Confidentiality is a portable framework for doing message authentication, message encryption, stream encryption and key exchange for various programming languages.
HMAC-SHA-256 for message authentication,
AES-GCM for message
AES-GCM+AES-CTR for stream encryption and
X25519+PBKDF2-HMAC-SHA-256 for key exchange.
The BrandMeister network was established by several worldwide HAM radio operators and software engineers who joined together to create a digital repeater network consisting of master servers and peer repeaters all over the world, sharing a lot of similarities with other decentralised communication technologies such as LTE.
The network has over 1300 repeaters and more than 3000 hotspots across the globe and it’s growing every day.