Qt：用Rust开发的后量子加密端到端通讯系统原型发布

Qt是一个采用Rust语言实现的开源后量子加密端到端通讯系统核心原型1。该项目在仅占用124MB内存的条件下支持10000个并发连接1，实现了X3DH、PQXDH（后量子密钥交换）、Double Ratchet、Sealed Sender和Noise Protocol等多项关键加密协议1。

项目采用AGPL-3.0开源许可和商业双重授权模式1，Android应用已在真实设备上进行了测试验证，但仅作为技术概念验证使用1。开发动机包括应对欧盟Chat Control法律讨论，以及实现无需电话号码、基于密钥的身份认证机制1。

Qt目前仍处于原型阶段，尚未适用于生产环境1。项目的缺失功能包括完整的用户界面、互联网可访问的服务器部署、TLS保护、联邦化多服务器支持以及独立的安全审计1。虽然已通过自动化测试验证，但在这些关键功能补全和安全审计完成前，该系统不可用于实际生产部署1。

Qt is an open-source messenger core implemented in Rust that demonstrates post-quantum cryptography capabilities for end-to-end encrypted communications.1 The prototype supports over 10,000 concurrent connections while consuming only 124 MB of RAM.1 The system incorporates multiple cryptographic protocols, including X3DH, PQXDH (post-quantum variant), Double Ratchet, Sealed Sender, and Noise Protocol.1

The project has been validated through automated testing and has run successfully on Android devices as a technical proof of concept.1 However, the developers have explicitly stated that the system is not yet production-ready, with several critical components still missing.1 These gaps include a complete user interface, an internet-accessible server deployment, TLS protection, federated multi-server architecture, and independent security auditing.1

Qt operates under a dual licensing model, offering both AGPL-3.0 open-source licensing and commercial licensing options.1 According to the project documentation, the initiative was motivated partly by discussions surrounding the European Union's Chat Control legislation, with a focus on enabling identity management through cryptographic keys rather than phone numbers.1 The messenger core encompasses encryption, transport, server, and storage modules as integrated components of the system architecture.1