Ripple Is Racing to Make XRP Ledger Quantum-Resistant by 2028
Ripple has released a detailed four-phase roadmap aimed at making the XRP Ledger quantum-resistant by 2028, signalling that the crypto industry can no longer afford to treat quantum computing as a distant, theoretical problem.
The move comes in direct response to warnings from Google Quantum AI, which has estimated that quantum security threats could breach cryptographic systems by 2032, and possibly with far fewer resources than previously thought, around 500,000 physical qubits. That tightened window has put pressure on blockchain networks to act now rather than later.
Ripple’s key concern is what engineers call the “harvest now, decrypt later” risk, where bad actors collect visible cryptographic data today and simply wait for quantum hardware to mature enough to crack it. It is a subtle but serious vulnerability, and one that Ripple says warrants a structured, phased response across the entire XRP ecosystem.
The first phase of the plan focuses on emergency preparedness for what Ripple calls “Q-Day.” In that scenario, classical public-key signatures would no longer be accepted by the network, forcing all funds to migrate to quantum-safe accounts. This phase also explores enabling safe fund recovery through zero-knowledge proofs, a method of mathematically proving ownership of a key without actually revealing it.
The second phase moves into proactive experimentation, with Ripple’s team testing algorithms recommended by the National Institute of Standards and Technology (NIST) and building proof-of-concept custody wallets. As part of this phase, Ripple is already collaborating with Project Eleven to accelerate early experimentation, with the organisation building a proof-of-concept hybrid post-quantum signing solution.
In the third phase, Ripple plans to deploy a hybrid cryptographic framework on Devnet, combining post-quantum and elliptic-curve signatures, while also exploring privacy tools such as zero-knowledge proofs and homomorphic encryption for tokenization and Confidential Transfers on the XRP Ledger.
The final phase targets a full production transition by 2028, backed by a new XRPL amendment and broader ecosystem coordination. The goal, Ripple says, is to complete the full migration without compromising the network’s speed or settlement finality, keeping the XRP Ledger quantum-resistant without disrupting existing users.
It is worth noting that XRP currently faces limited quantum exposure compared to other major cryptocurrencies such as Bitcoin, which is at greater risk as quantum computing evolves. The XRP Ledger already holds an advantage due to its native key rotation and seed-based key generation features.
Making the XRP Ledger quantum-resistant by 2028 puts Ripple a year ahead of Google’s own projected 2029 danger timeline, a deliberate move that reflects how seriously the company is now treating the quantum threat.
