信息工程大学学报2024，Vol.25Issue(2)：196-204,9.DOI:10.3969/j.issn.1671-0673.2024.02.011
基于时代可撤销的变色龙哈希
Epoch-Based Revocable Chameleon Hash
摘要
Abstract
Chameleon hash,also called one-way hash with trapdoor,has now become the primary technology for implementing redactable blockchain.To solve the problem of trapdoor abuse of chame-leon hash in redactable blockchain,the epoch-based revocable chameleon hash is proposed,where one epoch refers to a specific time period.This function makes the trapdoor time-sensitive and inva-lid as time changes,so as to realize the purpose of revoking the trapdoor.Also,its security model is defined and specific scheme instants are given.The instants are proven to be secure under standard difficult assumptions.Theoretical analysis and experiments show that compared with the same type of scheme,the proposed one has advantages in security with a small extra cost,showing its practicality.关键词
可编辑区块链/变色龙哈希/陷门撤销Key words
redactable blockchain/chameleon hash/trapdoor revocation分类
信息技术与安全科学引用本文复制引用
郝增航,陈越,魏江宏,张万里..基于时代可撤销的变色龙哈希[J].信息工程大学学报,2024,25(2):196-204,9.基金项目
国家自然科学基金资助项目(62172433,62172434) （62172433,62172434）
