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Wuhan University Journal of Natural Sciences

Digital multi-signature based on the controlled quantum teleportation

Xiaojin Wen, Yun Liu, Pengyun Zhang

Published Jan 1, 2007• 13 citations
Publisher

Abstract

In this paper, a scheme which can be used in multi-user quantum digital signature is proposed. The scheme of signature and verification is based on the characters of GHZ (Greenberger-Horne-Zeilinger) states and controlled quantum teleportation. Different from the digital signatures based on computational complexity, this scheme is unconditional secure, and compared to the former presented quantum signature scheme, it does not rely on an arbitrator to verify the signature and realize a message can be signed by multi-user together.

DOI
10.1007/s11859-006-0161-7

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In this paper, a scheme which can be used in multi-user quantum digital signature is proposed. The scheme of signature and verification is based on the characters of GHZ (Greenberger-Horne-Zeilinger) states and controlled quantum teleportation. Different from the digital signatures based on computational complexity, this scheme is unconditional secure, and compared to the former presented quantum signature scheme, it does not rely on an arbitrator to verify the signature and realize a message can be signed by multi-user together.
In this paper, a protocol which can be used in multi-user quantum signature is proposed. The scheme of signature and verification is based on the correlation of Greenberger-Horne-Zeilinger (GHZ) states and the controlled quantum teleportation. Different from the digital signatures, which are based on computational complexity, the proposed protocol has perfect security in the noiseless quantum channels. Compared to previous quantum signature schemes, this protocol can verify the signature independent of an arbitrator as well as realize multi-user signature together. - PACS numbers: 03.67.Dd; 03.67.-a
An authentic digital signature scheme based on the correlation of Greenberger-Horne-Zeilinger (GHZ) states was presented. In this scheme, by performing a local unitary operation on the third particles of each GHZ triplet, Alice can encode message M and get its signature S. Bob performs CNOT operation on the combined GHZ triplets can recovery the message M and directly authenticates Alice's signature S. Our scheme was designed to use quantum secret key to guaranteed unconditional security, as well as use quantum fingerprinting to avoid trick attacks and reduce communication complexity.
The multi-user quantum signature protocol makes the message can be signed by more than one signatory. In this paper, we put forward an enhanced quantum multi-signature scheme based on Bell states and the controlled quantum teleportation. Compared to the previous multi-signature schemes, our protocol can offer higher security guaranteed by the fundamental laws of physics. While ensuring the nice security of the protocol we also pay attention to keeping its efficiency. Moreover, the scheme is more feasible with the present-day technique.
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.
In order to realize digital signature and vote validly and reliably in multi-user environment, a controllable quantum sequential signature and vote scheme is put forward. The signature of cryptograph and users validation are achieved by using the property of quantum entanglement swapping in Bell states;The choice of target users and the transmission of signature-information between users are implemented by controllable quantum teleportation; The quantum key and one-time pad ensures the safety of our scheme. The verification for each terminal and the center is required in this scheme, so it can position where the error happens accurately; The signature-user is ensured unknown to other users in this scheme, and the same to the comment by the signature-user. It has better performance in confidentiality and practicability compared with previous work.