* installing *source* package ‘rcrypt’ ...
** package ‘rcrypt’ successfully unpacked and MD5 sums checked
** using staged installation
** R
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
Warning in system2("gpg", "--version", stdout = FALSE, stderr = FALSE) :
  error in running command
Error: package or namespace load failed for ‘rcrypt’:
 .onLoad failed in loadNamespace() for 'rcrypt', details:
  call: fun(libname, pkgname)
  error: Please install GPG first or check if GPG can be run from the command line.
      The rcrypt package is just an interface to GPG. See https://gnupg.org/ for
      installation guidelines.
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/Volumes/Builds/packages/big-sur-x86_64/results/4.3/rcrypt.Rcheck/rcrypt’