Methods, computer program products, and systems are presented. The methods include, for instance: receiving a request for a private credential of a first service of the two or more services from the first service, generating the private credential of the first service based on identity information of the first service, storing the private credential of the first service and the identity information of the first service in a local database, and sending the private credential of the first service to the first service for secure communication from the first service.