Encryption

• Computing
• Lower Secondary (Key Stage 3)

Security/Encryption

Encryption

Recap

We will use a 3,2,1 Focus Faces teacher command, to ensure we are all focused on the learning at the front of the classroom.

We also DO NOT close LessonUP but we split our windows so we can see our tasks while we work independently.

By the end of this lesson, you will be able to decrypt secret messages using a Caesar Cipher.

What is physical security?

Actual physical barriers such as locks, fences and cameras.

Types of security

• Key locks
• Card locks
• Cameras
• 2FA
• Biometrics
• Encryption

What is biometrics?

Human security features such as facial scans or fingerprint scans and voice recognition.

Have you ever used biometrics?

1. yes
2. no

What do you think is more secure passwords or biometrics and why?

What is an advantage and disadvantage of physical locks and passwords?

What is encryption?

Encryption means data that is scrambled. The only way to unscramble this data is with a decryption key.​

​

This secures data when being transferred over the internet or network. It also limits the effectiveness of interception attacks.

What shift did Caesar use with his
generals?​

Why did Caesar create the code?​

You do - Independent task

There are 4 clues relating to the Science theft, you will decipher these codes using a Caesar cipher wheel, the worksheet is in the Computer Science shared drive.

computerscienced.co.uk