Summary and Reflection
In this week's lecture we learnt about secret codes. Lesson One The First Secret Codes?' interested me the most. In this lesson we learned about some examples of different kinds of secret codes and how Mary, Qeen of Scots, tricked others by using her own secret code. Dating back to the 1900BC the first secret code was used in Egypt. However secret codes in history, mentioned in the lesson included transposition ciphers, block ciphers, substitution ciphers and, book ciphers. Out of these secret codes I think transposition ciphers was the easiest to be broken, because the alphabet was moved along by a certain number. As the alphabet has only 26 letters, and there could only be a number of possibilities before you crack the code.
Outside Reading
This is a book review of the Code Book: How to Make It, Break It, Hack It, or Crack It. It seems like a interesting book to read. This book includes how codes were broken in history especially about the codes about Julius Caesar to the 10th-century Arabs; from Mary Queen of Scots to "Alice and Bob"; from the Germans' Enigma machine to the Navajo code talkers in World War II. The books explains how each person used the codes to transfer messages and how the codes were broken. Maybe if you bought this book you might be able to write secret codes to your girlfriend or even write secret codes to cheat in tests. Hahaha
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