Your continued use of this site indicates your consent to this. Some functionality on this site may not work without them. Its function is similar to that of user names and passwords, but the keys are primarily used for automated processes and for implementing single sign-on by system administrators and power users. How does authentication in SSH work?
Every major corporation uses it, in every data center. SSH keys enable the automation that makes modern cloud services and other computer-dependent services possible and cost-effective. They offer convenience and improved security when properly managed. Functionally SSH keys resemble passwords. They grant access and control who can access what.