Zcash Developer Zakura Proposes Fix to Stop Quantum Computers Linking Shielded Swaps
Summary
Zakura proposed deriving a separate incoming viewing key for each Zcash address publicly shared for swaps, limiting the damage if a future quantum computer breaks one key. The approach leaves spending keys unchanged and requires no Zcash network upgrade. Wallets would use private information retrieval to check NEAR swap payouts without revealing queried addresses. The proposal targets a privacy risk in NEAR Intents swaps, where refund addresses are publicly recorded and can be linked to an account. Zakura said software wallets could integrate the method in the coming weeks, with hardware wallets to follow after firmware support.
