Consumers frequently interact with reputation systems to rate products, services, and deliveries. While past research extensively studied different conceptual approaches to realize such systems securely and privacy-preservingly, these concepts are not yet in use in business-to-business environments. In this paper, (1) we thus outline which specific challenges privacy-cautious stakeholders in volatile supply chain networks introduce, (2) give an overview of the diverse landscape of privacy-preserving reputation systems and their properties, and (3) based on well-established concepts from supply chain information systems and cryptography, we further propose an initial concept that accounts for the aforementioned challenges by utilizing fully homomorphic encryption. For future work, we identify the need of evaluating whether novel systems address the supply chain-specific privacy and confidentiality needs.

翻译：消费者频繁使用信誉系统对产品、服务和配送进行评价。尽管以往研究已广泛探讨了实现此类系统安全且保护隐私的不同概念方法，但这些理念尚未在企业对企业环境中得到应用。为此，本文（1）阐述了波动性供应链网络中注重隐私的参与者所带来的特定挑战；（2）概述了隐私保护信誉系统的多样性及其特性；（3）基于供应链信息系统与密码学的成熟理论，进一步提出了一种利用全同态加密应对上述挑战的初始方案。未来工作需评估新型系统是否满足供应链特有的隐私与保密需求。