A novel key management scheme for dynamic access control in a user hierarchy

2004 ◽  
Author(s):  
Tzer-Shyong Chen ◽  
Yu-Fang Chung ◽  
Chang-Sin Tian
Keyword(s):  
Access Control ◽  
Key Management ◽  
Management Scheme ◽  
User Hierarchy ◽  
Key Management Scheme ◽  
Dynamic Access Control

scholarly journals An Efficient and Secure Key Management Scheme for Hierarchical Access Control Based on ECC

2011 ◽  
pp. 50-55
Author(s):  
Laxminath Tripathy ◽  
Nayan Ranjan Paul
Keyword(s):  
Access Control ◽  
Key Management ◽  
Elliptic Curve Cryptosystem ◽  
Secret Key ◽  
Management Scheme ◽  
User Hierarchy ◽  
Secret Keys ◽  
Access Problems ◽  
Efficient Scheme ◽  
Key Management Scheme

In a key management scheme for hierarchy based access control, each security class having higher clearance can derive the cryptographic secret keys of its other security classes having lower clearances. In 2006 Jeng-Wang proposed an efficient scheme on access control in user hierarchy based on elliptic curve cryptosystem. Their scheme provides solution of key management efficiently for dynamic access problems. However, in this paper, we propose an attack on Jeng-Wang scheme to show that Jeng-Wang scheme is insecure against our proposed attack. We show that in our proposed attack, an attacker (adversary) who is not a user in any security class in a user hierarchy attempts to derive the secret key of a security class .

scholarly journals An efficient key management scheme for content access control for linear hierarchies

2012 ◽  
Vol 56 (8) ◽  
pp. 2107-2118 ◽  
Author(s):  
Hani Ragab Hassen ◽  
Hatem Bettahar ◽  
Abdalmadjid Bouadbdallah ◽  
Yacine Challal
Keyword(s):  
Access Control ◽  
Key Management ◽  
Management Scheme ◽  
Linear Hierarchies ◽  
Key Management Scheme
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