Internal Program Version: Nettle  3.10.2

Nettle is a cryptographic library that is designed to fit easily in more or
less any context: In crypto toolkits for object-oriented languages (C++,
Python, Pike, ...), in applications like LSH or GNUPG, or even in kernel space.

This package contains a few command-line tools to perform cryptographic
operations using the nettle library.

http://www.lysator.liu.se/~nisse/nettle