An Efficient Key Management Scheme for Access Control in a User Hierarchy

2009 ◽  
Author(s):  
Jianmin Zhang ◽  
Jian Li ◽  
Xiande Liu
Keyword(s):  
Access Control ◽  
Key Management ◽  
Management Scheme ◽  
User Hierarchy ◽  
Key Management Scheme

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

scholarly journals An Efficient Key Management Scheme for Secure Data Access Control in Wireless Broadcast Services

2012 ◽  
pp. 1-8
Author(s):  
K. V. Rajesh ◽  
P. Harini
Keyword(s):  
Access Control ◽  
Key Management ◽  
Data Access ◽  
Communication Overhead ◽  
Wireless Broadcast ◽  
Logical Key Hierarchy ◽  
Data Access Control ◽  
Management Scheme ◽  
Access To Data ◽  
Key Management Scheme

Wireless broadcast is an effective approach to disseminate data to a number of users. To provide secure access to data in wireless broadcast services, symmetric key - based encryption is used to ensure that only users who own the valid keys can decrypt the data. Regarding various subscriptions, an efficient key management to distribute and change keys is in great demand for access control in broadcast services. In this paper, we propose an efficient key management scheme (namely KTR) to key distribution with regarding to complex subscription options and user activities. KTR has the following advantages. First, it supports all subscription activities in wireless broadcast services. Second, in KTR, a user only needs to hold one set of keys for all subscribed programs, instead of separate sets of keys for each program. Third, KTR identifies the minimum set of keys that must be changed to ensure broadcast security and minimize the rekey cost. Our simulations show that KTR can save about 45% of communication overhead in the broadcast channel and about 50% of decryption cost for each user, compared with logical key hierarchy based approaches.

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