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The Complex Path to Quantum Resistance

• upofadown 5y ago
  >The current estimates of the number of qubits in a universal quantum computer needed to break RSA 2048 (asymmetric cryptography) and AES 256 (symmetric cryptography) are 4,098 and 6,681, respectively. The article had previously claimed that AES 256 was immune to quantum attacks. Then the article lists the number of Q-bits achieved by various companies. This is super misleading. The 4098 Q-bit requirement for RSA2048 is in logical Q bits. The list of achievements is in physical Q-bits. Up to now, no one has been able to achieve even a single logical Q-bit.