A group of cryptographers, including former developers of the encrypted messenger Signal, has released a preview of Encrypted Spaces, a set of open-source code libraries designed to enable anyone to build end-to-end encrypted collaboration apps. The system aims to extend encryption beyond simple two-party communication to the complex, multi-user environments of tools like Slack, Discord, and Google Docs.
The Limitations of Traditional End-to-End Encryption
End-to-end encryption, where data is encoded so only users on either end of a conversation can decrypt it, has become a standard for privacy. However, as the WIRED article explains, the metaphor of a simple pipe with two openings does not fit multiuser, collaborative software. The server cannot decrypt users' data, making it difficult to support features like group conversations, shared editing, and user management without compromising privacy.
Encrypted Spaces: A New Foundation
The Encrypted Spaces team, which includes contributors from Harvard, Microsoft Research, and former Signal developers, proposes a new metaphor: instead of a pipe, they create "spaces" where users can hold group conversations, host information on a server, collectively make changes, and invite or remove collaborators—all while maintaining strong encryption that prevents the server or network eavesdroppers from accessing data. The system uses zero-knowledge proofs, a cryptographic trick that allows computers to manipulate and verify encrypted data without seeing its contents.
Team and Technical Background
Nora Trapp, an engineer at Harvard’s Applied Social Media Lab and former technical lead for Signal, described the moment as a "technological shift" where encryption and privacy can be injected into collaboration tools. Trevor Perrin, cocreator of the Signal protocol—used not only in Signal but also in billions of devices running WhatsApp and Facebook Messenger—is among the cryptographers working on the project. Matt Green, a cryptography-focused professor at Johns Hopkins, reviewed a white paper and prototype, calling Encrypted Spaces "an extension of what end-to-end encryption can be" and "the Signal protocol for collaboration apps."
Open-Source and Developer-Friendly
Unlike Signal, the released code is not a ready-to-use application but a repository for developers to build their own encrypted collaborative apps without needing cryptography knowledge. According to the article, the group is inviting cryptography researchers and developers to review the code, with the goal of making end-to-end encryption so easy that no developer would choose not to use it.
Implications for International Trade Professionals
While Encrypted Spaces is not a trade-specific tool, the technology is directly relevant to trade executives and logistics professionals who handle sensitive data such as contracts, supplier communications, and customs documentation. Secure collaboration platforms built on Encrypted Spaces could enable private conversations and document sharing across supply chains, reducing the risk of data breaches or industrial espionage. The ability to manage group access and change logs while preserving encryption aligns with the confidentiality needs of trade negotiations and cross-border compliance.
What to Watch
As the Encrypted Spaces preview undergoes review by the cryptographic community, developers may begin building pilot applications for enterprise use. Trade organizations should monitor whether major collaboration platforms adopt this architecture to enhance security for their users.
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