Semiquantum secret sharing using entangled states

Secret sharing is a procedure for sharing a secret among a number of\nparticipants such that only the qualified subsets of participants have the\nability to reconstruct the secret. Even in the presence of eavesdropping,\nsecret sharing can be achieved when all the members are quantum. So what\nhappens if not all the members are quantum? In this paper we propose two\nsemi-quantum secret sharing protocols using maximally entangled GHZ-type states\nin which quantum Alice shares a secret with two classical parties, Bob and\nCharlie, in a way that both parties are sufficient to obtain the secret, but\none of them cannot. The presented protocols are also showed to be secure\nagainst eavesdropping.\n