A Post Quantum Key Policy Attribute Based Encryption Scheme from Code Based Cryptographic Assumptions

A Post Quantum Key Policy Attribute Based Encryption Scheme from Code Based Cryptographic Assumptions

연구 분야: Cryptography

학회: International Conference on Advanced Network Technologies and Intelligent Computing

The security underpinnings of conventional cryptographic schemes are compromised by quantum computing which prompted advancements in public key cryptography for postquantum primitives and protocols that are immune to quantum attacks. Most existing research on post quantum Attribute Based Encryption techniques is predicated on lattice based cryptographic assumptions. Despite being thought to provide a robust defense against quantum attacks, code based cryptography has yet to be sufficiently explored in the context of ABE. This paper presents a robust Attribute Based Encryption scheme designed to ensure post quantum security using code based cryptographic assumptions. We integrate ABE into the McEliece cryptosystem and propose a post quantum key policy ABE framework that combines the security advantages of code based cryptosystems with the fine grained access control of ABE. The proposed technique enables effortless integration of attributes into the public key without inflating the key size.