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PSPAB: Privacy-preserving average procurement bidding system with double-spending checking
Li Li1,2, Jiayong Liu1, Peng Jia1
1College of Cybersecurity, Sichuan University, Chengdu, Sichuan, China.
Plos One
|October 29, 2020
Summary
We introduce PSPAB, a secure system for average procurement bidding that protects supplier bid privacy. This lightweight solution ensures efficient bidding and prevents double spending, validated by experiments.
Area of Science:
- Computer Science
- Cryptography
- Information Security
Background:
- Organizations utilize auctions for cost-effective procurement.
- Existing privacy-preserving auction solutions lack efficiency in average bidding.
- A need exists for robust privacy in procurement bidding systems.
Purpose of the Study:
- To propose PSPAB, a novel system for secure average procurement bidding.
- To ensure full bid privacy for suppliers.
- To enable user identification for preventing double spending.
Main Methods:
- Developed a lightweight, secure average procurement bidding system (PSPAB).
- Employed cryptographic tools for bid privacy.
- Formally proved system security under a semi-honest adversary model.
Main Results:
- PSPAB provides full privacy for supplier bids.
- The system is efficient for average procurement bidding.
- PSPAB allows procurement managers to identify users in cases of double spending.
Conclusions:
- PSPAB offers an efficient and secure solution for procurement bidding.
- The system effectively balances privacy protection with fraud detection.
- Experimental validation confirms PSPAB's practical applicability.
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