Blockchain security company AmericanFortress has unveiled a cryptographic scheme that it says could protect existing cryptocurrency wallets from future quantum attacks without requiring users to move funds, rotate keys or change wallet addresses.
Unlike most proposed post-quantum approaches, AmericanFortress said its scheme allows existing wallet addresses to remain unchanged while adding post-quantum protection.
The company published the proposal in a technical paper on the Cryptography ePrint Archive, describing the scheme as compatible with seed-based hierarchical deterministic wallets used across Bitcoin (BTC), Ethereum (ETH), Solana (SOL) and other blockchain networks that rely on elliptic curve cryptography. The paper has not yet been peer-reviewed.
According to the paper, the scheme uses zero-knowledge proofs derived from a wallet’s original seed phrase instead of replacing the elliptic curve cryptography underlying existing…
