ohmyzsh/plugins/otp/README.md

otp plugin

This plugin allows you to create one-time passwords using oathtool,
able to replace MFA devices. The oathtool key is kept in a GPG-encrypted file so the codes
can only be generated by a user able to decrypt it.

To use it, add otp to the plugins array in your zshrc file:

plugins=(... otp)

Provided aliases:

• otp_add_device: creates a new encrypted storage for an oathtool key and stores it
  on the disk. For encrypting the key, it will ask for a GPG user ID (your GPG key's
  email address). Then the OTP key needs to be pasted, followed by a CTRL+D character
  inserted on an empty line.

• ot: generates a MFA code based on the given key and copies it to the clipboard
  (on Linux it relies on xsel, on MacOS X it uses pbcopy instead).

The plugin uses $HOME/.otp to store its internal files.