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Journal of Applied Physics

A new quantum group blind signature scheme based on GHZ states

Z. Hu, Yumin Dong

Published May 28, 2024• 4 citations

Abstract

With the development of quantum computers, traditional communication security based on classical computers can no longer guarantee unconditional security. At the same time, a series of encrypted communication solutions that rely on quantum mechanical properties have been spawned. This article focuses on the field of quantum signatures, based on the entangled Greenberger–Horne–Zeilinger state, combining group signatures (any member of the group can sign on behalf of the group) and blind signatures (the signer cannot know the accuracy of the signature content) proposed a new quantum group blind signature scheme that utilizes quantum key distribution to achieve unconditional security. By splitting the original message, the scheme strengthens the relevance of the signature participants and makes the signature to have stronger binding. Then, the security of the scheme against internal and external attacks is analyzed. In this scheme, a pleasing efficiency has been achieved, and the non-repudiation of signatures has been enhanced. At the same time, disputed signatures can be traced back to the signer.

DOI: 10.1063/5.0190064

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Digital signatures are widely used in electronic communications, for example in electronic commerce and e-mail. But classical digital signature scheme only offer security relying on computational assumptions. In contrast, quantum digital signatures provide security based on fundamental principles of quantum physics. Quantum group signatures provide anonymity for signatory, quantum blind signatures provide confidentiality for signed messages. In this paper we demonstrate a quantum group blind signature scheme which have the properties both of group signatures and blind signatures. Besides, the security of our scheme is guaranteed by the quantum mechanics, so without any computational assumption. the group property and blind property of our scheme profits from the properties of the measurement-based quantum computation (MBQC). Our quantum group blind signature scheme can be widely used in e-voting system, e-cash, e-commerce, etc.

Group signature scheme is a method of allowing a member of a group to sign a message anonymously on behalf of the group. The group administrator is in charge of adding group members and has the ability to reveal the original signer in the event of disputes. Based on controlled quantum teleportation with three-particle entangled W states, we propose a new quantum group signature scheme with designated receiver. Security analysis proves that the proposed scheme possesses the characteristics of group signature and resists the usual attacks. Compared with previous proposed schemes, this scheme follows security definition of group signature fully and meets its basic requirements.

This paper proposed a quantum group signature based on printer management model.Using quantum entanglement,the member of printer group Alice may sign the message on behalf of her group,and the printer manager Bob can confirm that the signature from the group,however he can not sure which member did it.If there is dispute,the group manager Trent will trace the illegal printing.Compared with existing classical signature schemes and quantum signature schemes,the quantum group signature has not only the group property,but also the unconditional security,which can be widely used in electronic voting and e-commerce.

Quantum signature combines quantum theory with classical digital signature. The main goal of this field is to take advantage of quantum effects to provide unconditionally secure signature. We present a quantum signature scheme with message recovery without using entangle effect. The most important property of the present scheme is that it is not necessary for the scheme to use Greenberger-Horne-Zeilinger states. The security of the scheme relies on the quantum one-time pad and quantum key distribution. The efficiency analysis shows that the proposed scheme is an efficient scheme