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numeric cexample; numeric example
Topic Started: Aug 28 2016, 04:29 PM (127 Views)
JOE.TEKK1
Elite member
[ *  *  *  *  * ]
A message example .

URGJL DZQOY BKLHD CDQQJ CPGHX MTEDI JITZD WYGDP PLQDZ

YJEBL STIME EGHSM ETIME GHSME VGLRM TZAXZ

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solution : message is padded at beggining : BUCK DEER

Key is the name of a fish, and that name is encrypted by a simple additive moving the place ( shift) by 0 – 9 places. SWORDFISH = ACSTDMNVI .
Mode of encryption is using a table with a mixed alphabet, with Cipher Feedback ( CFB).

BUCK DEER WE ARE VERY CONCERNED WITH YOUR SECURITY PROCEDURES X

ALL DOORS MUST BE ALARMED X


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