CAKE: Sharing Slices of Confidential Data on Blockchain

TL;DR

This paper introduces CAKE, a software tool that enhances data confidentiality on public blockchains, enabling secure collaboration among entities in enterprise settings, demonstrated through a logistics cybersecurity case study.

Contribution

The paper presents CAKE, a novel key encryption-based approach to protect sensitive data on public blockchains in enterprise environments.

Findings

CAKE effectively secures confidential data on public blockchains.

Application in logistics demonstrates practical utility.

Enhances trust in blockchain-based collaborative systems.

Abstract

Cooperative information systems typically involve various entities in a collaborative process within a distributed environment. Blockchain technology offers a mechanism for automating such processes, even when only partial trust exists among participants. The data stored on the blockchain is replicated across all nodes in the network, ensuring accessibility to all participants. While this aspect facilitates traceability, integrity, and persistence, it poses challenges for adopting public blockchains in enterprise settings due to confidentiality issues. In this paper, we present a software tool named Control Access via Key Encryption (CAKE), designed to ensure data confidentiality in scenarios involving public blockchains. After outlining its core components and functionalities, we showcase the application of CAKE in the context of a real-world cyber-security project within the logistics domain.