Encrypted Spaces is, in some sense, the next generation of the Signal protocol, but for more complex and fully featured tools that go beyond messaging and calls, says Matt Green, a cryptography-focused professor of computer science at Johns Hopkins. “They’ve built a system that’s kind of an extension of what end-to-end encryption can be, where you have an actual architecture for doing end-to-end encrypted collaboration,” says Green, who reviewed a white paper outlining the Encrypted Spaces project and a prototype application. “You can think of it as the Signal protocol for collaboration apps.” Unlike Signal, however, the code that the Encrypted Spaces group has released is, for now, not a single, ready-for-use application. Instead, it’s a code repository that the group is inviting cryptography researchers and developers to review, with the goal of eventually allowing coders to build their own encrypted collaborative apps—but without needing any cryptography knowledge. “We want to make it so there’s no reason a developer wouldn’t want to make their application end-to-end encrypted, because it becomes so easy,” Trapp says. Change …