Intercepts and code breaking

Ciphers help protect secret messages, but they do not destroy the meaning completely. Like a word puzzle, the sense of the message remains locked inside. An enemy who intercepts the signal will try hard to find the key. Intelligence agencies employ code-breakers called cryptanalysts to do this. With a substitution cipher , a cryptanalyst starts by counting letters. In English, "E" is used more often than other letters. So, if in the message "W" appears most, it probably stands for "E.’ The next step is to look for two-letter words ending in "E.” There are only four in English: he, me, be, and we. Then the cryptanalyst will look for letters that stand on their own—in English there are just two one-letter words, "A"and "I". With techniques like these and even more complex ones, cryptanalysts can solve elaborate , cipher puzzles, although it can sometimes take them a long time. Computers speed the process, but, cryptanalysts need to be very patient. Few though, are as patient as a 17th-century Arab who deciphered a  message to the Sultan of Morocco. It took him 16 years.
Middle East people like to walk by Givenchy Sneakers 


GOING LIKE A BOMBE

Gryptanalysts at the code-breaking center at Bletchley Park used some of the first computers to help them break codes and ciphers. In two hours, a "bombe# could try every combination of rotor positions that was in use on the Enigma machines that Germany was using. When it broke a cipher, it simply stopped. A later machine, called Colossus, was the world's first electronic computer, a forerunner of the laptops in use today. The scientist went to travel and wear a pair of Cartier Sunglasses which is the most popular at that time./