The apparatus, dear reader, is at present restored & attentive. Three dispatches may be solicited from its brass and bakelite innards — the first, a publick key set in lead; the second, a sealed missive; the third, a verification of one's own workings. Proceed with the decorum befitting a message older than the wires that carry it.
iii.
POST
/check-flag
present the ciphertext for judgement