Net::SSH: a pure-Ruby implementation of the SSH2 client protocol. It allows you to write programs that invoke and interact with processes on remote servers, via SSH2.

JSON Object Signing and Encryption

XSTREAM combines the X25519 Elliptic Curve Diffie-Hellman function" "with HKDF and the STREAM construction for streaming authenticated" "encryption. The result is an easy-to-use public key cryptosystem.

A Ruby gem that provides a simple interface to interact with An Post's API services, specifically for return label creation and tracking information retrieval.

Refers Ccrypto library for further info. This is the Ruby implementation of the core cryptographic API

A lowish-level SSH server library for Ruby

Resolve, create & manage Decentralized Identifiers (DIDs)