Home > slashdot > Convicted Terrorist Relied On Single-Letter Cipher

Convicted Terrorist Relied On Single-Letter Cipher

April 1st, 2011 04:23 admin Leave a comment Go to comments


Hugh Pickens writes “The Register reports that the majority of the communications between convicted terrorist Rajib Karim and Bangladeshi Islamic activists were encrypted with a system which used Excel transposition tables which they invented themselves. It used a single-letter substitution cipher invented by the ancient Greeks that had been used and described by Julius Caesar in 55BC. Despite urging by the Yemen-based al Qaida leader Anwar Al Anlaki, Karim rejected the use of a sophisticated code program called ‘Mujhaddin Secrets’ which implements all the AES candidate cyphers, ‘because “kaffirs,” or non-believers, know about it so it must be less secure.’”

Source: Convicted Terrorist Relied On Single-Letter Cipher

Related Articles:

  1. Second 3G GSM Cipher Cracked
  2. Cryptographers Break Commonly Used RC4 Cipher
  3. Senator Wants ‘Terrorist’ Label On Blogs
  4. Microsoft Dynamics GP “Encrypted” Using Caesar Cipher
  5. First Silicon Valley Internet Company Joins The Wall Street Single Letter Club
blog comments powered by Disqus