Sign in-toto link or layout metadata or verify their signatures. More information: https://in-toto.readthedocs.io/en/latest/command-line-tools/in-toto-sign.html.
in-toto-sign {{[-f|--file]}} {{unsigned.layout}} {{[-k|--keep]}} {{priv_key1}} {{priv_key2}} {{[-o|--output]}} {{root.layout}}
in-toto-sign {{[-f|--file]}} {{package.2f89b927.link}} {{[-k|--keep]}} {{priv_key}}
in-toto-sign {{[-f|--file]}} {{root.layout}} {{[-k|--keep]}} {{pub_key0}} {{pub_key1}} {{pub_key2}} --verify
in-toto-sign {{[-f|--file]}} {{root.layout}} {{[-g|--gpg]}}
in-toto-sign {{[-f|--file]}} {{root.layout}} --verify {{[-g|--gpg]}} {{...439F3C2}}