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Authors:
William Stallings
Chapter:
Classical Encryption Techniques
Exercise:
Problems
Question:9 | ISBN:9781292158587 | Edition: 7

Question

When the PT-109 American patrol boat, under the command of Lieutenant John F. Kennedy, was sunk by a Japanese destroyer, a message was received at an Australian wireless station in Playfair code:

KXJEY UREBE ZWEHE WRYTU HEYFS
KREHE GOYFI WTTTU OLKSY CAJPO
BOTEI ZONTX BYBNT GONEY CUZWR
GDSON SXBOU YWRHE BAAHY USEDQ

The key used was royal new zealand navy. Decrypt the message. Translate TT into tt?

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Answer

Meaning:

PT BOAT ONE OWE NINE LOST IN ACTION IN BLACKETT  

STRAIT TWO MILES SW MERESU COVE X CREW OF TWELVE  

X REQUEST ANY INFORMATION.

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