Quantum computing has emerged as a key focal point in the tech and crypto sector in recent days, particularly after Google suggested that a sufficiently advanced machine could potentially break legacy blockchains using far less computational power than previously believed.
XRP holders may see some relief after Ripple today unveiled a plan to make the XRP Ledger (XRPL) quantum-proof by 2028. The initiative is part of a multi-phase roadmap aimed at upgrading the network’s cryptographic security well before “Q-Day” becomes a real threat.
“Harvest now, Decrypt Later”
In a blog post published on April 20, Ripple stated that although quantum computing does not pose an immediate threat, rapid progress in the field has made the risk credible enough to warrant proactive measures today.
Ripple outlined a detailed roadmap to protect the XRP Ledger from potential quantum computing threats, with a full transition to quantum-resistant security measures targeted for 2028.
The urgency behind Ripple’s timeline is driven by recent research from Google Quantum AI, which estimates that roughly 500,000 physical qubits would be required to break ECDLP-256 cryptography. This marks a significant revision of earlier assumptions, effectively reducing the estimated resource requirement by around 20 times.
 
According to Ripple, there is also the “harvest now, decrypt later” risk, where malicious actors could collect publicly available encrypted blockchain data today, store it, and potentially decrypt it in the future once quantum computing becomes powerful enough. This poses a particular concern for long-term holders of digital assets, where data security must remain intact for years or even decades.
The San Francisco-based fintech firm added that these emerging risks require proactive and structured preparation across multiple areas, including performance, storage, usability, and core protocol design.
The Four-Phase Roadmap
Ripple has outlined a four-phase post-quantum rollout plan to gradually upgrade its systems to withstand future quantum computing threats.
In the first phase, Ripple focuses on establishing a “Quantum-Day” response framework to enable a coordinated migration away from traditional public-key signature systems. As part of this transition, post-quantum zero-knowledge proofs would be introduced to help ensure existing account holders can securely recover and maintain access to their funds during the upgrade process.
In Phase 2, scheduled for the first half of 2026, Ripple plans to begin formal testing of quantum-resistant cryptographic algorithms in collaboration with the National Institute of Standards and Technology (NIST). The phase will focus on benchmarking key performance factors, such as signature size, verification costs, and overall throughput, under real-world XRP Ledger workloads.
In its third phase, Ripple will deploy a hybrid cryptographic framework on Devnet, combining post-quantum and elliptic-curve signatures while exploring cutting-edge privacy tools such as zero-knowledge proofs and homomorphic encryption for tokenization and Confidential Transfers on the XRP Ledger. Phase 4 culminates in a full-scale XRPL amendment by 2028 designed for quantum-era performance and coordination.
The Competitive Edge of the XRP Ledger
Ripple noted that the XRP Ledger has an inherent structural advantage due to its native key rotation and seed-based key generation.
According to the firm, this design gives XRPL a head start in adapting to post-quantum security requirements, especially when compared to blockchains such as Ethereum, which currently lack equivalent migration tools built directly into the protocol layer.
XRP is edging slightly higher on the day, up less than 1% and trading near $1.43, but momentum looks stronger on a weekly basis with gains exceeding 6.8% amid a broader crypto market resurgence.
Bitcoin developers are advancing new proposals to defend the network against quantum computing threats, while the Ethereum Foundation has also created a dedicated post-quantum team to future-proof the ecosystem against the same emerging risk.
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