TACKLE: Time-based Access Control and Key delegation for Letter of credit Ecosystems

Le résumé fourni par la source

Letters of Credit (L/Cs) are essential for international trade, but traditional systems struggle with security, efficiency, and access control. To address these challenges, we propose TACKLE, a new framework that combines identity-based encryption (IBE) with blockchain technology. TACKLE offers advanced features like time-based access control and hierarchical key delegation, making it ideal for complex international trade workflows. Our framework significantly improves document verification and access management while maintaining strong security. We tested TACKLE’s performance and found it to be efficient, with quick key generation times (68–74 ms) and fast encryption (3.933 to 8.333 s). Network latency was stable at 2–8 ms across different data sizes. Compared to RSA, TACKLE generated keys 34.2% faster while using similar system resources. Our results show that TACKLE effectively balances security with efficiency, making it suitable for typical L/C documents up to 10MB. With its strong security features and performance, TACKLE is a promising solution for modernizing international trade finance. • This article introduces TACKLE, a groundbreaking framework that tackles critical security and efficiency challenges in modern L/C operations. by combining IBE with blockchain technology. • A key innovation of TACKLE is its time-based access control and key delegation mechanisms, which are specifically designed for the complex needs of international trade. This ensures that only authorized parties can access documents within specific timeframes, mitigating the risk of unauthorized access and document manipulation. • Our implementation and evaluation by comparing TACKLE to existing cryptographic solutions has demonstrated that TACKLE framework has consistent performances across various scenarios, specifically for typical L/C document sizes, efficient key generation, encryption, and resource utilization.

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