ciphertext policy attribute-based encryption from lattices: extended abstract

ISCAS OpenIR

	ciphertext policy attribute-based encryption from lattices: extended abstract
	Zhang Jiang; Zhang Zhenfeng; Ge Aijun
	2012
会议名称	7th ACM Symposium on Information, Computer and Communications Security, ASIACCS 2012
会议录名称	ASIACCS 2012 - 7th ACM Symposium on Information, Computer and Communications Security
页码	16-17
会议日期	May 2, 2012 - May 4, 2012
会议地点	Seoul, Korea, Republic of
收录类别	EI
ISBN	9781450313032
部门归属	(1) State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing 100190 China; (2) Department of Applied Mathematics Zhengzhou Information Science and Technology Institute Zhengzhou Henan 450002 China
摘要	Sahai and Waters [6] proposed Attribute-Based Encryption (ABE) as a new paradigm of encryption algorithms that allow the sender to set a policy describing who can decrypt a particular ciphertext. In this paper, we first propose a cipher-text policy attribute-based encryption (CP-ABE) scheme from lattices, which supports flexible threshold access policies on literal (or boolean) attributes. Then we extend it to support multi-valued attributes without increasing the public key and ciphertext size. Our scheme's master secret key has only one matrix despite of the number of the system's attributes. The security of our schemes is based on the worstcase hardness on lattices. © 2012 ACM.; Sahai and Waters [6] proposed Attribute-Based Encryption (ABE) as a new paradigm of encryption algorithms that allow the sender to set a policy describing who can decrypt a particular ciphertext. In this paper, we first propose a cipher-text policy attribute-based encryption (CP-ABE) scheme from lattices, which supports flexible threshold access policies on literal (or boolean) attributes. Then we extend it to support multi-valued attributes without increasing the public key and ciphertext size. Our scheme's master secret key has only one matrix despite of the number of the system's attributes. The security of our schemes is based on the worstcase hardness on lattices. © 2012 ACM.
关键词	Abstracting Security Of Data
主办者	ACM Spec. Interest Group Secur., Audit, Control (SIGSAC); Korea Communications Commission (KCC); Korea Internet and Security Agency (KISA)
语种	英语
内容类型	会议论文
URI标识	http://ir.iscas.ac.cn/handle/311060/15828
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Zhang Jiang,Zhang Zhenfeng,Ge Aijun. ciphertext policy attribute-based encryption from lattices: extended abstract[C],2012:16-17.