In secret: Share Sensitive Information in R Packages

knitr::opts_chunk$set(
  comment = "#",
  tidy = FALSE,
  fig.width = 8,
  fig.height = 8)

Allow sharing sensitive information, for example passwords, 'API' keys, etc., in R packages, using public key cryptography.

Disclaimer

Although the package authors did what they could to make sure that the package is secure and cryptographically sound, they are not security experts.
Memory areas for secrets, user passwords, passphrases, private keys and other sensitive information, are not securely cleaned after use! Technically, the local R process and other processes on the same computer, may have access to them. Never use this package on a public computer or any system that you don't trust. (Actually, never typing in any password on a public computer is good security practice, in general.)
Use this package at your own risk!