密码学中的随机预言模型与标准模型

摘要

随机预言模型与标准模型是密码学可证明安全理论中非常重要的两类模型.在此对这两种模型进行了描述,并研究了运用它们证明密码方案或协议安全性时所采取的不同技术,包括随机预言模型在加密和数字签名方案中的应用研究,以及标准模型下可证明安全性理论在加密方案中的应用研究.此外对进一步研究方向进行了展望.%The random oracle model and standard model are two important ones in the theory of provable security in cryptography. These two models are described and the different technique for proving cryptographic scheme and protocol security when using these models is researched. The application research on the random oracle model in encryption and digital signature schemes, and the theory of provable security under standard model in encryption scheme was carried out. The further research direction is pointed out.