minimal signature verification tool (static build)

 GnuPG is GNU's tool for secure communication and data storage.
 It can be used to encrypt data and to create digital signatures.
 It includes an advanced key management facility and is compliant
 with the proposed OpenPGP Internet standard as described in RFC 4880.
 .
 This is GnuPG's signature verification tool, gpgv, built statically
 so that it can be directly used on any platform that is running on
 the Linux kernel. Android and ChromeOS are two well known examples,
 but there are many other platforms that this will work for, like
 embedded Linux OSes. This gpgv in combination with debootstrap and
 the Debian archive keyring allows the secure creation of chroot
 installs on these platforms by using the full Debian signature
 verification that is present in all official Debian mirrors.