CNS Core: Large: Collaborative Research: Towards an Evolvable Public Key Infrastructure

传输层安全(TLS)公钥基础设施(PKI)对于互联网的成功的重要性怎么强调都不为过。从社交网络到银行，从移动设备到云计算，PKI允许通信方确定他们在与谁通信，他们的通信是保密的，他们的通信没有被篡改。尽管它的重要性令人难以置信，但众所周知，PKI很难发展来满足新的安全问题和互联网需求。这个项目为PKI的关键部分引入了新的、可部署的替代方案，以使其更具发展性、可管理性和安全性。该项目有三个主要方面。第一个引入了后续推送背后的关键使能技术，称为断言携带证书(AC)。ACCS扩展了今天的证书，能够包含少量代码(以断言的形式)作为证书验证过程的一部分进行评估。第二个重点是应用ACC，以使证书颁发机构能够更容易地适应证书委派和自动颁发的新需求。第三个推力是应用ACC和可信执行环境，使内容交付网络等网络托管服务能够安全地管理客户的密码匙。公钥基础设施的正确运行对确保一个安全、经过身份验证的互联网至关重要。最近的努力证明，在更安全的公钥基础设施方面取得进展是可能的，但需要更根本的重点来应对根本挑战。这个项目将通过开发一种新的、可扩展的方法来限制何时应该信任互联网上的身份，从而实现这一点。该项目将使扩展公钥基础设施提供的基本抽象变得简单和安全，从而使其能够发展以适应不断变化的趋势。该项目的代码和数据将公开提供并以https://securepki.orgThis奖进行维护，这反映了国家科学基金会的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The importance of the Transport Layer Security (TLS) public key infrastructure (PKI) to the success of the Internet cannot be overstated. From social networking to banking, from mobile devices to cloud computing, the PKI allows communicating parties to be sure of whom they are communicating with, that their communication is confidential, and that their communication has not been tampered with. Despite its incredible importance, the PKI has been notoriously difficult to evolve to meet new security concerns and Internet demands. This project introduces new, deployable alternatives to key parts of the PKI to make it more evolvable, manageable, and secure.The project has three primary thrusts. The first introduces a key enabling technology behind the subsequent thrusts, called assertion-carrying certificates (ACCs). ACCs expand today's certificates with the capability of including a small amount of code (in the form of assertions) to be evaluated as part of the certificate validation process. The second thrust applies ACCs to enable certificate authorities to more readily evolve to new demands for certificate delegation and automated issuance. The third thrust applies ACCs and trusted execution environments to enable web-hosting services like content delivery networks to securely manage their customers' cryptographic keys.Correct operation of the PKI is paramount to ensuring a secure, authenticated Internet. Recent efforts have proven that progress towards a more secure PKI is possible, but a more fundamental focus is needed to address the underlying challenges. This project will do just that by developing a new, extensible approach to constraining when identities on the Internet should be trusted. This project will make it straightforward and safe to extend the basic abstractions offered by the PKI, thereby enabling it to evolve to meet changing trends.The project's code and data will be made publicly available and maintained at https://securepki.orgThis award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.