TWC: Small: Bridging the Gap Between Cutting-Edge Cryptography and Practice

云正日益成为我们日常生活、商业生态系统和整个社会不可或缺的一部分。最近，尖端的密码系统已经开发出来，为许多与云相关的任务提供了有史以来第一个理论解决方案。这些任务包括对加密数据的细粒度访问控制、以最小的通信开销向一组接收者广播、在公共代码中隐藏秘密等等。不幸的是，由于严重的计算效率低下，以及新的、因此不太了解的潜在计算假设，这些最新的系统还远远没有做好部署的准备。这项研究通过提高应用程序的效率和安全性，使尖端的加密应用程序更接近实践。一个特别的焦点是程序混淆，这是一个强大的新工具，是最近许多密码学理论进展的核心。该项目为混淆和其他相关加密工具开发了新的结构和安全分析，产生了更有效的协议，并增加了我们对其安全性的信心。此外，教育是该项目不可或缺的一部分，因为PI开发了新的密码学课程，并为本科生和研究生提供建议，以培养下一代学者和实践者。

The cloud is becoming increasingly integral to our daily lives, the business ecosystem, and society at large. Recently, cutting-edge cryptosystems have been developed that provide the first-ever theoretical solutions to many cloud-related tasks. Such tasks include fine-grained access control to encrypted data, broadcasting to a set of recipients with minimal communication overhead, hiding secrets in public code, and much more. Unfortunately, these recent systems are far from being ready for deployment, due both to significant computational inefficiencies and to new and thus little-understood underlying computational assumptions.This research is bringing cutting-edge cryptographic applications closer to practice by improving the efficiency and security of said applications. A particular focus is program obfuscation, a powerful new tool at the heart of many of the recent theoretical advances in cryptography. This project develops new constructions and security analyses for obfuscation and other related cryptographic tools, yielding more efficient protocols and increasing our confidence in their security. In addition, education is integral to this project, as the PI develops new cryptography courses and advises undergraduates and graduate students alike in order to cultivate the next generation of scholars and practitioners.