CRII: SaTC: Expanding the Frontiers of Cryptographic Technologies

随着我们所有的数据都转移到云端，许多新的安全和隐私问题出现了，传统的加密原语在这种情况下证明是不够的。这项研究的一个重点是推进最先进的加密技术，以解决这些新的挑战。最近关于混淆的结果，已经彻底改变了密码学家认为可行的方法。混淆的应用包括非常奇特和非常强大的密码学原语，例如，一般电路的函数加密，具有最佳通信的安全多方计算，可否认加密等（基本上，每对电路一个），或者假设的多项式集合，但是在安全性降低中具有指数损失。PI计划开发一些技术，以避免在一些最重要的应用程序中使用混淆。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