The current web is largely designed to enable surveillance capitalism, which, while having its benefits, has limitations. Data generated through both online and offline activities is funneled through centralized systems where administrators exercise control over the flow and handling of this information. User-centric systems aim for "absolute user control," a notion that has advanced in finance with blockchain technology but has yet to make its mark effectively in human communication. Though the ideas surrounding decentralization — such as encryption, borderless information transfer, and eliminating middlemen — are appealing, they face significant barriers due to the centralized design tendencies of both the internet and tech giants.
This dissatisfaction has ignited technological revolts aimed at creating a fully peer-based internet. Various pioneering platforms like Napster, Freenet, and BitTorrent have made notable progress but continue to grapple with issues such as peer-to-peer (P2P) indexing and throughput, leaving users largely dependent on the centralized internet of today.
Central to the problem is privacy, which is essential to basic human interaction. Addressing this, Tether is developing the Holepunch protocol, a solution designed to navigate past Network Address Translation (NAT) barriers to facilitate stable communication between autonomous devices.
Breaking Through NAT Barriers
The key challenge in secure P2P communication is overcoming NAT, a method that prevents IP address exhaustion while enabling scalable routing by mapping different networks’ IP address spaces. Tether’s Holepunch protocol leverages Hyperswarm, which establishes connections across varying NAT mappings using a Distributed Hash Table (DHT).
Hyperswarm utilizes a Kademlia-based DHT, connecting devices via cryptographic key pairs. The public key is used as a global address. To connect, devices undergo a Noise IK handshake through the DHT, determine the type of NAT involved, and send encrypted packets via randomly selected DHT nodes until a direct UDP communication channel is established. Once a connection is made, Hyperswarm enhances this to a secure, reliable stream using libsodium’s secretstream and libudx’s ordered UDP streams, all without requiring centralized servers.
Facilitating Portable Private Communication
One of Hyperswarm’s innovative features is its ability to allow peers on consistent NATs to connect directly with those on randomized NATs through advanced hole-punching techniques. To boost connectivity, peers can utilize a blind relay, which acts as an intermediary for encrypted traffic during the direct connection process, ensuring communication remains intact even when direct paths fail.
Expanding Use Cases
Tether’s advancements with Holepunch technology are integrated into Pears, an open-source, native P2P runtime and deployment platform based on the Bare modular JavaScript engine. This setup enables developers to create scalable P2P systems. Notable applications utilizing this technology include:
- Keet: A secure messaging app.
- PearPass: A password management tool.
- QVAC Workbench: An AI-powered personal assistant.
- QVAC Health: An intelligent health management app.
The Unstoppable Web Is Possible
With millions already using Keet for private messaging via Holepunch technology, Tether is dismantling the barriers created by centralization, empowering users with control over their communications. The applications stemming from the Holepunch protocol and Pear runtime highlight the pursuit of a new, resilient, and scalable internet that prioritizes user privacy.
Tether is at the forefront of making the concepts of an unstoppable web a reality, paving the way for future P2P communication innovations.
