Cryptanalysis on an organization-friendly blockchain system  

密码分析组织友好的区块链系统

作　　者：Zhang Ying Jiang Rui 张颖;蒋睿(东南大学网络空间安全学院,南京210096)

机构地区：[1]School of Cyber Science and Engineering,Southeast University,Nanjing 210096,China

出　　处：《Journal of Southeast University(English Edition)》2022年第1期36-41,共6页东南大学学报（英文版）

基　　金：The National Natural Science Foundation of China(No.61372103);the Natural Science Foundation of Jiangsu Province(No.BK20201265);the Key Laboratory of Computer Network Technology of Jiangsu Province。

摘　　要：To verify that an organization-friendly blockchain system may suffer from forgery and collusion attacks,forgery and collusion attacks were theoretically carried out according to the phase sequence of an organization-friendly blockchain system.Then,the organization-friendly blockchain system was improved and based on the phase sequence forgery and collusion attacks were conducted.The results show that the attacker can obtain illegal transaction data from forgery and collusion attacks on the organization-friendly blockchain system.However,for the improved organization-friendly blockchain,the attacker s forgery and collusion attacks cannot be completed.Therefore,the organization-friendly blockchain system may be subject to forgery and collusion attacks,but the improved organization-friendly blockchain system can prevent such attacks.为验证组织友好的区块链系统可能遭受伪冒攻击和共谋攻击,按照组织友好的区块链系统的阶段顺序,理论上进行伪冒攻击和共谋攻击.然后,改善组织友好的区块链系统,并根据其阶段顺序,进行伪冒攻击和共谋攻击.结果表明:攻击者可以通过对组织友好的区块链系统进行伪冒攻击和共谋攻击,获得非法交易量;攻击者则无法对改善后的组织友好区块链系统进行伪冒攻击和共谋攻击.由此说明,组织友好的区块链系统可能遭受伪冒攻击和共谋攻击,改善后的区块链系统则可以防止伪冒攻击和共谋攻击.

关 键 词：blockchain identity privacy transaction supervision forgery attack collusion attack 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]