1d
This Unbreakable CIA Cipher Fooled the World for 37 Years. Then Two People Accidentally Solved It.
A single leaked hint exposed the CIA’s most puzzling code. But dozens of the world’s toughest ciphers are still waiting to be ...
IFLScience on MSN
Sleuths Uncover Hidden Message In CIA’s Mysterious Kryptos Sculpture After 35 Years
F or nearly 35 years, a hidden message has lurked in plain sight on a sculpture outside the cafeteria of the CIA’s ...
1. Introduction -- 2. From Julius Caesar to simple substitution -- 3. Polyalphabetic systems -- 4. Jigsaw ciphers -- 5. Two-letter ciphers -- 6. Codes -- 7. Ciphers for spies -- 8. Producing random ...
Ricky McCormick’s death in a Missouri cornfield in 1999 might have faded into obscurity — if not for the coded notes found in his pocket that the FBI still can’t crack. The 41-year-old’s remains ...
The history of codes and ciphers in the United States during World War I / edited by Wayne G. Barker
"This book is a continuation of The history of codes and ciphers in the United States prior to World War I ... and is essentially volume 2 of Historical background of the Signal Security Agency, ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback