Blockchain company Ripple has officially announced a multi-phase roadmap to upgrade the XRP Ledger (XRPL) network to a "quantum-resistant" state, marking a significant step in its long-term strategy to secure digital assets against the threat of quantum computers potentially breaking current encryption systems. According to the plan, the entire transition will be implemented in phases and is expected to be completed by 2028.
Amidst the rapid advancement of quantum technology, many security experts fear that current cryptographic algorithms based on public keys – the foundation of most blockchains – could be cracked in the future. Ripple says it wants to prepare for the “post-quantum era” rather than wait until the threat becomes apparent. This move also reflects a growing trend in the digital asset industry as major blockchain networks begin researching post-quantum cryptography to ensure sustainability for decades to come.
The first phase of the roadmap has been launched with the development of a “Q-Day” response plan – a term referring to the hypothetical moment when quantum computers are capable of breaking traditional encryption systems. Ripple stated that it has established an emergency response mechanism: if it detects that the current public-key signature system has been compromised, the XRPL network can immediately stop accepting the old signatures and force all accounts to switch to the new quantum security system. This is XEM a “safety brake” to ensure that assets on the network are not threatened in a worst-case scenario.
In the first half of 2026, Ripple will enter a risk assessment and algorithm testing phase. The company will conduct a comprehensive analysis of the impact of post-quantum cryptography on network performance, including processing speed, storage capacity, and bandwidth. Ripple is also collaborating with Project Eleven for validator-level and benchmark testing on the Devnet. A notable development is the deployment of the ML-DSA signature algorithm – a post-quantum standard standardized by NIST – along with the development of a post-quantum escrow wallet prototype.
The second half of 2026 will see a hybrid integration phase on the Devnet. Ripple plans to run post-quantum signature algorithms in parallel with the current elliptic curve signatures, allowing developers to test performance without impacting the mainnet. Simultaneously, the research team is exploring advanced cryptographic technologies such as post-quantum zero-knowledge proof and isomorphic encryption, aiming to enhance security and compliance for Tokenize real assets (RWAs) on XRPL – a sector attracting significant interest from global financial institutions.
