the process of applying an encryption algorithm to plaintext to produce ciphertext that cannot be understood (without decryption)

the process of converting encrypted data (cipher text) back into its original, readable format called plain text

Turing's mug cryptography challenge

Computing

Representing information

Representing characters

Binary digits

Numbers in binary

Measurements of data

In this unit pupils will be introduced to binary digits and how they can be used to represent text and numbers. Pupils will perform conversions between binary and decimal numbers and how binary can be used to represent characters. They will explore how cryptography can be used to protect data.

Data representation: text and numbers

Who played a key role in breaking the German codes during WWII?

Once encrypted, a message can never be decrypted.

Encryption and decryption can happen many times.

Which of these is a true statement about encryption?

What is the name for the process of converting plain text into cipher text?

the process of making data readable again

sending a coded message through a messaging app

Which of these is an example of using encryption in everyday life?

Place these steps in order for sending an encrypted message:

Which of these is the largest unit of digital information?

What does the prefix ‘kilo-’ mean in kilobyte?

Which of the following is NOT a type of digital data?

What is the decimal value of the binary number 11100?

Starter Quiz

Which of these is the largest unit of digital information?