nilog:

Introduction | Libsodium documentation
https://doc.libsodium.org/

> Sodium is a modern, easy-to-use software library for encryption, decryption, signatures, password hashing, and more.

libsodium package : Ubuntu
https://launchpad.net/ubuntu/+source/libsodium

> libsodium-dev: Network communication, cryptography and signaturing library - headers
> libsodium23: Network communication, cryptography and signaturing library
> libsodium23-dbgsym: debug symbols for libsodium23

Introduction | Libsodium documentation
https://doc.libsodium.org/

> Sodium is a modern, easy-to-use software library for encryption, decryption, signatures, password hashing, and more.

トマトソーススパゲッティ(ﾟдﾟ)ｳﾏｰ