Hiding Data in OFDM Symbols of IEEE 802.11 Networks
This paper presents a new steganographic method called WiPad (Wireless Padding). It is based on the insertion of hidden data into the padding of frames at the physical layer of WLANs (Wireless Local Area Networks). A performance analysis based on a Markov model, previously introduced and validated by the authors in 10, is provided for the method in relation to the IEEE 802.11 a/g standards. Its results prove that maximum steganographic bandwidth for WiPad is as high as 1.1 Mbit/s for data frames and 0.44 Mbit/s for acknowledgment (ACK) frames. To the authors’ best knowledge this is the most capacious of all the known steganographic network channels.
WLAN IEEE 802.11 information hiding OFDM
Krzysztof Szczypiorski Wojciech Mazurczyk
Warsaw University of Technology, Institute of Telecommunications ul. Nowowiejska 15/19, 00-665 Warsaw, Poland
国际会议
南京
英文
835-840
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）