I look for one-pass deniable authentication protocol with a short message payload for my project and find a solution:
*Wei-Bin Lee, Chia Chun Wu, and Woei-Jiunn Tsaur. "A novel deniable authentication protocol using generalized ElGamal signature scheme." Inf. Sci.-177(6):1376-1381 (2007)*
Unfortunately later I found a forum archive where member claimed to have discovered an attack on this protocol:
But in another modern works authors mention this protocol as a reliable: eprint.iacr.org/2013/783
I am not a specialist in mathematics and I can not assess the credibility of proofs.
I put the found materials for download:
nida.pdf for protocol description)
This protocol is still secure? Will it work correctly on the EC25519?