Ripple Unveils XRPL Quantum-Resistant Roadmap, Targets 2028 Transition

Ripple has outlined a plan to overhaul the security architecture of the XRP Ledger, or XRPL, as it prepares for threats posed by quantum computing. The company’s long-term goal is to bolster network stability by adopting quantum-resistant cryptography.

CoinDesk reported on April 21 that Ripple had released a four-phase roadmap to shift the XRP Ledger to a quantum-resistant structure by 2028. The effort is aimed at preparing for a so-called Q-Day, when quantum computers could render current cryptographic systems obsolete.

Ripple identified several major risks that quantum computing could pose to blockchain networks, including the possibility of tracing private keys from exposed public keys, vulnerabilities in long-dormant accounts and broader structural risks across the network. It also flagged information revealed during transaction signing as a potential target for future attacks.

In the first phase, Ripple plans to establish an emergency response framework. That includes a mechanism to migrate existing accounts to quantum-resistant accounts if the threat emerges sooner than expected. The company is also reviewing an asset-recovery mechanism using zero-knowledge proofs, or ZKPs.

The second phase is scheduled for completion in the first half of 2026. Ripple will analyze vulnerabilities across XRPL and assess whether quantum-resistant cryptography proposed by the National Institute of Standards and Technology, or NIST, can be applied. It will also examine the performance impact of technical constraints such as larger key sizes.

In the third phase, Ripple plans to test quantum-resistant signature systems on a test network alongside the existing system. The aim is to validate the framework in a developer environment while preserving the current user experience and supporting a gradual transition.

In the final phase, Ripple plans to revise the network protocol to adopt quantum-resistant signatures as the default architecture. CoinDesk reported that the company is also considering expanded tokenization and privacy features as part of the effort.

The move is seen as notable in the industry because major blockchain projects are beginning to put defensive strategies in place even though quantum computing remains in its early stages.