A top secret science projectPlain: HELLO Cipher: EBIIL In order to decode your message, you need to share the “key” (the number 3) with your friend. After that you can send messages that are ...

The Code and Cipher Compilation Subsection established secure communications for 40-plus military attachés and hundreds of intelligence officers in the American Expeditionary Forces.

Until now, a 250-year-old encoded text titled the Copiale Cipher baffled cryptographers and historians with bizarre symbols and seemingly random letters. Computer scientist Kevin Knight and two ...

For more than 200 years, buried deep within Thomas Jefferson's correspondence and papers, there lay a mysterious cipher -- a coded message that appears to have remained unsolved. Until now. The ...