OFFSET
1,1
REFERENCES
Dan Brown, Digital Fortress, ISBN 0-312-33516-4, EAN 978-0312-33516-8
LINKS
Wikipedia, Digital Fortress.
EXAMPLE
The code is decrypted by looking at the first letter of the chapter for each number, resulting in WECGEWHYAAIORTNU. Decryption is performed using a columnar transposition cipher, termed a "Caesar Square" cipher in the book (this is unrelated to the Caesar cipher). The letters are arranged into a square:
WECG
EWHY
AAIO
RTNU
and read from the top down.
WEAREWATCHINGYOU
Add spaces and you get the plaintext, "We are watching you" a reference to the NSA's monitoring systems.
CROSSREFS
KEYWORD
fini,full,nonn,word
AUTHOR
Rob Golsteijn (Rob.Golsteijn(AT)hotmail.com), Jul 25 2006
STATUS
approved