Evaluation Method for Cross-Chain Security Strength Access

doi:10.3969/j.issn.1671-1122.2023.01.010

Abstract

Abstract:

In view of the current security issues of various blockchain cross-chain systems, this paper proposed a set of cross-chain blockchain security strength evaluation methods, and divided security issues into four types: cross-chain trust issues, cross-chain consensus issues, cross-chain security issues, and cross-chain network issues. At the same time, according to their evaluation characteristics, the combination of the analytic hierarchy process and the fuzzy comprehensive evaluation method was used to construct an evaluation matrix to refine the weight coefficients, conducted quantitative and qualitative evaluations of the system and calculated the membership degree, and analyzed the system security according to the result. It is meaningful for cross-chain platforms or systems to evaluate their own security and make advancement. Through the security strength evaluation on the cross-chain system, the result is that the system is better than normal, with a score of 78.27, and still have some improvement. This method has a certain effect on the security evaluation of cross-chain blockchain system.

Key words: blockchain security, cross-chain evaluation, evaluation method

CLC Number:

TP309

FENG Yiting, MA Zhaofeng, XU Danheng, DUAN Pengfei. Evaluation Method for Cross-Chain Security Strength Access[J]. Netinfo Security, 2023, 23(1): 84-92.

Figures/Tables 11

References 27

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准则层	子准则层	子准则含义
跨链信任问题（B1）	跨链机制可信能力（C1）	跨链方法机制的可信任程度
	跨链身份鉴别能力（C2）	验证跨链双方身份签名能力
	区块连续验证能力（C3）	验证区块链连续性能力
	跨链交易验证能力（C4）	验证跨链交易成功和正确能力
跨链共识问题（B2）	孤块问题抵抗能力（C5）	由区块链共识机制工作量证明产生的问题
跨链共识问题（B2）	长距离攻击抵抗能力（C6）	由区块链共识机制权益证明产生的问题
跨链安全问题（B3）	跨链交易资产保护能力（C7）	进行跨链交易时对资产的保护程度
	跨链合约攻击抵抗能力（C8）	进行跨链交易时对跨链交易合约攻击抵抗力
	隐私保护能力（C9）	进行跨链交易时对用户信息的保护能力
跨链网络问题（B4）	网络结构安全能力（C10）	跨链P2P网络结构的健壮程度
	网络传播健壮能力（C11）	验证跨链网络传播数据完整程度
	恶意攻击抵抗能力（C12）	跨链抵抗恶意网络攻击的能力

标度值	重要程度（因素$i$和$j$对比）
1	相同重要
3	稍微重要
5	比较重要
7	非常重要
9	极端重要
2,4,6,8	介于两者之间

因素	B1	B2	B3	B4
B1	$1$	$5$	$2$	$3$
B2	$\frac{1}{5}$	$1$	$\frac{1}{4}$	$\frac{1}{2}$
B3	$\frac{1}{2}$	$4$	$1$	$3$
B4	$\frac{1}{3}$	$2$	$\frac{1}{3}$	$1$

因素权重值	跨链机制可信任能力	跨链身份鉴别能力	区块连续验证能力	跨链交易验证能力
因素权重值	0.3745	0.1643	0.0977	0.3636
一致性检验	$CI=0.0153$ $RI=0.89$ $CR=0.0172$

因素权重值	孤块问题抵抗能力	长距离攻击抵抗能力
因素权重值	0.667	0.333
一致性检验	$CI=0$ $RI=0$ $CR=0$