Open AccessLost audio packets steganography: the first practical evaluation
Author(s) -
Mazurczyk Wojciech
Publication year - 2012
Publication title -
security and communication networks
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.446
H-Index - 43
eISSN - 1939-0122
pISSN - 1939-0114
DOI - 10.1002/sec.502
Subject(s) - computer science , steganography , network packet , voice over ip , computer network , codec , telephony , protocol (science) , internet protocol , bandwidth (computing) , the internet , quality of service , telecommunications , multimedia , embedding , world wide web , artificial intelligence , medicine , alternative medicine , pathology
This paper presents first experimental results for an Internet Protocol (IP) telephony‐based steganographic method called lost audio packets steganography (LACK). This method utilises the fact that in typical multimedia communication protocols such as Real‐time Transport Protocol, excessively delayed packets are not used for the reconstruction of transmitted data at the receiver; that is, these packets are considered useless and discarded. The results presented in this paper were obtained on the basis of a functional LACK prototype and show the method's impact on the quality of voice transmission. Achievable steganographic bandwidth for the different IP telephony codecs is also calculated. Copyright © 2012 John Wiley & Sons, Ltd.