cryptography

Cryptography is the practice and study of techniques for securing communication and information by converting data into a form that is unintelligible to unauthorized users, typically through the use of mathematical algorithms and keys. It ensures confidentiality, integrity, authentication, and nonrepudiation of data.
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  1. Quantum-safe Bitcoin transaction mined without protocol change

    Quantum-safe Bitcoin transaction mined without protocol change

    StarkWare reports a quantum-safe Bitcoin mainnet transaction StarkWare says a Bitcoin transaction using Avihu Levy’s Quantum-Safe Bitcoin method has been mined on mainnet without changing Bitcoin’s consensus rules. The company describes the transaction as the first mainnet use of the QSB...
  2. Bitcoin post-quantum signatures: Blockstream backs Falcon

    Bitcoin post-quantum signatures: Blockstream backs Falcon

    Falcon emerges as the leading lattice option for Bitcoin Blockstream Research has published a detailed evaluation of lattice-based signatures that could one day help protect Bitcoin transactions against quantum attacks. The report compares Dilithium, Falcon and Hawk across on-chain size...
  3. Hardware Wallets Show Post-Quantum Signatures Are Feasible

    Hardware Wallets Show Post-Quantum Signatures Are Feasible

    Existing Wallet Chips Meet a Quantum-Signature Test Blockstream says benchmark implementations of several hash-based post-quantum signature schemes ran on four widely used hardware wallet families. The result does not settle the whole quantum-migration problem for Bitcoin, but it challenges the...
  4. SHRINCS parameters cut Bitcoin quantum fallback signatures

    SHRINCS parameters cut Bitcoin quantum fallback signatures

    Blockstream narrows a post-quantum signature trade-off Blockstream Research says it swept 25,935 parameter candidates for SHRINCS, a hash-based post-quantum signature proposal aimed at Bitcoin. The work focuses on the stateless fallback path, where the team reports a signature around 5.7 KB...
  5. Why Experts Urge an Immediate Shift to Post-Quantum Encryption

    Why Experts Urge an Immediate Shift to Post-Quantum Encryption

    Why the Shift to Post-Quantum Encryption Can’t Wait Any Longer A recent warning from smart-contract researcher Gianluca Di Bella at a UN event in Copenhagen reignited the debate on whether the world is prepared for quantum-powered attacks. According to him, waiting another decade could be a...
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