XRP Ledger Sets Goal for Quantum Resistance Transition by 2028

The XRP Ledger (XRPL) has announced plans to transition to a quantum-resistant cryptographic system by 2028. The transition will be gradual, replacing the cryptographic keys used for transaction approvals while maintaining existing account addresses. Ripple revealed its goal for the XRPL's quantum resistance transition in a roadmap published on April 20, 2026. The roadmap includes testing quantum-resistant signature algorithms, a hybrid approach using both existing and new cryptography, and security checks for validators, wallets, and the network. A key feature is key rotation, allowing users to replace the keys of their existing accounts without creating new ones. However, key rotation alone will not ensure quantum resistance; the quantum-resistant signature system must be applied to the actual network for the transition to be complete. Ripple's plan will be executed in four phases, with an analysis of quantum risks and performance impacts in the first half of 2026, followed by testing candidate signature algorithms in the second half. Subsequently, the new cryptographic system will be proposed as an amendment to the XRPL, with a goal to expand it across the network by 2028. Quantum-resistant cryptography may result in larger key and signature sizes compared to existing cryptography, necessitating verification of both security and performance, as well as wallet compatibility. Project Eleven announced its collaboration plan with Ripple on May 19, 2026. Both parties will examine the validator, custody, network, and wallet layers of the XRPL and test hybrid signatures and quantum-secure custody wallets.

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