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Modern Physics Letters B

A quantum proxy group signature scheme based on an entangled five-qubit state

Meiling Wang, Wenping Ma, Lili Wang, Xunru Yin

Published Oct 1, 2015• 8 citations
Publisher

Abstract

A quantum proxy group signature (QPGS) scheme based on controlled teleportation is presented, by using the entangled five-qubit quantum state functions as quantum channel. The scheme uses the physical characteristics of quantum mechanics to implement delegation, signature and verification. The security of the scheme is guaranteed by the entanglement correlations of the entangled five-qubit state, the secret keys based on the quantum key distribution (QKD) and the one-time pad algorithm, all of which have been proven to be unconditionally secure and the signature anonymity.

DOI
10.1142/s0217984915501730

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A quantum proxy group signature (QPGS) scheme based on controlled teleportation is presented, by using the entangled five-qubit quantum state functions as quantum channel. The scheme uses the physical characteristics of quantum mechanics to implement delegation, signature and verification. The security of the scheme is guaranteed by the entanglement correlations of the entangled five-qubit state, the secret keys based on the quantum key distribution (QKD) and the one-time pad algorithm, all of which have been proven to be unconditionally secure and the signature anonymity.
A quantum proxy multi-signature scheme is presented based on controlled teleportation.We choose four-particle-cluster state as the quantum channel,use the physical characteristics of controlled quantum teleportation to implement delegation,signature and verification,and adopt quantum key distribution and one-time pad in our scheme.Different from the classical proxy multi-signature schemes based on computing complexity,its security is not influenced by the computational resource of attackers,that is,it has unconditional security.
We present a scheme for teleporting an unknown, two-particle entangled state with a message from a sender (Alice) to a receiver (Bob) via a six-particle entangled channel. We also present another scheme for teleporting an unknown one-particle entangled state with a message transmitted in a two-way form between the same sender and receiver via a five-qubit cluster state. One-way hash functions, Bell-state measurements, and unitary operations are adopted in these two schemes. Our schemes use the physical characteristics of quantum mechanics to implement delegation, signature, and verification processes. Moreover, a quantum key distribution protocol and a one-time pad are adopted in these schemes.
Abstract With the upgrading of communication technology and the rapid development of quantum computing, the classical digital signature schemes are faced with unprecedented challenges, so the research on quantum digital signature is imperative. In this paper, we propose a multi-proxy signature scheme based on controlled quantum teleportation of five-qubit entangled state. In this scheme, quantum fourier transform is used as an encryption method to encrypt message, which improves the quantum efficiency compared with the quantum one-time pad. The five-qubit maximally entangled state which is qubit threshold quantum error correction required is used as the quantum channel to ensure the stability of the scheme. Security analysis shows that our scheme is unforgeable and undeniable, and it can resist the intercept-resend attack.
Abstract In this paper, a multi-proxy blind signature scheme based on controlled quantum teleportation is proposed. Entangled four-qubit Cluster state functions as quantum channel, which needs less resource to complete the quantum multi-proxy blind signature. The scheme uses the physical characteristics of quantum mechanics to guarantee its blindness, unforgeability, and undeniability. The eavesdropping check is used to ensure the security. Our scheme has a foreseeable application to the E-business, E-governments, and etc.
This paper presented a quantum proxy signature scheme which allowed users to obtain the signature and verify of a quantum bit sequence by using the entanglement characteristic of the EPR state and the way of classical encode.In this new scheme,the original signer could delegate his or her signing rights to proxy signer.Guaranteed the unconditionally security of this scheme by quantum key distribution and one time pad.Results show that this new scheme satisfy non-counterfeit,non-disavowal and traceability.