Ripple Outlines XRP Ledger Quantum Upgrade Plan for 2028

Key Insights:

• XRP Ledger (XRPL) quantum upgrade targets full readiness by 2028.
• Ripple says “harvest now, decrypt later” is a real planning risk.
• XRP traded near $1.43 as Ripple outlined the roadmap.

Ripple has placed the XRP Ledger (XRPL) quantum upgrade at the center of its long-term security strategy. Notably, it is focusing on the full post-quantum readiness targeted by 2028.

The company said the risk is not immediate, but it no longer sees the threat as abstract.

Meanwhile, XRP price traded near $1.43 following the news, while Ripple outlined a four-phase plan to protect wallets, signatures, and account security across XRPL.

Ripple’s case rests on a simple point. Most blockchains still rely on cryptographic systems that future quantum machines may eventually break.

Google Quantum AI added urgency in late March when it published new research showing that elliptic curve cryptography used in blockchain systems may require fewer quantum resources to break than previously estimated.

The XRP Ledger (XRPL) news showed that Ripple also pointed to the “harvest now, decrypt later” risk. In that model, attackers collect public cryptographic data today and store it for later use.

If quantum hardware improves enough, that stored data could become a path to stolen funds or compromised accounts.

Ripple said the findings do not indicate an immediate failure of current systems, but they do show that networks securing long-lived value need a migration plan now.

For XRP Ledger (XRPL), the exposure is practical. Each signed transaction reveals a public key on-chain. Over a long holding period, that creates a future attack surface if quantum capabilities reach the required level.

Ripple framed the issue as both a technical and an operational challenge, because any response must protect holders without disrupting the live network.

Ripple argues that XRP Ledger (XRPL) enters this transition with an advantage. The network already supports native key rotation, which lets users move away from older keys without abandoning their accounts.

Ripple contrasted that with Ethereum, where no protocol-native equivalent exists, and users may need to move funds manually or rely on smart wallet structures in a post-quantum migration.

That does not make XRPL quantum-safe today. Ripple was clear on that point.

It said these tools are only foundational pieces, but they give the XRP Ledger quantum upgrade a more practical migration path than networks that would need to build those features from scratch.

The first phase of the XRP Ledger (XRPL) upgrade centers on emergency recovery, sometimes described as Q-Day readiness. Ripple said it is exploring a contingency plan that could force a move away from classical signatures if those standards fail.

One route under review uses post-quantum zero-knowledge proofs to let users prove ownership and migrate funds without exposing compromised keys.

The second phase, set for the first half of 2026, focuses on testing NIST-recommended post-quantum algorithms and measuring trade-offs in performance, bandwidth, and storage.

Ripple said it is working with Project Eleven on validator testing, Devnet benchmarking, and early custody prototypes.

The third phase, planned for the second half of 2026, introduces hybrid deployment. Candidate post-quantum signatures would run beside existing elliptic curve systems so developers can test usability and system impact without disrupting the live chain.

The final phase aims for a full production transition by 2028, backed by an XRPL amendment and broader ecosystem coordination.

The XRP Ledger quantum upgrade, therefore, looks less like a single patch and more like a staged infrastructure rewrite. Ripple’s message is that quantum risk has moved into planning range, and XRPL intends to be ready before that window closes.

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