【摘要】 数据要素已经成为国家战略，高效打通数据孤岛，安全保障数据要素流通，成为重要的研究课题。密态计算技术以密码学为核心，能够在加密数据上执行密文计算、检索、访问控制等功能，是解决数据安全和保障数据要素流通的关键技术。首先，介绍了密态计算的背景以及技术内涵，阐述密态计算所采用的同态加密、安全多方计算等技术路线；其次，综述了美国在密态计算领域算法、软件工具、芯片等方面的重大项目，并分析得出其具有体系化部署、密码加速突破、产业链协同战略特点；最后，给出密态计算发展相关建议。更多还原

【Abstract】 The data element has become a national strategy. Efficiently bridging data silos and securing the flow of data elements become important research topics. Centered on cryptography, encrypted computing is able to perform cipher computing, retrieval, and access control operations on encrypted data, which is the key technology to address data security and guarantee the flow of data elements. This paper introduces the background and technical connotation of encrypted computing, describes the homomorphic encryption, secure multi-party computing and other technical routes used in encrypted computing, summarizes the major projects of the United States in the field of algorithms, software tools,chips, etc., and analyzes and concludes that it has the systematic deployment, cryptographic intensification of the breakthroughs, and industrial chain synergistic strategic characteristics, and finally gives the recommendations related to the development of encrypted computing.更多还原