Binary package “nettle-dbg” in ubuntu xenial

low level cryptographic library (debugging symbols)

 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 the debugging symbols for all binary packages.