Solana Faces 90% Speed Drop in Quest for Quantum Security, Testing Scalability Limits

April 5, 2026
Solana Faces 90% Speed Drop in Quest for Quantum Security, Testing Scalability Limits
  • Analyst Crypto Patel says Solana’s price rally prospects hinge on managing the 90% speed trade-off while preserving scalability.

  • Disclaimer: standard investment warning accompanying the report.

  • Solana faces a difficult balance between boosting security against quantum threats and preserving its famously high-speed network, creating a central design dilemma for the platform.

  • The tests are designed to assess both functional viability and scaling issues when replacing current cryptography with post-quantum systems.

  • CoinDesk reported these findings, citing Uk Jin as the source for the information.

  • The broader context notes that major players like Google and academic researchers have signaled looming quantum threats, fueling post-quantum cryptography discussions across networks such as Bitcoin and Ethereum.

  • Early tests suggest a potential 90% drop in transaction speed to achieve quantum resistance, highlighting a major scalability trade-off.

  • SOL trades near $80 and has fallen about 35% year-to-date, reflecting bearish momentum despite continued usage and upcoming upgrades.

  • Solana has historically processed far more transactions than Ethereum, underscoring its high-throughput advantage though the upcoming security upgrades threaten this edge.

  • Solana Foundation began testing quantum-resistant signature systems with Project Eleven, with initial post-quantum signatures already deployed on a Solana testnet as part of preparation for quantum risks.

  • A key structural risk is that wallet addresses derive from public keys, potentially expanding the surface area for quantum attacks to target private keys.

  • Early results show post-quantum security increases data sizes by 20 to 40 times and reduces processing speeds by roughly 90%, with signatures themselves 20 to 40 times larger than current ones, significantly impacting network capacity.

Summary based on 3 sources


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