ecdsautils software package provides ECDSA elliptic curve cryptography command line tools, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ecdsautils
ecdsautils is installed in your system.
Make ensure the ecdsautils package were installed using the commands given below,
$ sudo dpkg-query -l | grep ecdsautils *
You will get with ecdsautils package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Utilities |
| Package | ecdsautils |
| Version | 0.3.2+git20151018-2 |
| Description | ECDSA elliptic curve cryptography command line tools |
| Sub Section | Utils |