Client Certificate Authentication with Spring Boot

https://medium.com/geekculture/authentication-using-certificates-7e2cfaacd18b

# Define a custom port instead of the default 8080
server.port=8443

# Tell Spring Security (if used) to require requests over HTTPS
security.require-ssl=true

# The format used for the keystore 
server.ssl.key-store-type=PKCS12
# The path to the keystore containing the certificate
server.ssl.key-store=classpath:keystore.p12
# The password used to generate the certificate
server.ssl.key-store-password= {your password here}
# The alias mapped to the certificate
server.ssl.key-alias=tomcat