◈ PROJECT 2811
PRIVATE CHANNEL
CLASSIFIED PRELUDE · FILE 00

THE
PROLOGUE

Before the real mission can begin, fifteen locks must be opened. Some keys will tell the truth. Others were made to mislead you.

MISSION STATUS AWAITING EXTERNAL KEY
00 / 15
?

The first key is not inside this machine.

A human keeper holds the eight digits. This time, her identity and the sentence she accepts are both encrypted.

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Layer I. Dark moon = 0. Bright moon = 1. Five moons form one binary letter, with A beginning at zero. The seven recovered letters name the keeper.

Layer II. Use that seven-letter name as a repeating Vigenère key. A = 0. Recover the sentence by subtracting the key letters from the transmission letters.

FHVAIYIZTFZBVXDEDMMOIDSNPAGHUSKINPIOAEVOGIDAJM

Send the restored sentence exactly to the keeper you decoded. Only she can return the new eight-digit reply.