Hebern: 7th Problem

Munitions Buildings, Washington D.C.

Signal Intelligence Service

March 9th, 1931

My dear students,

Now, you are ready for the ultimate problem
about Hebern’s cipher machine: decipher messages
and recover rotors wiring from several
cryptograms. This problem is quite similar with
which the navy challenged me.

To help you, I'm telling you the topic of the
messages: the American Civil War and some
probable words : Confederate , Union Arm[y|ies],
[the] battle [of], [Major] General, General [ in
chief ], Potomac [River], Lincoln.

Furthermore, I give you the initial position of
the rotors and ratchets wheels for each message.

W.F. Friedman

Dispatch #1 – External Key : AGRRAAN

VIVJP YUVWZ QQKTE QYOGX KCMEM ZADSI TMIGR YPCAS RRBJE AQMRP

UAMGE RFPAQ WVNKI CWGQA DXBUN YMUIR RPPWM DAJZM QUVTX ZATOR

MSKDE QNIAU JVSFR MJVRK KTKOW YJSSW UHDXF LPOVY DQGQR AYLEN

UTUMN GDOKN EGNHD LIHXA AXZYX BXSBX PDWOU YXNTW PANEI VOVBK

NEMAO DZSKP JHXSB WKZTJ TCTZX PFDKR ICYVJ JITAI BBQTO BCJNO

YXPNF ULDVL BTTEC GHBLC OPAXA FXPII YUVKT HVXMV RYNJB KNENI

RBXHW DHUBJ XFAKP JLXYS LEPUI PJGPG MPPKD CQPSH LNAHG VIQNA

HOCMA CBOVM EWDPS GOJXP VEZPQ KKNXM DXALA YFZRF RLGEP ZAYDZ

RIRQD TEN

Dispatch #2 – External Key : GOBBAAN

YZAMX IVUKO YUJMY DYUZP ZPQYS QWTGB ZGALC TTCHI UYOYQ HVZTB

SMDUP GVQFY MCSEQ AHUPH VOKVT VAQFO TQNJW LATGJ SPEGZ MZZSS

YOIGK OVLFL DDBCV QNXMG WQUEB IXEVG GYSBR LQAAA QBQQO KUSRC

HLXNZ DOUUG HERUD KHSAP EZHAY GKEMU ZSELD AAONH PCYLL EDMZS

CUYHT BHGEL RWHEA WJKMF LWHDB OLJQM GQHCR UAMHK RXXGI OEXMB

PHZIR WYSGA TXKEZ TGFFS OUMOU ANVPV KOTTP TFLGI WUWDK FTNMO

DVAYQ ZFGMZ NZOGL DLZEZ LHDWI UGNSM F

Dispatch #3 – External Key : BLOOIIS

FLJES KKVGN HDBDF XAEGI ZPIJW EDXJS KIALW FKUAW KTSHM TVCXU

UNVZY QLFGS YKKPK YZJUB ECFJA HAAHR JTBED JSMMD IXGVI RPQGI

QGPQA YODJR LABVF ITSGS IXCMR TUUOE BIEGK KGRYZ BQOYZ ZTTGK

HZFCD KPAPK KWXIW POBGN MTJRX QJOTG CHIJJ DATBJ OZGBM PYYXV

ILHBR NCPRV OIYRD MUSVG CWCJT HWRTE RCBDI RGXBR RJNCR KHWVE

YETNA XFBOS YKSYC RPLQG BQAKI WBFCC XVNWQ YKVNS VTMPB FDVLX

OFIGF JCXYQ CXEBQ MTTMC DPDID IWVIM UVYWG JKVRS LENLX YYPLF

BRFTU XIYFG KBIZS RSPKL VGXRT GVBSP IMOIQ EZBAS JGEZX CNORQ

IVUMC YZWWG WAVKB KBGNP LGDZK IYJYD LVZPT VSIKT

Dispatch #4 – External Key : AGAANNA

ZHVNG QVTFE WSKZD DYPVN IFSJD TTVCB XVMAU URPFA AGPQD ANCYE

UMDKE YZTRE GAYRI IGPFJ WXZOH LFHCD YSSAK FUVYC QBYBZ KSGJU

PPVVH HQYGX FOANB REKRE XOCAJ PRQTB GPZAA ULXPM XVEDY EPFIT

AWAZZ TNQFT KEGXB WCOTM VJGDF EPHEW MHCNO SLMKH WFUHW YEGMD

MEZLS LMXOL MNXRE YFHZC COAOC INDPJ YGCHT ANCGJ SSXAS AZQHV

LEHQR JKWUE CNRHL GFUWC AXVIB MLMDC KNUMQ DYUTS ZBPCU LRGHX

AREK

Dispatch #5 – External Key : CUNNEEO

EPWSF XSBMQ HWDTC VTGCR FBAKO KYKJG SOZUS OLEJT PXTNU TLZFS

ARKWC MGMHI ABVCP ULOSV ROWWH SZPLR GPMXP VKXWR MGBAU TWDXY

ZGEDR DONZX ZPRZK OGEYC YXWKS YYKSS WVUKE XLLFC QOUVE TVESJ

MNDIF WCCFP DTGKG OBCAW XSULX VMCWG MDJBF MDDHZ DCEZT OLKRV

TUQSH FVCKM RJZRZ GGBKE VLTJB TTBAL DHGXU VYSSQ OCIRX DMWAA

PHZAU XWRJY SCFYK MWZJO ZBJCE OCPDO UTKVJ ZWQGW JCGZL STDOI

KCSXB LQXKA OMEBA OTSTO IKPIF BCOWI UYYHI XJQSU QIPCM MQDIG

JL

Dispatch #6 – External Key : DOVVEER

TPFQJ OBGGN NGILF JDWXR UPJJD MQXKE QUMIC DUMTR AXLHF QHYUJ

KWHYM NJNPQ OEVGP LIGWE KTGHM MQWJD JASSO VZTKH GLYEU JVLLC

ZOXMF YXGUH KFAGG PDRUJ NIDND EPCEO LDOJN WJEPG ZYSUB XZIBY

KMSVT QLRTB DRUSF YOKJM GFCUT MYRGT QHECC XYJGQ TMVMV METXM

VBUXR UUAOV XPYDW EIZEY FBFYR RDNOM QKHGY YUYZE REAXE AIFZT

ZAWAS WLBDL VQPWW EHWJX YCDLV XYUHX OZJSE PEZJR QLKTV DMFHE

BARJQ ZCBAG FZYZY TCCDI ERSUG VTBOY ZSOQV RUIIB JTBFW VOCWK

LQUNS RFBBC ODAIP GHNBZ QQGSL YEJGJ ROBHT EDI

Dispatch #7 – External Key : GENNOOA

WRNTV RYHRH CIXTY TGQKO PIJDJ LZQIW PZPMU EEVAD EPFYO SQIUU

YRUOX ZOLAO YNVYI VWXOS KVBDF WXWEZ HPUQV WKQPH FSHPR FOYOA

VCDAF RVUAW ORKOY LHGNL DZAJJ FZUII LRHPD MVPQV MFCWF IEMIC

LFUIY QTCCK UNTAV PGZYZ OMICO POULB SQCYF BXVWY LZAHL ORMZG

ATCWT ZZGNE OYAYD LVOYO QDJBL FVFZY XLTAE HUXAJ ACTJB YRZVD

RKZOB IPZAX UGICF OWIHS OPWZX VVDWZ UILBO QOWNJ DXIXM MPOFL

KRDIO VRHUO CAMPU HWUIW NMLFQ JQUPQ XKGRB MXKFM ZMIQE UREMK

FKXQS ZVTTL EJLCH CQEZD YDDPY POTCL FVNDK SKYOR YCZYE EVGPA

EQNTB

Dispatch #8 – External Key : HAGGUUE

FYWIS JDBBJ ZBYMH GJIGM NCTDL DFGBU BLZKC MSDPZ MFALF DJIIK

CVFHD MHUKJ EJLTI KCOAZ EAYYO CRZTL FZNJI PWQIS QYCZY ZWSYB

RWBIR TXPYP KKUOP REWDO OIVPU MFJJU YNFUQ VHGVU GLFMU YYXJR

LZYSW KNJCF EACTQ VVOZD HTXWH HZJAO OZZPL LCGAF CEWCW MIEEQ

SEIQG AUANI XZGQJ EAXIT SJVMH NTFUT IXXFY IXICV JGJKW ZPIXG

HCXOO NEUHX PFVJN MTSLM EFNVE GATHR LZGEJ KOCAR TDCZT HZDGO

RHZRW HGHDJ VOJWW FZ

Dispatch #9 – External Key : MONNTTE

WITPR WJHEC FSTNI XSXYZ RTOQY WPPVW GLOOC MZSAO LFJGZ UGVYT

RITUC QYICI HBIGF RXGMR LJKRD DYZAV SFIDW PFTRL HXBWY TFQRP

WHZBF SWMKK RMMXC PKZDL ZOPBC WHLQA HHQIO PPMCT VVZTB EHVES

WPHCC RLQNP HLNGE AIOVF GXBNR QMPDX NTHRT DNOJR MWYGU XKETO

LGMTP WMMKT IEJNA RMWBO JEAOV OVUZQ HIYOP VMMZS NUQJZ LVQDY

TXTJC HLLPC LGKKT QEILM OJWOD LACMN IEMAK FKHND GORGN HSJXC

VXQKE IFSYE VTDDC SXGXU KYJJE KQTES VCQCU CFHBW RJFAM QZJMK

UKFUF VCDVE QRSGB SWBKD QGJVU BFRSG TEQGH BKFGQ RSQOV RDKZO

XYIKU GZEVA XIDVS YTYIR KOIJV OYQBW DNTCY FQXJU DPHSB LAOFZ

FUTGG HUJZR TMDAE FHPCO JBLSX DBXIB FSGVE EQFIF CNCOP XTOE

Dispatch #10– External Key : NEPPAAL

HLVTE TQPWK WVQLM TGSXE GFBOZ EMRWI ASXCT LHNRP EZIXX ZKUUF

NYOUJ CIAKV XTOYJ SRMHB PFWTX RTDZN QDELN HIIJA XVNPA MSZMD

FSPOX UIMGI BVKHU ADEHU JOYVX QSNGL KMTUZ YCFHO WIWPH KICKI

IEVSN ZXWAZ NZKYE HRLES VTGTO XYSYJ VUTIP GMNSE OMUAJ ZMILW

ONFYU RVKKT GVVDV BZGKE LGOMF PHBHM QYQSP VQJIT NFVKG BGWVZ

GAFFX UMNPE DPLST GWBGZ GQXVL ZOMKZ VCXVE NWMKV CMPYA HYJNA

QCMIH TPZJR ERQVP PGVHH ATNCB MGOWD DTHQU HJKWH SGCKY LFQUS

DIYLE VPQDL PKNXW QOCPP OO