Introduction to cryptography

Monday, 20 May 2002, 5:02 PM EST

The origin of cryptography probably goes back to the very beginning of human existence, as people tried to learn how to communicate. They consequently had to find means to guarantee secrecy as part of their communications. However, the first deliberate use of technical methods to encipher messages may be attributed to the ancient Greeks, around 6 years BC: a stick, named "scytale" was used. The sender would roll a strip of paper around the stick and write his message longitudinally on it. Then, he'd unfold the paper and send it over to the addressee. Decrypting the message without knowledge of the stick's width - acting here as a secret key - was meant to be impossible. Later, Roman armies used Caesar's cipher code to communicate (a three letter alphabet shift).

[ Read more ]




Spotlight

The synergy of hackers and tools at the Black Hat Arsenal

Posted on 27 August 2014.  |  Tucked away from the glamour of the vendor booths and the large presentation rooms filled with rockstar sessions, was the Arsenal - a place where developers were able to present their security tools and grow their community.


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  

DON'T
MISS

Fri, Aug 29th
    COPYRIGHT 1998-2014 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //