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"Purple" aka 97-shiki ōbun inji-ki Mystery Cache

Hidden : 3/13/2012
Difficulty:
3.5 out of 5
Terrain:
1.5 out of 5

Size: Size:   other (other)

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Geocache Description:

The cache is not at the posted coordinates.
The cache is located within 2 miles. The cryptogram below will provide you with the actual cache coordinates.

In the history of cryptography, 97-shiki ōbun inji-ki (九七式欧文印字機) ("System 97 Printing Machine for European Characters") or Angōki Taipu-B (暗号機 タイプB) ("Type B Cipher Machine"), codenamed Purple by the United States, was a diplomatic cryptographic machine used by the Japanese Foreign Office just before and during World War II.

The codename "Purple" referred to binders used by US cryptanalysts for material produced by various systems:

For those interested in these historical Crypto machines, I do have five caches using them. In order of easy to more difficult; "Hagelin" BC-52 Cipher Machine, "Hagelin" M-209 Field Encryption Machine, "ADONIS & POLLUX" TSEC/KL-7 Crypto Machine, "Purple" aka 97-shiki ōbun inji-ki, and Belle Isle Marsh Enigma

Cipher Text:

UXRY OAPD RAXU CBHF DJPL WEST RGLM HGTW KESB YEZV SEFK EDTG GRDK RHAE GDHO HIFQ JFGM ZOBF ARIG LIHD BBPE BFAA YIFF XBBW TFGJ ZGHD OCDG GRKP FLMN SIIG REKZ HIMA KIRN TEUG QDTW LMXZ NAIK BRVI UMBV JFCZ KIVR WZCA ZTDY ZVOK XS

Some Potentially Useful Information:

Sixes: 14

Twenties: 04 17 05

Motion: 213

Alphabet ???

Feel free to send me E-mails with questions concerning this cache.

For additional reading on "Purple" and how it was eventually "cracked", check out http://en.wikipedia.org/wiki/William_F._Friedman

You can validate your puzzle solution with certitude.

Additional Hints (Decrypt)

[CACHE] Uvag rapvcurerq va pelcgbtenz. [ALPHABET] Nycunorg vf abg ragveryl fpenzoyrq. Gurer vf n xrljbeq/xrlanzr, juvpu znl be znl abg or yvzvgrq gb fvk yrggref, sbyybjrq ol erznvavat abezny nycunorg. Vasbezngvba nobhg ubj/jub "penpxrq" vg jvyy or irel hfrshy.

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)