Hidden Messages- Level J

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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


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