XMSS-LCT: Extended Merkle Signature Scheme (XMSS) with Left-Confirm Tree (LCT)
Ho Ngoc Hai · 2024
In the post-quantum era, ensuring security for digital signature systems is of utmost importance. XMSS (eXtended Merkle Signature Scheme) has been designed to withstand attacks from quantum computers by utilizing one-time signatures WOTS+ and Merkle trees. This paper introduces an enhancement of XMSS through the integration of the Left-Confirm Tree (LCT), resulting in XMSS-LCT. This improvement not only strengthens security but also optimizes storage and processing performance. We provide a detailed presentation of the structure, operational mechanism, implementation process, and experimental results that demonstrate the feasibility and effectiveness of XMSS-LCT.