White House – Washington D.C.
30 October 1950
Signal Officer, 11:45 PM
We just received a
message, decrypt it and transmit
it to the President.
Cipher clerk’s note : I am sure that the message begins by
« General Z ».
Editor's note: The
Crib is given with spaces replaced by the
letter Z in capital letters for better readability. But do not
forget that the Sigaba interprets the spaces well and
translates them internally into the letter Z. On the other
hand, if you enter a letter Z (which is indicated by a
lowercase "z"), it is translated by the letter X.
Rotor Set 87185
NR033 1031 2225 EAT
XPG XPG GR042 EDFQV FCENJ LYBSN
YKODZ
MQTKZ VUHMU UQVTM QGSND ONPQG YXUNC UDAPQ TUIUN NILNL CXVLC
KHRFQ HPNYV HZPCC EPDTK CJZRM JWCYR WTNLC OAVUM KPVJV WDUBE
NPMXE LQGHE EGERN LLQEB VYHOB IGBNC LIZRA QUYEJ ITUDY IZQDB
EPIYD CAFPG WUVRW KDTRG DRNUB DJQOW LSSWH MUPFG