Paper Info
Title
A Modified Chaos-Based Joint Compression and Encryption Scheme
Abstract
An approach for improving the compression performance of an existing chaos-based joint compression and encryption scheme is proposed. The lookup table used for encryption is dynamically updated in the searching process. Once a partition not matched with the target symbol is visited, this and other partitions mapped to the same symbol are reallocated to a nonvisited symbol. Therefore, the target symbol eventually associates with more partitions and fewer number of iterations are needed to find it. As a result, expansion of the ciphertext is avoided, and the compression ratio is improved. Simulation results show that the proposed modification leads to a better compression performance, whereas the execution efficiency is comparable. The security of the modified scheme is also analyzed in detail.
Year
DOI
Venue
2011
10.1109/TCSII.2011.2106316
IEEE Trans. on Circuits and Systems
Keywords
Field
DocType
MULTIMEDIA,CRYPTOGRAPHY,DESIGN
Lookup table,Cryptography,Algorithm,Encryption,Compression ratio,Ciphertext,Data compression,Partition (number theory),Trajectory,Mathematics
Journal
Volume
Issue
ISSN
58
2
1549-7747
Citations 
PageRank 
References 
21
1.31
11
Authors
3
Name
Order
Citations
PageRank
Jianyong Chen172240.93
Junwei Zhou211816.64
Kwok-Wo Wong3125593.89