Cardano Prepares for the Era of Quantum Computers

Cardano is working on solutions to safeguard against the threats posed by quantum computers. On August 23, 2023, the community reviewed proposals CIP-0197 and CPS-0034, with CIP-0197 focusing on the use of zero-knowledge proofs to protect ADA wallets. This proposal, currently under review, aims to secure funds without migrating existing addresses. Cardano is incorporating post-quantum cryptography into its Vision 2026 strategy, planning to replace key cryptographic components with those resistant to quantum attacks. Quantum computers could pose a threat to cryptocurrencies based on elliptic curve cryptography, as a sufficiently powerful computer could use Shor's algorithm to solve mathematical problems. Currently, the technology needed for such an attack does not exist, but it is estimated that around 1200-1450 logical qubits would be required to attack 256-bit cryptography. Cardano could gain an advantage if it effectively implements post-quantum solutions, which may be crucial for survival in the future.

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