miscPromedium

Noisy Vault Challenge Scenario

HackTheBox

Task: recover a 64-bit vault key from a single noisy Qiskit oracle while satisfying structural ancilla-validation constraints. Solution: submit the smallest valid CX-only circuit, aggregate 4096 measurement results with per-bit majority voting, then reverse the recovered bitstring to match Qiskit's endianness.

$ ls tags/ techniques/
endiannessqiskitquantum_simulationnoisy_oracledepolarizing_noisemajority_vote
single_query_oracle_recoverymajority_vote_decodingminimal_valid_circuitqiskit_bitstring_reversal
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