CAJ | 학술논문

秘密共享是安全地保存信息和数据的一种重要方法,介绍了一些典型的门限秘密共享方案以及分析了它们的一些不足.在Amir-Herzberg动态方案中必须所有参与者要求更新子秘密时,才可以发起更新子秘密.对Amir-Herzberg动态方案进行了改进,只要参与者中的部分人(甚至少于门限值)就可发起更新子秘密,此方案在某些条件下更具有灵活性.
비밀공향시안전지보존신식화수거적일충중요방법,개소료일사전형적문한비밀공향방안이급분석료타문적일사불족.재Amir-Herzberg동태방안중필수소유삼여자요구경신자비밀시,재가이발기경신자비밀.대Amir-Herzberg동태방안진행료개진,지요삼여자중적부분인(심지소우문한치)취가발기경신자비밀,차방안재모사조건하경구유령활성.
Secret sharing is one of the important way to save securely important information and data.In this paper,it discusses some typical schemes on the threshold secret sharing scheme,and analyzes the shortcomings of these scheme in applications.InAmir-Herzberg's dynamic scheme,when all of shareholders want to update,then they can update the old secret shadow.This paper presents a threshold dynamic secret sharing scheme to improve Amir-Herzberg's dynamic scheme,and some of the shareholders (maybe less than the threshold) can update the old secret shadow with new secret shadows periodically.This scheme has a better flexibility under the specific condition.