The quantum menace: Quantum computing and cryptography

Quantum computing continues to inhabit the nebulous space between practical application and theoretical speculation, but it is edging closer toward real-world use. One of the more interesting use cases for quantum computers is modern internet cryptography.

Quantum computing and qubits

Quantum computing's name comes from the fact that it relies on the properties of subatomic particles, governed by laws that seem strange to those of us rooted in the macro world. In particular, quantum computers use qubits (quantum bits) instead of the binary digits (bits) we know from traditional computer systems.

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