Recently, Jiang et al. proposed a novel quantum multi-signature protocol based on locally
indistinguishable orthogonal product states. Unfortunately, their protocol cannot resist …

In this paper, a new quantum encryption based on the key-controlled chained CNOT
operations, which is named KCCC encryption, is proposed. With the KCCC encryption, an …

In this paper, a quantum signature scheme with semi-trusted arbitrator is proposed. In our
scheme, the signatory encodes the classical message into non-orthogonal quantum …

Recently, multiparty entanglement is becoming an important physical resource to design
some typical quantum cryptography protocols. In this paper, we firstly proposed two special …

We analyze the security of Jiang et al.'s arbitrated quantum signature scheme based on
local indistinguishability of orthogonal product states. First, Jiang et al.'s scheme cannot …

The blind signature is widely used in cryptography applications because it can prevent the
signer from gaining the original message. Owing to the unconditional security, the quantum …

We present a quantum signature scheme using a single qubit rotation operator. In this
protocol, the trusted center confirms the quantum signature and thus conforms with other …

Based on the asymmetric quantum cryptosystem, a new public-key quantum signature
scheme is proposed. In our scheme, the signer's public key is derived from her public …

With the development of quantum signature, two improved arbitrated quantum signature
(AQS) protocols have been presented with different quantum encryptions. In this paper …

Quantum signature is a branch of quantum cryptography that draws on the design ideas of
classic digital signatures, and uses the basic principles of quantum mechanics to achieve …