Chapter 2: Analysis of a Single-Wheel Hagelin Cipher machine


1. Given the key : 0 9 0 9 0 0 0 9 9 0 9 9 9 0 0 9 9
   encipher the following message:
       US z PLANES z DAMAGED z TWO z SHIPS zzz
   
2. Given the plaintext and ciphertext, recover the key.
       Plain :  Fierce z fighting z marked z the z action zz
       Cipher:  URCPX VHBYT SNRTT AUZIP VDHGS CHGXG YLTAA

3. Given the ciphertext and key, find the plaintext.
       Lugs: 3
       Pins: 0 X X 0 X X X 0 X 0 X 0 0 0 X X 0 (Wheel 17)
       Message Key: L

       Cipher:  BCJGR VKADV LYAUO ITVJD UYIOX RLIKO BDDAD


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

       No. 1 - YXXRW WUARZ DTQTJ ULVZY AYJNE LHRZS
       No. 2 - YXQRW DNAYS KMXMQ ULVZR AYQGE SAYSZ


5. The following messages have been enciphered using the same
   keying sequence. Read the messages.

       No. 1 - PSVAH IWEAF IBJDZ IJMIQ AWVXX IRVFJ
       No. 2 - UFIAO ECIOJ HZPGO VJAQJ MLDAU NEIJJ

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

6. Read the following message, it begins by the word "FIRST":
       UXIHM GXLOK HGCBA VMWBW AMYVA BZHMB OSAHV DGLOG

7. Read the following message, it is completed by letter Z to
   obtain groups of 5 letters:
       DVLFW IXVHL DCHLD ZMACX GWLGM VNMLF WCDLO GHLLA

8. Read the following message:
       VYAJF LPVZA GSYDW FPALP DGVVD YMYNB AKORW UVIDD
   Hint (in caesar cipher): WKH ODVW OHWWHU LV C

9. Read the following message, it contains the word "CORPS":
       GFVNG DLNXY VXHAZ IINZL TAEMN WRIIX TNKLM GZKTN
   Hint (in caesar cipher): WKH FRUSV EHJLQV DW WKH KHLJKWK SRVLWLRQ  

10. Read the following message:
       ULIMG SHMGR IHSMS RNVAZ ZVIDJ 
       LMAGU XXKHA UZJVW MCLKZ MHTHA 
       HLOWD VITXX
    Hint (in caesar cipher): WKHUH DUH WZHOYH OXJV

11. The following two messages contain the same plain text,
    but have been enciphered with different wheel setting.
    Read the messages.
      
       No. 1 - GSVAO GGUUA KVICA CLGXF GGVWA
       No. 2 - GZVHH GZBUA KVPCH VEGXF ZGCWH

12. Read the following message:
       NNQBQ OVQIM OCKIL TGSCL ONPCO MVUTZ LHFXX
    Hint (in caesar cipher): WKHUH DUH WKUHH OXJV