ENCRYPTION
ENCRYPTION
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ENCRYPTION AND CODE BREAKING
ENCRYPTION AND CODE BREAKING
People have used secret codes for thousands of years, especially during wars, to keep messages safe so the enemy couldn’t understand them if they were caught.
The art of writing or solving codes is known as CRYPTOGRAPHY.
Many different codes and ciphers have been created to try and stop people accessing information that they shouldn't.
Nowadays we also need to protect data travelling across the Internet.
When we shop or bank online we send out personal log in details, plus financial details across the internet.
Imagine if this was stolen by a hacker!
Encryption is scrambling data to make sure that even if a hacker does steal our details, they cannot read it, because they don't know the key.
THE CAESAR CIPHER
THE CAESAR CIPHER
One of the earliest methods of cryptography is known as the Caesar cipher.
In this method, the alphabet is written out twice. The second time it is shifted. The number of letters it is shifted by is known as the key.
Caesar Cipher challenges - snip and paste to your PowerPoint
Caesar Cipher challenges - snip and paste to your PowerPoint
EXTENSION
EXTENSION
Write a secret message to a friend. Swap it with them and decrypt each others.
Write a secret message to a friend. Swap it with them and decrypt each others.
Vortex decryption challenge
Vortex decryption challenge
Find VORTEX in the Computer Science folder on the Desktop.
Navigate to the control chair by heading down the manhole!
Start with the Desert Oasis challenge.
Code breaking key words
Code breaking key words
TRACK THE HACKERS!
TRACK THE HACKERS!
Can you use your problem-solving skills to track all the hackers and find the location of the criminal mastermind behind the gang?!
You may use Google to help you!
Click on the image on the right to start.
Remember to READ INSTRUCTIONS CAREFULLY!
THE LIFE AND WORK OF ALAN TURING
THE LIFE AND WORK OF ALAN TURING
HOW IS ENCRYPTION USED TODAY?
HOW IS ENCRYPTION USED TODAY?
Today encryption is widely used to protect information as it travels across the Internet.
For example, the messages that you send using WhatsApp or your username and password that you use to log in to an online account.
You can think about encryption as a way of restricting access to data.
When data has been encrypted, it can be read only by those who know how to decrypt the data.
KNOWLEDGE CHECK
KNOWLEDGE CHECK
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