XRP Ledger Targets Post-Quantum Upgrade by 2028

Ripple is preparing the XRP Ledger for the potential threat from quantum computing, although there is no evidence that XRP Ledger keys can currently be broken at scale. The four-stage post-quantum cryptography roadmap targets full network protection by 2028. The plan began with identifying vulnerable cryptography and creating an emergency “Q-Day” migration mechanism. If quantum technology advances faster than expected, accounts could be moved to post-quantum formats, with zero-knowledge proofs potentially supporting fund recovery. Ripple is testing NIST-recommended post-quantum signatures under real XRP Ledger workloads, including their effects on storage, bandwidth and transaction throughput. Candidate signatures are expected to run alongside existing elliptic-curve signatures on the XRPL Devnet in the second half of 2026. Ripple is also working with Project Eleven on validator testing, performance benchmarks and a post-quantum custody wallet prototype. A final network amendment is targeted for 2028 and would require coordination among independent validators. XRP Ledger accounts can rotate their controlling keys without changing the underlying account, which could make migration less disruptive. The risk, known as “Q-Day”, could eventually affect public-key cryptography across digital assets, including Bitcoin and Ethereum. Updated research suggests a credible threat window could emerge as early as 2032, although the technology is not currently capable of breaking major networks at scale. For XRP traders, the XRP Ledger upgrade is a long-term security and infrastructure development rather than an immediate price catalyst. Devnet results, validator coordination and approval of the 2028 amendment may support confidence in the network. Near-term XRP trading is still more likely to depend on regulation, adoption, liquidity and broader crypto-market conditions.