Ripple Unveils Plan to Quantum-Proof XRP Ledger

Ripple has announced a four-phase plan to make its XRP Ledger quantum-resistant by 2028. The move comes as a response to growing concerns about the threat posed by quantum computing to blockchain cryptography.

The plan, outlined in a blog post by RippleX senior engineering director Ayo Akinyele, involves establishing a 'Quantum-Day' contingency to block classical signatures and route holders to quantum-safe accounts if cryptography breaks unexpectedly.

The first phase will be followed by testing of algorithms recommended by the National Institute of Standards and Technology across 2026. Ripple is partnering with research firm Project Eleven on validator benchmarks and a custody wallet prototype.

Akinyele highlighted the 'harvest now, decrypt later' risk, where attackers collect public-key data now and wait for quantum hardware to catch up, posing a concern for long-term holders.