Keychain is a tool that manages SSH and GPG keys by maintaining a single long-running ssh-agent and gpg-agent process to minimize passphrase prompts.
A manager for ssh-agent and gpg-agent
Keychain is used to streamline the management of SSH and GPG authentication keys, allowing users to enter their passphrase only once per reboot instead of every login session. It is ideal for developers, system administrators, and anyone who frequently uses SSH or GPG keys, including automated scripts and cron jobs that require secure key access.
Keychain requires a POSIX-compliant shell environment and adherence to shell scripting best practices; users should ensure their environment supports ssh-agent and gpg-agent. It is recommended to enter passphrases once after reboot to benefit from persistent agent sessions. Contributors should use ShellCheck to maintain code quality and follow indentation and commenting guidelines.