XRP Ledger unveils quantum-resistant upgrade
6.6 Tech XRP Ledger plans a quantum-resistant upgrade using ML-DSA-44 signatures, boosting storage needs but keeping transaction fees unchanged. Users can add new keys and disable old ones, with full quantum security by 2028.
The XRP Ledger Foundation has proposed a quantum-resistant upgrade to safeguard user accounts from future quantum computing threats. This initiative, part of the 2027 roadmap, introduces the ML-DSA-44 signature scheme, which was approved by NIST in 2024. Users will be able to add a quantum-secure signing key and deactivate their old key, enhancing account security. While the upgrade increases transaction storage requirements, it does not raise base transaction fees; additional costs will be absorbed by network operators. The proposal addresses the risk that quantum computers could eventually break current cryptographic protections by deriving private keys from exposed public keys. Migration to the new system will require manual key rotation or transferring funds to new accounts, with a particular focus on large-balance holders such as exchanges and custodians. Technical development, compatibility updates, and validator testing are ongoing, with a migration study planned for 2027 and full quantum security targeted by 2028.
