wolfssl-examples/can-bus/generate_ssl.sh

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#!/bin/sh
# Generate self signed root CA cert
openssl req -nodes -x509 -newkey rsa:2048 -keyout ca.key -out ca.crt -subj "/C=GB/ST=London/L=Lon1/O=wolfSSL/OU=root/CN=`hostname -f`/emailAddress=info@wolfssl.com"
# Generate server cert to be signed
openssl req -nodes -newkey rsa:2048 -keyout server.key -out server.csr -subj "/C=GB/ST=London/L=Lon1/O=wolfSSL/OU=server/CN=`hostname -f`/emailAddress=info@wolfssl.com"
# Sign the server cert
openssl x509 -req -in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out server.crt
# Create server PEM file
cat server.key server.crt > server.pem
# Generate client cert to be signed
openssl req -nodes -newkey rsa:2048 -keyout client.key -out client.csr -subj "/C=GB/ST=London/L=Lon1/O=wolfSSL/OU=client/CN=`hostname -f`/emailAddress=info@wolfssl.com"
# Sign the client cert
openssl x509 -req -in client.csr -CA ca.crt -CAkey ca.key -CAserial ca.srl -out client.crt
# Create client PEM file
cat client.key client.crt > client.pem