Covert Communication Based on Subliminal Channel in Ordinal Digital Multi-signature
Sheng-He Sun · Dianzi xuebao · 2007
The subliminal channel is a covert communication channel constructed in public correspondence pattern.As a kind of the modern information hiding technology,it is used to transmit the secret information.The subliminal channel in general Elgamal signature is analyzed.And the wideband and narrowband subliminal channel in the ordinal digital multi-signature is discussed.A scheme of narrowband subliminal channel in the ordinal digital multi-signature is given and the bit rate of the sent message is con- fumed by a real-time test so that the capacity and real-time request of the narrowband subliminal channel can be satisfied.