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International Conference on Advanced Communication Technology

Enhanced quantum multi-signature protocol based on controlled teleportation

Minghui Zhang, Huifang Li, Zhaoqiang Xia

Published Jan 1, 2016• 0 citations
Publisher

Abstract

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.

DOI
10.1109/icact.2016.7423538

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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.
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
Recently, a broadcasting multiple blind signature scheme based on quantum teleportation has been proposed for the first time. It is claimed to have unconditional security and properties of quantum multiple signature and quantum blind signature. In this paper, we analyze the security of the protocol and show that the signatory Ui can learn the signed message m by a single particle measurement and the signed message m can be modified at random by anyone according to the scheme. Furthermore, there are some participant attacks and external attacks existing in the scheme. Finally we present an improved protocol and show that the improved scheme can resist all of the mentioned attacks. Meanwhile, the secret keys can be used again and again, which will make it more efficient and practical.
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.
We investigate the existing arbitrated quantum signature schemes as well as their cryptanalysis, including intercept-resend attack and denial-of-service attack. By exploring the loopholes of these schemes, a malicious signatory may successfully disavow signed messages, or the receiver may actively negate the signature from the signatory without being detected. By modifying the existing schemes, we develop counter-measures to these attacks using Bell states. The newly proposed scheme puts forward the security of arbitrated quantum signature. Furthermore, several valuable topics are also presented for further research of the quantum signature scheme.
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.