Quantum Computing & Crypto Security Wiki
A reference guide covering quantum computing fundamentals, cryptographic threats to blockchain networks, post-quantum defense standards, and the industry landscape.
3Quantum Computing Fundamentals
Quantum Bits Operate on Rules Classical Computers Cannot Replicate
Qubits, superposition, entanglement, gate-model processors, and quantum annealing. The physics and engineering behind quantum hardware.
Thirty Years of Quantum Computing Milestones from Shor’s Paper to Willow
From Peter Shor’s 1994 factoring algorithm to Google’s Willow chip in 2024. Key breakthroughs, qubit counts, and the road to fault tolerance.
Five Companies Control the Pace of Quantum Hardware Development in 2026
IBM, Google Quantum AI, IonQ, Rigetti, and Microsoft. Architectures, qubit counts, revenue, and roadmaps compared.
4Cryptographic Threats
Shor’s Algorithm Can Factor Large Numbers Fast Enough to Break RSA and ECDSA
Peter Shor’s 1994 breakthrough and why it makes ECDSA secp256k1 and Ed25519 vulnerable to quantum attack.
Every Major Blockchain Uses Encryption Quantum Computers Are Built to Break
ECDSA and Ed25519 across Bitcoin, Ethereum, and Solana. Exposed public keys, transaction-signing windows, and the $2.1 trillion at stake.
State Actors Are Collecting Encrypted Data Today for Quantum Decryption Tomorrow
The NSA-flagged HNDL strategy. Blockchain data is public and permanent — exposed keys are already being cataloged.
Grover’s Algorithm Halves SHA-256 Security but Does Not Break Bitcoin Mining
Quadratic speedup on hash functions, 128-bit effective security, difficulty adjustment, and why Shor is the real threat.
2Defense & Migration
NIST Finalized Four Post-Quantum Algorithms and the Migration Has Barely Started
CRYSTALS-Kyber, CRYSTALS-Dilithium, Falcon, and SPHINCS+. Lattice-based, hash-based, and code-based defenses against quantum attack.
Address Hygiene and Key Management Protect Crypto Wallets Until PQC Arrives
Fresh addresses, Taproot key-hiding, hardware wallet PQC readiness, account abstraction, and multi-signature defense.