Robust digital signature scheme with subliminal channels
Jan and Tseng, in 1999, proposed two efficient digital signature schemes with subliminal channels. However, we show that a malicious subliminal receiver can forge subliminal messages that will be accepted by other subliminal receivers in Jan and Tseng's two schemes. Moreover, we also present a modification of Jan and Tseng's schemes to repair the security flaw.
digital signature subliminal channel security cryptography