By Topic

Cryptographic key assignment scheme for overcoming the incorrectness of the CHW scheme

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $33
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
J. -H. Wen ; Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chia-Yi, Taiwan ; J. -S. Sheu ; T. -S. Chen

Based on Newton's interpolation method and a predefined one-way function, a cryptographic key assignment scheme, called the CHW scheme, in a user hierarchy was presented by Chang et al. (1992). The CHW scheme did not need the large amount of storage needed in the Akl-Taylor (1983) scheme. However, two counter-examples have been presented to prove the incorrectness of the CHW scheme, and further two modified versions of the CHW scheme were also proven to be insecure. Owing to these problems, a simple scheme is proposed to overcome the incorrectness and to enhance the security of the CHW scheme

Published in:

IEE Proceedings - Communications  (Volume:148 ,  Issue: 4 )