Online/offline heterogeneous signcryption scheme with multi-ciphertext equality test in Internet of vehicles

Zhou Meixian; Fan Xinyue

doi:10.11959/j.issn.1000-0801.2026032

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Online/offline heterogeneous signcryption scheme with multi-ciphertext equality test in Internet of vehicles

Research and Development | 更新时间：2026-03-05

- Online/offline heterogeneous signcryption scheme with multi-ciphertext equality test in Internet of vehicles
- Telecommunications Science Vol. 42, Issue 2, Pages: 106-119(2026)
- 作者机构：
  
  重庆邮电大学通信与信息工程学院，重庆 400065
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(62271096)
- DOI：10.11959/j.issn.1000-0801.2026032
  CLC： TP393;TN918
- Received：21 August 2025，
  
  Revised：2025-09-15，
  
  Accepted：30 September 2025，
  
  Published：20 February 2026
- 稿件说明：
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周美贤,范馨月.车联网中具有多密文等值测试的在线/离线异构签密方案[J].电信科学,2026,42(02):106-119.

Zhou Meixian,Fan Xinyue.Online/offline heterogeneous signcryption scheme with multi-ciphertext equality test in Internet of vehicles[J].Telecommunications Science,2026,42(02):106-119.
周美贤,范馨月.车联网中具有多密文等值测试的在线/离线异构签密方案[J].电信科学,2026,42(02):106-119. DOI： 10.11959/j.issn.1000-0801.2026032.

Zhou Meixian,Fan Xinyue.Online/offline heterogeneous signcryption scheme with multi-ciphertext equality test in Internet of vehicles[J].Telecommunications Science,2026,42(02):106-119. DOI： 10.11959/j.issn.1000-0801.2026032.

摘要

针对车联网（Internet of vehicles，IoV）中异构加密体制通信问题，提出了一种支持多密文等值测试的在线/离线异构签密方案，实现了无证书密码体制到公钥基础设施的安全通信。所提方案基于椭圆曲线加密（elliptic curve cryptosystem，ECC）构建，利用在线/离线签密机制降低车辆端的计算开销。在云端进行多密文等值测试使接收者只须从云端下载一次重复密文，减轻接收者负担。安全性方面，在随机预言机模型（random oracle model，ROM）下证明不可伪造性和机密性。再采用ProVerif和Scyther工具验证，ProVerif结果表明该方案能够保证消息机密性、身份匿名性与签名正确性，Scyther结果显示未发现有效的攻击路径。性能分析表明，与现有方案相比，该方案在计算与通信开销上更具优势，在密文数量较大时优势更明显，适用于车联网环境。

Abstract

To address the heterogeneous cryptographic communication problem in the Internet of vehicles (IoV)

an online/offline heterogeneous signcryption scheme supporting multiple ciphertext equality tests was proposed to achieve secure communication from a certificateless cryptosystem to a public key infrastructure. The scheme was constructed based on elliptic curve cryptosystem (ECC)

and the online/offline signcryption mechanism was employed to reduce the computational overhead on vehicles. A multiple ciphertext equality test was performed in the cloud so that the receiver only needed to download the duplicate ciphertext once

thereby reducing the receiver’s burden. In terms of security

the scheme was proven under the random oracle model (ROM) to satisfy non-repudiation and confidentiality security. Furthermore

the scheme was formally verified using ProVerif and Scyther tools. The ProVerif results show that message confidentiality

identity anonymity

and signature correctness are guaranteed

while the Scyther results show that no effective attack paths are found. Performance analysis demonstrates that the scheme achieves lower computational and communication overhead compared with the existing schemes

and the advantages become more significant with an increasing number of ciphertexts

making it suitable for IoV environments.

关键词

Keywords

references

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