POST-QUANTUM HYBRID ENCRYPTION SCHEME FOR BLOCKCHAIN APPLICATION

【Author】 Hendy, Kevin; Wicaksana, Arya

【Source】INTERNATIONAL JOURNAL OF INNOVATIVE COMPUTING INFORMATION AND CONTROL

【影响因子】0.000

【Abstract】The blockchain has gained more adoption and attention due to its secure, transparent, and decentralized characteristics. The discovery of quantum computers and algorithms exposed a threat to the established security standard, including the blockchain. This study aims to implement Kyber, a cryptographic primitive included in Cryptograph-ic Suite for Algebraic Lattices (CRYSTALS), along with AES-256 symmetric encryption algorithm in a hybrid encryption scheme for a blockchain application. The test and eval-uation results using Hyperledger Caliper show that the key size 768 on CRYSTALS-Kyber provides the best performance due to stable encryption and decryption time compared to key sizes 512 and 1024. The peak throughput is 12.16 transactions per second for two nodes and 20.48 for four, and the latency is 3.396s for two workers and 3.544s for four. This approach adds Kyber as an extra module against quantum attacks. This addition reduces the throughput of Oricon by 57.03% for two workers and 52.15% for four. This study finds that post-quantum cryptography could be added to existing blockchain appli-cations with minimum to no modifications to the blockchain applications and shows the performance trade-off with adding a post-quantum security module.

【Keywords】Blockchain; CRYSTALS-Kyber; Hybrid encryption; Post-quantum

【发表时间】2022 DEC

【收录时间】2022-12-04

【文献类型】实验仿真

【主题类别】

区块链技术-核心技术-加密算法