.png){kind=icon}
返回
Anonymous, Secure, Traceable, and Efficient Decentralized Digital Forensics
.png){kind=icon}
PRE
AI
DOI：10.1109/TKDE.2023.3321712.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Digital forensics is crucial to fight crimes around the world. Decentralized Digital Forensics (DDF) promotes it to another level by channeling the power of blockchain into digital investigations. In this work, we focus on the privacy and security of DDF. Our motivations arise from (1) how to track an anonymous-and-malicious data user who leaks only a part of the previously requested data, (2) how to achieve access control while protecting data from untrusted data centers, and (3) how to enable efficient and secure search on the blockchain. To address these issues, we propose Themis: an anonymous and secure DDF scheme with traceable anonymity, private access control, and efficient search. Our framework is boosted by establishing a Trusted Execution Environment in each authority (blockchain node) for securing the uploading, requesting, and searching. To instantiate the framework, we design a secure and robust watermarking scheme in conjunction with decentralized anonymous authentication, a private and fine-grained access control scheme, and an efficient and secure search scheme based on a dynamically updated data structure. We formally define and prove the privacy and security of Themis. We build a prototype with Ethereum and Intel SGX2 to evaluate its performance, which supports processing data from a considerable number of data providers and investigators.
Keyword:
Access control
decentralized digital forensics
efficiency
privacy
SGX2
security
watermark
blockchain
期刊
IF:
10.4
论文数:
6.8K
被引数:
3.2W
机构
引用论文
.png){kind=icon}
Block4Forensic: An Integrated Lightweight Blockchain Framework for Forensics Applications of Connected VehiclesBlock4Forensic: 用于联网车辆取证应用的集成轻量级区块链框架
OAAI
OAAI分享收藏Ultrafast Study of the Photodissociation of Bromoiodomethane in Acetonitrile upon 266 nm Excitation
PREAI
分享收藏
分享收藏Toward Vehicular Digital Forensics From Decentralized Trust: An Accountable, Privacy-Preserving, and Secure Realization从分散信任走向车辆数字取证: 一种负责任、隐私保护和安全的实现
PREAI
分享收藏
查看更多内容