CRII: SaTC: Expanding the Frontiers of Cryptographic Technologies

随着我们所有的数据都转移到云上，出现了许多新的安全和隐私问题，而传统的加密原语被证明在这种情况下是不够的。这项研究的一个关键重点是推进应对这些新挑战的密码技术的最新水平。最近关于混淆的结果，已经极大地改变了密码学家认为可行的东西。混淆的应用包括非常奇怪和非常强大的密码原语，如用于一般电路的函数加密、具有最优通信的安全多方计算、可否认加密等。不幸的是，已知的模糊实现及其应用要么依赖于指数数量的假设(基本上，每对电路一个)，要么依赖于多项式的假设集，但在安全性降低方面具有指数损失。PI计划开发一些技术，以避免在其一些最重要的应用中使用模糊处理。欲了解更多信息，请访问项目网站：www.cs.berkeley.edu/~sanjamg

As all our data moves to the cloud many new security and privacy concerns arise and traditional cryptographic primitives prove insufficient in such scenarios. A key focus of this research is to advance the state of the art on cryptographic techniques that address these new challenges. Recent results on obfuscation, have drastically changed what cryptographers thought as feasible. Applications of obfuscation include very exotic and extremely powerful cryptographic primitives such as, functional encryption for general circuits, secure multiparty computation with optimal communication, deniable encryption and so on. Unfortunately, known realizations of obfuscation, and therefore its applications, rely either on an exponential number of assumptions (basically, one per every pair of circuits), or a polynomial set of assumptions but with an exponential loss in security reduction. The PI plans to develop techniques for circumventing the use of obfuscation in some of its most important applications. For further information see the project web site at: www.cs.berkeley.edu/~sanjamg