Sign files & verify signatures. Works with signify in OpenBSD

Current versions

Revision: 1

minisign requires the following formulae to be installed:
libsodium 1.0.16 NaCl networking and cryptography library
cmake 3.10.2 Cross-platform make

Recent formula history

ilovezfs Audit fixes for descriptions (#20013)
ilovezfs Use “squiggly” heredocs.
ilovezfs minisign: use assert_predicate instead of File.exist?
Dominyk Tiller minisign: revision bump for libsodium
Bryan Black minisign 0.7

Formula code at GitHub