Chapter 6: Analysis of a five wheels Hagelin Cipher Machine ---- Problems Global remarks: - We use only five wheels : 25,23,21,19,17. - There are maximum 25 bars, then the maximal key value is 25. - We use the standard shift of the M-209 : 25 (-1). Except this last feature, the cipher machine used for the following problems correspond to a C-36. Contrary to former problems, in this chapter you attack a genuine cipher machine, not a fake one (but simpler than a M-209). 1. Message begins : "HONG KONG WAS ATTACKED ON EIGHT DECEMBER". JHJHA FKWRE IOFGC DVUCZ XGUAY YIJLE CYAJD FAQFI YNHAN DANNB CEVDM YQANJ VVNHA UCWFO LGBZQ XZXJJ GYCLY FVDLQ UTZSH BJSVW TRUJF RVWSI UUHXZ HZIOS ZICHR TDFIA DWNCV FWNPG UPEFA XWZAJ UBYWQ SXQQA ZSDCA RKTBF SMHXX Hint 1 (in caesar cipher): QR RYHUODS Hint 2 : WKHUH DUH WZHOYH OXJV IURQW RI WKH ZKHHO WZHQWBILYH Hint 3 : WKH WHAW HQGV EB "SDUW LQ WKH GHIHQVH" Hint 4 : WKH WRZ ODVW OHWWHUV DUH QXOO Hint 5 : WKHUH DUH VHYHQ OXJV IURQW RI WKH ZKHHO WZHQWBWKUHH Hint 6 : WKHUH LV RQOB RQH OXJ IURQW RI WKH ZKHHO WZHQWBRQH 2. Messages enciphered with same initial "wheel settings". No. 1 - GEUKE JBUCQ YIDFG GSLIH ZBZUH JMTCV HCTBS NEGJD MNPOL THXGD NVOQC SLPVW NZNZN KVKBD MRSUL OBXXX No. 2 - YUQQW CFDGO FHGKA CJCMG YYNPM TSEDI MCFRS NLGXD NMUNS VCRUT NLFTZ DHDEH SJUNU DWFQP EKMZO AIDWH BBRES IYXGL HSOMC AKUFH PBVDO CDHDZ IFHAC KYYFB RIXXX No. 3 - GPKKS UDOPJ WJPRD SCQPG UJFKR UVPYW WUPBX CIJQI MHYNE GTMVD NAOQV LRODR CMNHB SBJEI NKXXX Hint 1 (in caesar cipher): SUREDEOH ZRUG: DXVWUDOLDQ Hint 2 (in caesar cipher): SUREDEOH ZRUG: EULWLVK Hint 3 (in caesar cipher): SUREDEOH ZRUG: ZDUVKLSV Hint 4 (in caesar cipher): SUREDEOH ZRUG: IRUFHV Hint 5 (in caesar cipher): SUREDEOH ZRUG: MDSDQHVH Hint 6 (in caesar cipher): QR RYHUODS Hint 7 : WKHUH LV RQOB RQH OXJ IURQW RI WKH ZKHHO WZHQWBILYH Hint 8 : WKHUH DUH IRXU OXJV IURQW RI WKH ZKHHO WZHQWBWKUHH Hint 9 : WKHUH DUH HOHYHQ OXJV IURQW RI WKH ZKHHO WZHQWBRQH 3. Message begins: "JAPANESE AIRCRAFT WERE MAKING ATTACKS ON NORTHERN AUSTRALIA" JCOQQ EYNBW RZNWB DXPFS UGURK JJMLG TTYCD CYGCM LENOB OFDMY WTJMY WOHDJ PVXIB VISHT BBRFY KONJS HSZGU HUORG WFRKE ZISUH QJZTR WEOWE YRMXW HDBZG QXUTZ JQKRI Hint 1 (in caesar cipher): WKH WHAW FRQWLQXH EB "EHJLQQLQJ ZLWK" Hint 2: WKHUH DUH WKLUWHHQ OXJV IURQW RI WKH ZKHHO QLQHWHHQ Hint 3: WKHUH LV RQOB RQH OXJ IURQW RI WKH ZKHHO WZHQWBRQH Hint 4: WKH WHAW HQGV EB "WKH FLWB RI GDUZLQ GRW" Hint 5: WKHUH DUH WZR OXJV IURQW RI WKH ZKHHO WZHQWBWKUHH Hint 6: SUREDEOH ZRUG: "SVBFKRORJLFDOOB" Hint 7: WKHUH DUH WRZ RYHUODSV ZKLFK DIIHFW ZKHHO QLQHWHHQ Hint 8: WKHUH DUH WKLUWHHQ OXJV IURQW RI ZKHHO WZHQWBRQH Hint 9: WKHUH LV RQOB RQH OXJ IURQW RI ZKHHO VHYHQWHHQ 4. Messages enciphered with same initial "wheel settings". No. 1 - PKIJV GNBTZ GFUZC DXROT VEUDK LHRWP CTAGQ WSVLN NBLHC AZBEA WQHGH CPGTA YABFR WRVJE UGSEY QPBLT IIUMX No. 2 - YLPEL CMYOA ABTGV YUZYC BXANA JXJCQ NTQFE MRVTK VNSYN QTXFO EGRAW ZPSHP OPNON DRGIP No. 3 - TUUYD GIQZR HEUNQ PYOFK AKTSO MWCVC GLIQQ YVGTY UQSMS WTPPL RLCZK JXLZS SOSEN CRVRJ TZIYL PJHFL Hint 1 (in caesar cipher): SUREDEOH ZRUG: "JHQHUDO" Hint 2 (in caesar cipher): SUREDEOH ZRUG: "VROGLHUV" Hint 3 (in caesar cipher): WKH VHFRQG PHVVDJH EHJLQV EB "ZKHQ" Hint 4 (in caesar cipher): SUREDEOH ZRUG: "SKLOLSSLQHV" Hint 5 (in caesar cipher): SUREDEOH ZRUG: "VXUUHQGHU" 5. Message begins: "FROM HEADQUARTERS TO MAJOR GENERAL VANDERGRIFT" IRBYH KNZOD MIJXV RJLTQ SZIIS POLGC PNZVU HGOBL MJAAM JHBYS YNTUH NFUAM ZNSFB AYXNS WFWWO RWXED RFUPA BNHMY HNLMH IPORC OJYWQ GEPEE LNVRY HAQYW TXXXX Hint 1 (in caesar cipher): WKH WHAW HQGV EB "WR QHZ CHDODQG VWRS" Hint 2: WKHUH DUH HOHYHQ OXJV IURQW RI WKH ZKHHO WZHQWBRQH Hint 3: DOO RYHUODSV DIIHFW WKH ZKHHO QLQHWHHQ Hint 4: WKHUH LV RQOB RQH OXJ IURQW RI WKH ZKHHO WZHQWBWKUHH Hint 5: SUREDEOH ZRUG: "XQLWHG VWDWHV"