Ripple has published a multi-phase roadmap to make the XRP Ledger resistant to quantum computing threats, targeting a full transition to native post-quantum cryptographic signatures by 2028.
The company released its plan, titled "Post-Quantum Readiness on the XRP Ledger," on April 20, 2026. The roadmap outlines how XRPL will gradually adopt new signature schemes designed to withstand attacks from future quantum computers, which could eventually break the elliptic-curve cryptography that most blockchains rely on today.
Ripple sets a 2028 target for a quantum-ready XRP Ledger
Ripple noted that phase 3 of the roadmap begins in the second half of 2026 and will run candidate post-quantum signature schemes alongside existing cryptographic methods on Devnet. Phase 4 aims to propose a formal amendment introducing native post-quantum cryptography to the network.
The roadmap targets full native post-quantum signature readiness on XRPL by 2028.
The distinction between a roadmap and a completed rollout is important. No amendment has been enacted on mainnet, no rippled release includes post-quantum signatures, and no validator migration has taken place. The 2028 date is a forward-looking target, not a present-day network state.
Ripple said it is collaborating with Project Eleven, a cryptography-focused research group, on validator-level testing, Devnet benchmarking, and a post-quantum custody wallet prototype. This work is intended to stress-test candidate algorithms before any mainnet proposal.
On the standards side, XRPL Standards discussion #295 proposes support for Dilithium-based signatures via a new key type and a lsfForceQuantum account flag that would require quantum-resistant signatures on designated accounts.
XRPL already has built-in key-rotation capabilities through its regular key pair system, which lets account holders authorize a separate signing key that can be changed or removed later. This existing infrastructure gives Ripple a migration path that some other networks lack.
Why quantum readiness matters for blockchain networks
Current blockchain cryptography, including the ECDSA and EdDSA algorithms used to sign transactions, could become vulnerable if sufficiently powerful quantum computers are built. A quantum machine capable of running Shor's algorithm at scale could theoretically derive private keys from public keys, putting wallet funds at risk.
No such machine exists today, and estimates for when one might vary widely. But the National Institute of Standards and Technology (NIST) has already finalized post-quantum cryptography standards, signaling that institutions should begin preparing now rather than waiting for an imminent threat.
For networks like XRPL that serve institutional users, early preparation is a trust signal. If a ledger's signature scheme were compromised, every account with an exposed public key could be drained. The cost of upgrading early is engineering effort; the cost of upgrading late could be catastrophic loss of funds.
What Ripple's roadmap could mean for XRP Ledger and the wider crypto market
XRP trades at $1.43 with a market capitalization of roughly $88 billion, making it the fourth-largest cryptocurrency by market cap. The roadmap announcement lands during a cautious market environment, with the Fear & Greed Index reading 29, firmly in "Fear" territory.
Ripple's move positions XRPL as one of the first major Layer 1 networks to publish a concrete, phased timeline for post-quantum readiness. While other projects have explored quantum-safe upgrades, including Sui Research's backward-compatible wallet upgrade for EdDSA chains, few have committed to a specific target year with validator-level testing already underway.
The broader crypto sector has been focused on more immediate concerns. Bitcoin recently surged past $87,000 on record ETF inflows, and research into Bitcoin holding periods and ROI has dominated investor attention. Meanwhile, geopolitical events have driven short-term price swings that overshadow longer-horizon infrastructure work like quantum readiness.
Execution will determine whether this roadmap becomes a competitive advantage or just another whitepaper commitment. The Devnet testing phase starting later this year will be the first concrete milestone, followed by the amendment proposal that would need validator consensus to activate on mainnet.
If Ripple meets its 2028 target, XRPL would gain a verifiable security property that most competing networks cannot yet claim. The next checkpoint comes when phase 3 Devnet results are published in late 2026.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.