security

Administer keychains, keys, certificates and the Security framework. More information: https://ss64.com/osx/security.html.

• List all available keychains:
  security list-keychains
• Delete a specific keychain:
  security delete-keychain {{path/to/file.keychain}}
• Create a keychain:
  security create-keychain -p {{password}} {{path/to/file.keychain}}
• Set a certificate to use with a website or [s]ervice by its [c]ommon name (fails if several certificates with the same common name exist):
  security set-identity-preference -s {{URL|hostname|service}} -c "{{common_name}}" {{path/to/file.keychain}}
• Add a certificate from file to a [k]eychain (if -k isn't specified, the default keychain is used):
  security add-certificates -k {{file.keychain}} {{path/to/cert_file.pem}}
• Add a CA certificate to the per-user Trust Settings:
  security add-trusted-cert -k {{path/to/user-keychain.keychain-db}} {{path/to/ca-cert_file.pem}}
• Remove a CA certificate from the per-user Trust Settings:
  security remove-trusted-cert {{path/to/ca-cert_file.pem}}