Abstract: Based on the permutation and Diffie-Hellman problem, a verifiable $ (k,n) $ threshold multi-secret sharing scheme is proposed. In the scheme, the application of the permutation ensures the security of the secret shares generated by calculation. Under the assumption of the Diffie-Hellman problem, participants' pseudo-shares are generated by themselves. The verifiability of the scheme is achieved based on whether the relevant equation holds. Each participant only needs to maintain a pseudo-share that is different from each other to reconstruct multiple secrets according to the threshold value k. Further analysis shows that the scheme does not need a secure channel, the pseudo-share of each participant can be reused, and it can resist collusion and external attacks.
Keywords: multi-secret sharing; threshold recovery; verifiability; permutation; Diffie-Hellman problem