Design of Distributed SM2 Digital Signature Scheme

SHI De-yue; YIN Hao; ZHAO Zi-pu; HOU Hong-xia

doi:10.3969/j.issn.2096-6091.2024.02.006

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Design of Distributed SM2 Digital Signature Scheme

CORRESPONDENCE | 更新时间：2025-04-02

- Design of Distributed SM2 Digital Signature Scheme
- New Generation of Information Technology Vol. 7, Issue 2, Pages: 30-34(2024)
- 作者机构：
  
  西安邮电大学网络空间安全学院，陕西西安 710121
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.2096-6091.2024.02.006
  CLC： TN918
- Published：25 February 2024
- 稿件说明：
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石德岳, 尹浩, 赵自浦, 等. 分布式SM2数字签名方案设计[J]. 新一代信息技术, 2024, 7(2): 30-34

SHI De-yue, YIN Hao, ZHAO Zi-pu, et al. Design of Distributed SM2 Digital Signature Scheme[J]. New Generation of Information Technology, 2024, 7(2): 30-34
石德岳, 尹浩, 赵自浦, 等. 分布式SM2数字签名方案设计[J]. 新一代信息技术, 2024, 7(2): 30-34 DOI： 10.3969/j.issn.2096-6091.2024.02.006.

SHI De-yue, YIN Hao, ZHAO Zi-pu, et al. Design of Distributed SM2 Digital Signature Scheme[J]. New Generation of Information Technology, 2024, 7(2): 30-34 DOI： 10.3969/j.issn.2096-6091.2024.02.006.

摘要

在数字签名过程中，签名私钥通常存储在用户终端，易受到恶意用户的攻击，造成密钥的泄露进而伪造数字签名。为了降低签名密钥泄露的风险，本文提出一种分布式SM2数字签名方案。该方案需要通信双方分布式存储各自签名私钥，完整签名公、私钥通过双方交互生成，任何一方都没有能力导出完整的签名密钥。与已有方案相比，本方案协同签名效率高，适用于轻量级应用场景。同时在安全性方面，本方案的签名过程需要通信双方协同完成，任何一方都没有恢复完整私钥及输出签名的能力，有效降低了密钥泄露的风险；而在资源开销方面，本方案在密钥协商和协同签名阶段效率优势明显，与原始 SM2 签名相比，处理小数据时性能相近，处理大数据时耗时增加但差距随数据量增大而缩小，资源开销具优势。

Abstract

In the digital signature process

the signature private key is usually stored in the user's terminal

which is easily attacked by malicious users

resulting in the leakage of the key and then forging the digital signature. In order to reduce the risk of signature key leakage

this paper proposes a distributed SM2 digital signature scheme. The scheme requires both parties to store their signature private keys in a distributed manner

and the complete signature public and private keys are generated through interaction between the two parties

and neither party has the ability to derive the whole signature key

compared with existing schemes

this scheme has high efficiency in collaborative signature and is suitable for lightweight application scenarios. At the same time

in terms of security

the signature process of this scheme requires the collaboration of both communication parties

and neither party has the ability to recover the complete private key and output the signature

effectively reducing the risk of key leakage. In terms of resource overhead

this scheme has obvious efficiency advantages in the key negotiation and collaborative signature stages. Compared with the original SM2 signature

it has similar performance when processing small data

and the time-consuming increases when processing large data

but the gap narrows as the data volume increases

and the resource overhead has advantages.

关键词

Keywords

references

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