XRP Ledger Targets Quantum Readiness by 2028

The push to make the XRP Ledger future-proof against the growing quantum threat is gaining momentum.

Ayo Akinyele, Head of Engineering at RippleX, recently shared a detailed roadmap to make XRP quantum-ready by 2028. He described the shift as a major architectural change rather than a simple upgrade.

Key Points

• XRP Ledger targets quantum readiness by 2028 as RippleX outlines a phased upgrade roadmap.
• RippleX warns quantum computing could threaten blockchain security, pushing early preparation.
• XRPL’s built-in key rotation and seed-based keys may ease transition to post-quantum cryptography.
• Four-phase plan spans testing, integration, and full rollout while preserving network performance.

Quantum Threat Moves from Theory to Planning

Recent research from Google Quantum AI has increased urgency around quantum computing risks. While current systems remain secure, concerns persist that future quantum machines could break the cryptography used to secure blockchain networks.

One key issue is the “harvest now, decrypt later” scenario, in which attackers collect encrypted data today and wait for quantum technology to mature before decrypting it. For long-term holders, this makes early preparation critical.

XRP Ledger’s Built-In Advantage

The XRP Ledger already has features that could ease the transition. Native key rotation allows users to update their cryptographic keys without changing accounts. At the same time, seed-based key generation enables the secure creation of new keys over time.

These features provide a smoother migration path compared to networks like Ethereum, where similar upgrades may require more complex user actions.

Four-Phase Roadmap to Quantum Readiness

The roadmap outlined by RippleX’s engineering lead details a step-by-step approach:

Phase 1: Emergency Recovery

This phase prepares for a worst-case scenario in which current cryptography suddenly fails. A fallback system would allow users to safely move funds into quantum-secure accounts using advanced methods such as zero-knowledge proofs.

Phase 2: Research and Testing (Early 2026)

In this phase, the RippleX team will assess quantum risks across the network and study their impact on performance, storage, and bandwidth, as larger keys and signatures could create scaling challenges.

At the same time, developers will explore how post-quantum cryptography can integrate into XRPL through early prototypes, including ML-DSA testing on AlphaNet by contributors like Denis Angell.

Phase 3: Controlled Integration (Late 2026)

Quantum-resistant signatures will run alongside current systems on Devnet, allowing developers to test performance, usability, and network impact at scale without disrupting the live network.

This phase also expands beyond signatures to other cryptographic tools, such as post-quantum–friendly methods for zero-knowledge proofs and homomorphic encryption. These could enhance privacy and compliance features on XRPL for tokenization and confidential transfers for MPTs.

Phase 4: Full Quantum Transition (Target 2028)

The final phase involves rolling out native post-quantum cryptography across XRPL through a formal network upgrade.

A protocol amendment will introduce native PQC signatures, followed by a gradual network-wide rollout.

The focus will be on preserving XRPL’s stability, maintaining performance, throughput, and low overhead, while ensuring validators remain reliable and settlement stays fast and deterministic.

It will require close coordination with ecosystem partners to ensure a smooth migration for all accounts, with full rollout targeted for 2028.

Ecosystem-Wide Effort

XRPL developers are making this transition in collaboration with cryptography experts and external partners like Project Eleven. Internal contributors, including engineers and researchers, are already testing early implementations.

XRPL validator Vet described the process as an “XRP quantum journey,” noting that the upgrade will happen in stages rather than through a single change. The approach also prioritizes maintaining XRPL’s existing strengths while preparing for unexpected developments.

👀Banger post on XRP Quantum readiness by 2028!

We have a roadmap for when and how we want to become Quantum ready on XRP.

This is a multi step approach and not a one point change. Call it the XRP quantum journey!

What’s the roadmap look like?

2 things are important before… https://t.co/qqdfohu4HF pic.twitter.com/uRzI21ROmG

— Vet (@Vet_X0) April 20, 2026

In sum, the key takeaway is that quantum risk is no longer a distant concern. With global standards already being developed and research advancing, blockchain networks are beginning to prepare for long-term security challenges.