You are safe when you tell the truth: a blockchain-based privacy-preserving evidence collection and distribution system for digital forensics
by Junjie Xiong; Biyi Lin
International Journal of Information and Computer Security (IJICS), Vol. 19, No. 1/2, 2022

Abstract: With the development of information technology, digital evidence has played a crucial role in court trial. However, digital evidence incurs serious security threats and privacy issues in the process of collection, storage and distribution, and the real scenarios also raise the requirements of openness and transparency in evidence-related operation. To satisfy the above requirements, some existing research works provide transparency, immutability, and public auditability of evidence-related operations. However, they do not give a specific cryptographic schemes, or do not cover the whole evidence management process, or suffer from heavy computational overhead. To address the above issues, in this paper we proposed a blockchain-based and privacy-preserving evidence collection and distribution system that covers the whole evidence management process for digital forensics. This scheme uses certificateless signature and attribute-based encryption schemes to attain the security and privacy-preserving evidence collection and distribution, and provides flexible keyword search and access policy update over the ciphertext. We rigorously conducted security proof and the security analysis. The comparison and experimental results show that the proposed system is practical and efficient in the blockchain-based digital forensics scenario, and is superior to relevant works in performance.

Online publication date: Fri, 04-Nov-2022

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Information and Computer Security (IJICS):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com