XRPL flips to quantum-safe signatures; 2,420-byte proofs replace elliptic curves

Key Highlights

• 25, 2025 at 12:15 pm UTC Share Cover art/illustration via CryptoSlate.
• Image includes combined content which may include AI-generated content.
• The XRP Ledger (XRPL) is ending the year with major technological developments after a year that saw it gain significant adoption and milestones. On Dec.
• 24, Denis Angell, a lead software engineer at XRPL Labs, announced the integration of “post-quantum” cryptography and native smart contracts into AlphaNet, the project’s public developer network. The ‘Q-Day' inevitabilityMost blockchain networks, including Bitcoin and Ethereum, secure user funds using Elliptic Curve Cryptography (ECC). This math works because current computers find it impossibly difficult to reverse the calculation and derive a private key from a public one.
• However, this security model relies on the limitations of classical physics. Quantum computers operate differently.