Ripple Pushes for Quantum-Resistant Encryption System Transition for XRP Ledger by 2028

Ripple is working to transition the encryption system of the XRP Ledger (XRPL) to a quantum-resistant method by 2028. The plan aims to enhance network security while protecting existing accounts and assets. According to Ripple's four-phase quantum-resistant roadmap, a developer network trial is planned for the second half of this year, which will involve the simultaneous use of existing electronic signatures and quantum-resistant signatures, with the goal of a full network transition. The roadmap begins with the establishment of an emergency recovery system to prepare for quantum threats, followed by performance verification of post-quantum cryptography (PQC) algorithms and their application to the mainnet. Through the key rotation feature of the XRP Ledger, users can replace the keys used for transaction signatures while maintaining their existing account addresses and assets. Ripple plans to collaborate with quantum security firm Project Eleven to check for vulnerabilities and develop technology that combines quantum-resistant signatures with existing signatures. Currently, the introduction of the ML-DSA-44 signature method is under consideration for the XRP Ledger, and related technical proposals are in the draft stage. Research results from Google are accelerating the transition to quantum security, although quantum-resistant technology may impact transaction processing speed and storage space. Ripple aims to prepare before quantum threats become a reality.