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Quantum Hardware Closes on Cryptanalysis

As quantum machines steadily enlarge the problems they can solve on real hardware, demonstrations of cryptanalytic primitives keep advancing, pushing post-quantum migration from precaution toward necessity.

forming · confidence 40 · Emerging (watchlist) · tracking since July 22, 2026 · updated July 22, 2026

Why the conviction moved

  • Jul 22
    Strengthened +3

    Researchers ran Simon's algorithm on an IBM Heron-generation machine to recover hidden periods in an Even-Mansour cipher structure, scaling from N=4 to N=10 — a textbook cryptanalytic primitive executed on real quantum hardware, advancing the timeline that pushes post-quantum migration toward necessity.

Source trail

  • Supporting · July 22, 2026

    Researchers Run Textbook Quantum Cryptanalysis on Real IBM Hardware

    Researchers ran Simon's algorithm on an IBM Heron-generation machine to recover hidden periods in an Even-Mansour cipher structure, scaling from N=4 to N=10 — a textbook cryptanalytic primitive executed on real quantum hardware, advancing the timeline that pushes post-quantum migration toward necessity.

    arXiv (cs.CR)

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