Python & Ciphers
- Created by: WarrenB01
- Created on: 17-10-19 11:00
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- Yr 9 Computer Science
- Ciphers
- Substitution
- Julius Caesar
- He used a Substitution Cipher to encrypt codes known as the Caesar Cipher
- is a method of encrypting by which units of plaintext are replaced with cipher text
- Key: It is used to show you how many times to move the letters
- Julius Caesar
- Transposition
- It is a method of encryption in which the positions held by units of plaintext are shifted according to a regular system
- Plain text is text that has not been encrypted
- Cipher text is encrypted text
- Cryptoanalysis is deciphering messages with no key
- Substitution
- Pyhton
- Data Types
- Integers- Whole numbers
- String- The bit that appears on the screen
- Boolean- A variable that is only true or false
- Real/FLoat- A number with a decimal
- Variables- A storage area in the memory of a computer given a label. The contents of the variable can be changed throughout.
- Print- A command the computer to display the text
- input()- Creates a variable
- """- When surrounding text it makes the computer unable to read it
- if, elif, else- A list of things the user can input
- Loops
- For
- Continues a task until it reaches a set limit
- while
- Repeatedly executes a target statement according to a boolean
- For
- Data Types
- Ciphers
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