Ripple Sets Quantum-Resistant Deadline Amid Quantum Computing Fears

Ripple has announced a four-phase roadmap to make the XRP Ledger quantum-resistant by 2028. This move comes in response to warnings about the threat posed by quantum computing to blockchain cryptography.

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

Phases two and three, scheduled for 2026, will cover testing of algorithms recommended by the National Institute of Standards and Technology. Ripple is partnering with research firm Project Eleven on validator benchmarks and a custody wallet prototype.

The fourth phase proposes a native amendment to the ledger by 2028, aiming to mitigate a 'harvest now, decrypt later' risk where attackers collect public-key data now and wait for quantum hardware to catch up.