Fast decryption utilizing correlation calculation for BSS-based speech encryption system

Guo, Da-Peng; Lin, Qiu‐Hua

doi:10.1109/icnc.2010.5582616

Cited by 5 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Once the mixture signals x ( t ) = [ x 1 ( t ), x 2 ( t ),…, x p ( t )] T are received, the key signals I are regenerated by the secret seed I 0 and the key signals II are produced by the chaotic system using the initial conditions. Usually, BSS is then performed [ 2 , 17 ] to recover original signals. But in this paper, we employ approximate calculation to recover original signals.…”

Section: Proposed Methodsmentioning

confidence: 99%

Dual Key Speech Encryption Algorithm Based Underdetermined BSS

Zhao

Zuo

et al. 2014

The Scientific World Journal

View full text Add to dashboard Cite

When the number of the mixed signals is less than that of the source signals, the underdetermined blind source separation (BSS) is a significant difficult problem. Due to the fact that the great amount data of speech communications and real-time communication has been required, we utilize the intractability of the underdetermined BSS problem to present a dual key speech encryption method. The original speech is mixed with dual key signals which consist of random key signals (one-time pad) generated by secret seed and chaotic signals generated from chaotic system. In the decryption process, approximate calculation is used to recover the original speech signals. The proposed algorithm for speech signals encryption can resist traditional attacks against the encryption system, and owing to approximate calculation, decryption becomes faster and more accurate. It is demonstrated that the proposed method has high level of security and can recover the original signals quickly and efficiently yet maintaining excellent audio quality.

show abstract

Section: Proposed Methodsmentioning

confidence: 99%

Dual Key Speech Encryption Algorithm Based Underdetermined BSS

Zhao

Zuo

et al. 2014

The Scientific World Journal

View full text Add to dashboard Cite

show abstract

“…The paper analyzed the correlation of speech signals with key signals, and then utilized the correlation calculation to achieve speech decryption. The experiment results showed that correlation calculation decryption nicely simplifies BSS-bsed speech encryption system, largely speeds up the speech decryption, and slightly improves the quality of decrypted speech signals (Guo & Lin, 2010). While Mermoul and Belouchhrani claimed that the interactability of the under-determined BSS problem has been used for the proposal of BSS-based speech encryption has some weakness from cryptographic point of view.…”

Section: Introductionmentioning

confidence: 99%