Binary package “libpgp-sign-perl” in ubuntu bionic
Perl module to create detached PGP signatures
PGP::Sign creates and checks detached PGP signatures for textual data
using GnuPG. Other PGP implementations are also supported with run-time
configuration. Secret key passphrases are passed via a pipe, and no
temporary files are required for signature generation (but are for
signature verification).