Introduction to Encryption

What does Encryption mean?

• To take a message and make it so no-one can read it

• To take a message and work out what it means

• To take a message and hide its meaning with a code that only certain people know

• To take a message and write it backwards

What is a cipher?

• The key to encrypt and decrypt a message.

• The name of the text once it has been encrypted.

• The name of the text once it has been decrypted.

• The name of the method of encryption.

Which is the correct order?

• Encryption > Plain Text > Cipher Text > Plain Text > Decryption

• Plain Text > Encryption > Cipher Text > Decryption > Plain Text

• Cipher Text > Plain Text > Encryption > Decryption > Plain Text

• Plain Text > Cipher Text > Encryption > Decryption > Plain Text

Who invented the Caesar Cipher?

• Billy Caesar

• Jules Caesar

• Julius Caesar

• Barry Caesar

What does the little padlock next to a web address mean?

• The site is locked and no-one can use it.

• The site requires a password to access it.

• The site is using encryption methods to protect data sent and received.

• The site is dangerous and shouldn't be trusted.

Encryption is important online as it protects s_____________ data/information.