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IEICE TRANSACTIONS on Fundamentals

A Perfect-Reconstruction Encryption Scheme by Using Periodically Time-Varying Digital Filters

Xuedong YANG, Masayuki KAWAMATA, Tatsuo HIGUCHI

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Summary :

This letter proposes a Perfect-Reconstruction (PR) encryption scheme based on a PR QMF bank. Using the proposed scheme, signals can be encrypted and reconstructed perfectly by using two Periodically Time-Varying (PTV) digital filters respectively. Also we find that the proposed scheme has a "good" encryption effect and compares favorably with frequency scramble in the aspects of computation complexity, PR property, and degree of security.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E81-A No.1 pp.192-196
Publication Date
1998/01/25
Publicized
Online ISSN
DOI
Type of Manuscript
Category
Digital Signal Processing

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