keychain is a utility that helps manage ssh keys in a convenient and secure manner. It acts as a frontend to ssh-agent, but allows the user to easily have one long running ssh-agent process per system, rather than the norm of one ssh-agent per login session. It also makes it easy for remote cron jobs to securely hook-in to a long running ssh-agent process, allowing your scripts to take advantage of key-based logins.
7784773ca4eaed559c0ad7be1d9a0b7c3d96bad1be03696a3dffa90458737a22