Hebern: 2nd Problem

Washington May 5, 1924

Dear Laurence,

So that you can assess the quality of the Hebern
machine, I have prepared some increasingly
complex challenges.

The first is almost simple. You know all the wiing
but you do not know the key (position of the
rotor, its direction, if we use encryption or
decryption).

To complicate the exercise, the message is
encrypted with a simple substitution before to
be encrypted by the machine. So if you try all
the combinations by hand, you may not find the
right solution. Personally, I know how to solve
this problem because I spent a while at
Riverbank Laboratories.

Good luck !

Agnes Meyer Driscoll

Wiring :

Keyboard : ABCDEFGHIJKLMNOPQRSTUVWXYZ

Rotor : OBCLJATDIUZXSWRHNYEVMGKFQP

Lampboard :ABCDEFGHIJKLMNOPQRSTUVWXYZ

Cryptogram :

WAQMH HOQCE SJIER IPPJN QXRSH

DHNDT SYEGJ USICN NRQWU EYRPY

HUQSN HELAM TJONC QGPOQ LMUJL

GVGLW DTRKS GCCDJ QJLBK FUUFD

NMWYR VCXLT IWCXI FHEFD WAJJL

PRQWB DHDND KDFCT XZNWL SWRJ