In this paper, we present a quantum multi-signature scheme based on Bell state. It allows n ( \(n>1\) ) signers sign a same file in random order. Bell states are used as information carriers and transmitted among verifier, requester, and signers. In this way, the verifier can verify the correctness of the signature. It is shown that our scheme satisfies the unforgeability and nondeniability of a secure quantum signature in theory and can resist collusive attack. In addition, only the Hadamard operator and four Pauli operators are used to generate a signature, which makes our scheme more feasible.
