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home-automation/tools/create-client-cert.sh
Wolfgang Hottgenroth bb27296310
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mTLS
2025-11-29 21:35:35 +01:00

73 lines
2.4 KiB
Bash
Executable File

#!/bin/bash
set -e
# Check if client name is provided
if [ $# -eq 0 ]; then
echo "Usage: $0 <client-name>"
echo "Example: $0 john.doe"
exit 1
fi
CLIENT_NAME="$1"
# Check if CA exists
if [ ! -f "ca/ca.crt" ] || [ ! -f "ca/ca.key" ]; then
echo "Error: CA not found. Please run setup-ca.sh first."
exit 1
fi
echo "=== Creating Client Certificate ==="
echo "Client Name: $CLIENT_NAME"
# Create client directory
mkdir -p clients/$CLIENT_NAME
# Generate client private key
echo "Generating client private key..."
openssl genrsa -out clients/$CLIENT_NAME/$CLIENT_NAME.key 2048
# Generate client certificate signing request
echo "Generating client certificate signing request..."
openssl req -new -key clients/$CLIENT_NAME/$CLIENT_NAME.key \
-out clients/$CLIENT_NAME/$CLIENT_NAME.csr \
-subj "/DC=de/DC=hottis/DC=homea2/CN=$CLIENT_NAME"
# Sign the client certificate
echo "Signing client certificate..."
openssl x509 -req -in clients/$CLIENT_NAME/$CLIENT_NAME.csr \
-CA ca/ca.crt -CAkey ca/ca.key -CAcreateserial \
-out clients/$CLIENT_NAME/$CLIENT_NAME.crt \
-days 365 -sha256
# Create PKCS#12 bundle
echo "Creating PKCS#12 bundle..."
openssl pkcs12 -export \
-out clients/$CLIENT_NAME/$CLIENT_NAME.p12 \
-inkey clients/$CLIENT_NAME/$CLIENT_NAME.key \
-in clients/$CLIENT_NAME/$CLIENT_NAME.crt \
-certfile ca/ca.crt \
-name "$CLIENT_NAME Home Automation Client" \
-passout pass:
# Set appropriate permissions
chmod 400 clients/$CLIENT_NAME/$CLIENT_NAME.key
chmod 644 clients/$CLIENT_NAME/$CLIENT_NAME.crt
chmod 644 clients/$CLIENT_NAME/$CLIENT_NAME.p12
# Verify client certificate
echo "Verifying client certificate..."
openssl x509 -noout -text -in clients/$CLIENT_NAME/$CLIENT_NAME.crt
echo ""
echo "=== Client Certificate Created ==="
echo "Client Certificate: clients/$CLIENT_NAME/$CLIENT_NAME.crt"
echo "Client Private Key: clients/$CLIENT_NAME/$CLIENT_NAME.key"
echo "PKCS#12 Bundle: clients/$CLIENT_NAME/$CLIENT_NAME.p12"
echo ""
echo "Installation Instructions:"
echo "1. Import the PKCS#12 file into your browser/application"
echo "2. The bundle contains both the client certificate and CA certificate"
echo "3. No password is set for the PKCS#12 file (you can add one by modifying the -passout parameter)"
echo ""
echo "For testing with curl:"
echo "curl --cert clients/$CLIENT_NAME/$CLIENT_NAME.crt --key clients/$CLIENT_NAME/$CLIENT_NAME.key --cacert ca/ca.crt https://homea2.hottis.de/"