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SIS - Munitions Building – Washington, D.C. March 20, 1931 My dear students, I asked you to study the Kryha machine. Here is a little challenge inspired by my friend Parker Hitt. The subject of the messages is the Panama Canal Affair (1903). The messages are in English. The words are sepa- rated by the letter J. All the messages have been encrypted with the same key. Good luck! W. F. Friedman 1 - N B I K N Q B H Y F G R R D P K D V F R S 2 - A V S T Q T U M X H Y M K Y B K P P D L G 3 -
L F L V R S B J G M V S S O L G Z I O C V 4 -
A Y X V H H W Z Z W G W F J R T W V B K S 5 - J S K
P A X J T J B G I N U U C P V X X B 6 - M G D A R F Q J L Z O O T U A F Z K N A W 7 - M G F P O Y U X Z P S R D X A L K A O Q B 8 - M M H
V R E N U V S D O J Y Z L C I M N V 9 - R B K A O Y L X Z K W O V P S K K Z J Q W 10 - I P T T C N W U Z B N U I H P Q L K N
Y L 11 - J I S A V Q U U
Y X M K F U R M B L B M A 12 - M G F P X Y P Y
P D K I F M W K K C S M Z 13 - J S K P U B V Y
A S Y X I X U F L F J H P 14 - N B I U H Z S Y
N W X J T F U L C Z F X I 15 - V Q J Z S Z L X
K C F Z N N A M B L B N V 16 - I Y X P F G H H
Z W M W R E P G O E D Q B 17 - M Z N Z W E W X
V W S H C G L P Z V B K S 18 - J S K P J M F H
O U N F S T R J J C Q U O 19 - J I Z P F G D J
X H G F T J X P B X M Q E 20 - I Y B P X Y N Y
A V O B T I L G K N R M 21 - M G F P S B K P
W J H P I J Z P U K 1 - NBIKN QBHYF GRRDP
KDVFR SEVLS THLBP HBKJA CESHK PPYTI OJKSL SFGXC ZENAK UMEQO EHPXE FZTAE IBVXD VWBRN BFSUD PUSOT ZADBS PMHBQ EVWOB GMAIZ BKNEE FTRGV WXEQO EIUWO GFADN NQYGD ASTNL QHCOI IANRM CINZB HCBFW TUPMK NDJYK YRDKV SWZMD DPDPD NVVVQ JXUWZ XFRXU BPRDR MTEUM DJQIB YNWXF TIWLX AGUEH XHAVJ OCEFW UXKFN VRKXG JFTVB MBZQU NIEAA TXSON HBLWQ XYYJR EROKS WOADI IPY 2 - AVSTQ TUMXH YMKYB
KPPDL GQAQU JHLKW TBCYK REGHT PGZKC 3 - LFLVR SBJGM VSSOL
GZIOC VBROI NHRMQ SMWIH ZRRNE 4 - AYXVH HWZZW GWFJR
TWVBK STIKS CXUDZ AYRAU QECZT VJCKB JOC 5 - JSKPA XJTJB GINUU
CPVXX BBGGV UVGTR YTRJH SOHUN 6 - MGDAR FQJLZ OOTUA
FZKNA WEAKC BXGJS XIYGN 7 - MGFPO YUXZP SRDXA
LKAOQ BZESP NREWE Y 8 - MMHVR ENUVS DOJYZ
LCIMN VHIQV 9 - RBKAO YLXZK WOVPS
KKZJQ WXCKQ JWX 10- IPTTC NWUZB NUIHP
QLKNY LHABS NLHBO CNXMO CEMSP IKZAM AYVEO 11- JISAV QUUYX MKFUR
MBLBM ABFYW NKIKE AZLV 12- MGFPX YPYPD KIFMW
KKCSM ZMHGH JXBOS R 13- JSKPU BVYAS YXIXU
FLFJH PT 14- NBIUH ZSYNW XJTFU
LCZFX IVVKB N 15- VQJZS ZLXKC FZNNA
MBLBN V 16- IYXPF GHHZW MWREP
GOEDQ BTXBC PXJIR RKLJP JTBZN PGTTV O 17- MZNZW EWXVW SHCGL
PZVBK SXALC BX 18- JSKPJ MFHOU NFSTR
JJCQU OT 19- JIZPF GDJXH GFTJX
PBXMQ E 20- IYBPX YNYAV OBTIL
GKNRM 21- MGFPS BKPWJ HPIJZ
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