CN>"
echo " $0 [-k] server|client <ca-cert-file> <file_prefix> <hostname>"
echo ""
echo " -k = Use keytool/Java Keystore, else standard SSL keys"
exit 1
fi
|
