Abstract: The rise of e-commerce has made online auctions increasingly popular, but existing systems often lack robust security measures. Vulnerabilities like data breaches, unauthorized bidding, and manipulation are prevalent in traditional platforms. This paper introduces a cryptographically enhanced online auction system that ensures bid confidentiality, user authentication, and overall fairness. By integrating AES encryption, SHA-256 hashing, and role-based access control, the system guarantees the integrity of auction operations. A detailed security analysis compares our model with existing solutions, showcasing its effectiveness in addressing the security concerns of digital auction environments.
Keywords: Secure Auction, Cryptography, Data Integrity, Bid Confidentiality, Online Bidding System.
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DOI:
10.17148/IJARCCE.2025.14434
