Hidden Messages- Level J
The author might have included this first paragraph for which two of the following reasons
1) to grab the readers attention 2) to introduce the topic of the article
What does this excerpt tell you about cryptanalysis
Frequency analysis uses patterns in languages to dicipher encryptions
How did Demaratus send his secret message to the greeks
by carving it on a wooden plank
When the technology became available why did computer encryptions replace manual ones
computers use more complex algorithms and generate cipher text instantly
What is the main idea of this selection
cryptography is a useful process that can protect information security
From how the words crytography and cryptanalysis are used in this selection, you can deduce that their prefix means
secret or hidden
What has caused encryptions to become more and more complex over the years
the need to stay ahead of improved methods of code breaking
Based on this excerpt what is the most amazing aspect of the Caesar Cipher
the principle on which it was based endured for centuries
Why does the author include information on the zimmerman telegram
to demonstrate how vital code breaking could be in changing the course of history
Put these types of ways to send secret messages in the order in which they were used throughout history
1) using physical objects to hide messages 2)employing manual letter substitution 3) analyzing frequency of word use 4) utilizing electronic digital encryption