Chapter 3 : Analysis of a two-wheel Hagelin Cipher Machine

Problems

1. Given the key list and message key, decipher the following message:
 
      JSDAE OGVVK GAGTD AHJEB OWKXF BZMVH DXERW VZXXX

   Key List:
     Wheel 19 : Lugs: 5, Pins:  A_CD__G____L_N__Q__
     Wheel 17 : Lugs: 3, Pins:  _B_D__G__J____OP_
   Message Key: GI


2. Given the plain and cipher text, find the Key.

   Cipher: MGLAX MLAWK EAZPW CXWEM VGPEA SCNZZ WDJMP PKKAB
   Plain : OURZF ORCES ZZENG AGEZN EWLYZ LANDE DZTRO OPSZZ

3. The following two messages contain the same plain text,
   but have been enciphered with different message key.
   Read the messages.

     No. 1 - FOXUB WANVA TNAJV LYGUR IGYWG GRJRY MIVZP
     No. 2 - IOORB ZJKYR KNDMB OVGXO IDVCD POAOV MREZM  

4. Read the following message, it begins by the text 
   "THE MARINES". The two wheels used are 21 and 19:

      GADAQ HIWMY HFCHA ONDII ZJXTI 
      GFNNX SDQXD LVDFA DEHJF VJNRP 
      QVPOA

   Hint (in caesar cipher): WKH WKLUG ZRUG LV DVKRUH

5. Read the following message, it begins by the word "THE". 
   Perhaps it ends by several "Z". 
   The two wheels used are 19 and 17:

      KWZAL XAPQJ DVNEJ OMUPZ XKVAF 
      HKFLD PJPIL TJYML JKLJF

6. Read the following message. It contains the word "MORNING"

      VZRVD ATTAN SEJNN KTTOA HWRGC 
      CDVON KNBEK HJFVO TLXPX DHZIP 
      KAIRS NMHXX

7. Read the following message, it begins by the text 
   "THE ADMIRAL":

      GZCFG GSYNG VAGFC BDVDA QSFNY 
      LZWPJ IKWZL GOKUV SXFOA

   First Hint (in caesar cipher): WKHUH DUH WZR RYHUODSV
   Second Hint(in caesar cipher): WKH ODVW ZRUG LV IRUFHV

8. The following two messages have been enciphered with
   the same key. Read the messages.

   No. 1 - TYZMG TEGFG ANDSG ZPYFK ONKVO 
           IGNFO XPEUB WHZTW GJCAV GNIWA 
           LHGBM IAING
   No. 2 - HXEBG DMOUA DSINY GSHAU SYDAY 
           MCGYB ITNBF MDVDA AVSTA NZIAG 
           VFSNK YVNUG

   First Hint (in caesar cipher): RQH PHVVDJH EHJLQV EB WKDW
   Second Hint(in caesar cipher): WKH VHFRQG ZRUG LV QLJKW              
                                  LQ WKH ILUVW PHVVDJH
   Third Hint(in caesar cipher) : RQH PHVVDJH HQGV EB WUDQVSRUWV

9. Read the message : 

     DVDOE BNDYB UQYBF JYADB AXVMW YOMDF

   First hint (in caesar cipher): WKH PHVVDJH EHJLQV EB ZH
   Second hint(in caesar cipher) : WKH PHVVDJH HQGV EB WZR C
   Third hint(in caesar cipher) : WHUH DUH WZR RYHUODSV

10. Read the message:

     HZWBO MRRVS DIBKC IWBNT MVDAU 
     PTVIO SCAPH TXSMT HFVHY TIHHH

   First Hint (in caesar cipher): WKHUH DUH IRXU C DW WKH HQG
   Second Hint(in caesar cipher): WKH PHVVDJH EHJLQV EB WKH

11. The following two messages have been enciphered with
   the same key. Read the messages.

    No. 1 - JTENK LEFPK WVNEK WACCQ PPVHZ 
            LMLHV LMZSO XQHHD QOEKT DHMLX 
            YPSFN ALEVZ YZSDD RPACO
    No. 2 – VTSKW LSFRW YGZEN IYZCS BYJJO 
            CMZHH LAZQX XETED EOHKV SQANL 
            KMDIZ YXHVN YNHAD FPXZO

12. The following two messages have been enciphered with
    the same key. The plaintext of these messages are (almost)
    the same. Read the messages.

    No. 1 - LTZBX ZUAQX WNMAD WIABD PTAPW OTAXX
    No. 2 - FHWWB AVZZN XANHA EVNWE ATOAU RTTWX

    Hint (in caesar cipher): WKH PHVVDJH EHJLQV EB WKH