A scheme on converting quantum signature with public verifiability into quantum designated verifier signature

Shi, Wei‐Min; Wang, Yanmei; Zhou, Yi‐Hua; Yang, Yu‐Guang; Zhang, Jan-Biao

doi:10.1016/j.ijleo.2018.03.048

Cited by 19 publications

(15 citation statements)

References 29 publications

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“…Shi et al rst proposed two quantum DV signature (QDVS) schemes [26,27], whose security relied on the fundamental properties of quantum mechanics. So, the schemes in [26,27] should be safer than the classical DVS scheme in the face of a powerful quantum adversary.…”

Section: Introductionmentioning

confidence: 99%

Quantum Designated Verifier Signature Scheme with Semi-Trusted Third-Party

Zhang

Xin

et al. 2023

Int J Theor Phys

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Designated veri er signature (DVS) schemes can be applied in many scenes, such as E-voting and Ebidding use DVS attributes to protect the secret of participants. Most traditional DVS schemes are vulnerable to quantum computer attacks. Then, an identity-based semi-trusted third-party quantum DVS (STQDVS) scheme is proposed, which is safe for quantum means of attack. In new STQDVS scheme, the third participant prepares entangled Bell states and allocates them to the signer and the designated veri er (DV). The signer uses the identity information as her public key and the measurement results of corresponding quantum sequences as her private key to generate the signature. The DV applies the identity information as his public key and the measurement results of corresponding quantum sequences as her private key to verify the signature. Non-transferability and hidden origin are guaranteed by the fact that the DV can generate the same signature as the signatory by means of a simulated signature step. Security analysis has shown that attacks such as forgery, inter-resending, and impersonation are ineffective for the proposed scheme and that even third-party cannot forge signatures. On the other hand, the whole process of the scheme does not require any quantum key distribution protocols, quantum oneway functions, and quantum state exchange tests, which makes the STQDVS scheme relatively simple and more e cient than similar schemes.

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Section: Introductionmentioning

confidence: 99%

Quantum Designated Verifier Signature Scheme with Semi-Trusted Third-Party

Zhang

Xin

et al. 2023

Int J Theor Phys

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“…按照构造方式, 量子签名方案可分为基于离散变量的量子签名方案 [14−22] 和基于连续变量相干态的量子签名方案 [23,24] . 为使得SDVS可以抵抗量子敌手, Shi等 [25,26] 提出两类指定验证者量子签名(QSDV). Shi等的 QSDV方案具有传统的SDVS的属性.…”

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“…而安全的量子加密方案应在理论上具备信息安全属性 (information-theoretical security)-量子密文不可区分性 [27−29] . 然而, 文献 [25,26]的量子密文的不可区分性并不能从理论上得到有效证明. 另外, 在文献 [25,26]中, 需要使用量子单向函数, 验证者需要进行量子态比较算法来比较两个量子态是否相同.…”

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“…然而, 文献 [25,26]的量子密文的不可区分性并不能从理论上得到有效证明. 另外, 在文献 [25,26]中, 需要使用量子单向函数, 验证者需要进行量子态比较算法来比较两个量子态是否相同. 需要注意的是, 量子态比较算法的输出具有一定的错误率.…”

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“…因此, 需要进行执行大量的量子态比较测试才能验证两个量子态是否相同. 因此, 这将会影响文献 [25,26]的执行和计算效率. 最近, 利用基于身份的密码系统的优点, Xin等 [30] 提出了一个基于身份的QSDV.…”

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Quantum signature for designated verifier with strong security

Rong¹,

Xin²,

Li³

2020

Acta Phys. Sin.

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Most of the classical designated verifier signature schemes are insecure against quantum adversary. In this paper, a quantum signature scheme for the designated verifier is proposed. In our scheme, during the initialization phase, the partners share secret keys by performing the quantum key distribution protocol. On the other hand, by performing the quantum direct communication protocol, the key generator center shares secret keys with the signer and the designated verifier, respectively. The key generator center generates a particle sequence of Bell state and distributes the particles between the signer and the designated verifier. During the signature generation phase, the signer encrypts the particle sequence by the secret keys and Hardmard operators. After that, the signer performs the controlled unitary operations on the encrypted particle sequence so as to generate the quantum signature. The designated verifier can simulate the quantum signature by performing the same symmetric signing steps as that performed by the original signer. Hence, the quantum signature signed by the true signer is the same as the one simulated by the receiver, which makes our scheme possess the designated properties. During the signature verification phase, the designated verifier performs the controlled unitary operations on the quantum signature and obtains the quantum ciphertexts. After that, the designated verifier decrypts the quantum ciphertexts by the symmetric secret keys and Hardmard operators so that the quantum signature can be verified. Our signature is secure against forgery attack, inter-resending attacks and Trojan horse attack. Because the trace distance between the density operators of different quantum signatures is zero, the information-theoretical security of our quantum signature scheme can be proved. The unconditionally secure quantum key distribution protocol and the one-time pad encryption algorithm can guarantee the security of the secret keys shared by the partners. What is more, the security assumption about the key generation center is weak. That is, it is not necessary to assume that the key generation center should be fully trusted. On the other hand, in our scheme, the quantum one-way function is not used. To generate a quantum signature, the signer need not prepare for entangled particle sequence. To verify a quantum signature, the verifier need not apply any state comparison to the received particles. The qubit efficiency is 100%. Therefore, our scheme has the advantages in the security and efficiency over the other quantum signature schemes for the designated verifier.

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