Digital Signature Combined with Subliminal Channel and its Variants

Saumya Singh, Himanshu Agrawal

A subliminal channel or a covert communication channel, where the message is send to the authorized user. Only an authorized user can access this message. In digital signature implemented in a subliminal channel, subliminal message is embedded in the signature by the signer. Signature can we verified by any receiver but only authorized receiver can access the subliminal message. A discussion will be made on, 1.subliminal channel with two digital signature schemes constructed on discrete logarithms. 2. Threshold subliminal channel where message can be recovered with the help of t users among the authorized user.  3. A subliminal channel with an ID based signature scheme 4.Integrating subliminal channel with access control 5. An applications based on subliminal channel.