Research of digital signature based on subliminal channels
Fei Qiu · Journal of Zhejiang University of Technology · 2003
Subliminal channel is a channel which is built in the public channel in order to realize secret communication. The subliminal information is hidden by the type of digital signature in the subliminal channel . It is important to study new digital signature in the subliminal channel . The basic knowledge of subliminal channel is introduced first. Secondly, two digital signature schemes with broadband subliminal channel and narrow subliminal channel are discussed in detail in the following aspects: system initialization?signature formation?signature verification and subliminal information recovery. And the security performance of these digital signature schemes is analyzed in theory. Lastly, theoretical study indicates that the security performance of both two new signature schemes proposed in this article are based on the difficulty of computing discrete logarithm, and therefore the two new signature schemes are provided with preferable security and theoretical significance.