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Questions  |  score: 5  |  Solved By 41 People  |  43918 views  |  since Apr 07, 2008 - 01:22:52

The Nap (Crypto)

The Nap
You wake up at 4 a.m. and sadly realise, that it is another day to work.
You make your breakfast, and read your favourite newspaper "Der Angriff".
The date is 5th June 1944. The news predicts there will be no invasion for several days.
Even your boss is away for vacation. You arrive zur Wehrmacht at 5 a.m., and
the night shift collegaues greets you. He gives you the daily codes
and leaves immediatly the communication station.
He is really a lazy guy and havent established the enigma settings yet.
You really think its gonna be a lazy day - alone.
You drink some beer and wait for incoming messages. As nothing happens,
you happen to fall asleep. You dream very well but suddenly the radio begins to ring.
As you wake up from your deep dream you knock your beer and it soaks the daily codebook.
You say some round oath, pick up the radio and record the encrypted message:

U17 DE U101 0600 = 4 = VRS SDX =
JSPK NIPN OZTR CYEW QICZ PDNO KRBU AXKE VTIS
HIDE WZOY PGZN ERCY ADWI FTOB FYSL SKTD MLJX
XVSZ JXCW BKNV IJMG RFOV YWYZ CKOZ ZPIV JLEN
ZUUX NEAP QGOV
After the conversation you realise that the keys for today were partially destroyed.
You imagine how angry your superior will be after returning,
if you don't decrypt the message immediatly.
The wasted codebook is here: codebook;

Your job is to decipher the encrypted message, and the solution is
the last original german word in lowercase concatenated with
the total number of possible configurations in bits - if the wiring of the rotors
is secret.

For example AES128 has 128 bits. So if the last original german word is "WeChall" and
the total number of possible configurations in bits is 128 the solution is:
wechall128
Not a single beer-drop has been wasted during the making of this challenge :)
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© 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017 by Z