Encryption and Public Keys

What is the main purpose of encryption?

• To increase data storage

• To speed up internet connections

• To change the color of the text

• To keep data secret by scrambling the message

What was one of the first well-known methods of encryption?

• Morse code

• Caesar's cipher

• Quantum encryption

• Binary code

What is the main problem with Caesar's cipher?

• It's too complex

• It only works in Latin

• It's easily cracked by trying every possible key

• It requires a computer

How many possible key solutions could there be with 10 digit encryption?

• 10 billion

• 10 thousand

• 10 million

• 10

What is the length of keys used in today's secure communications?

• 256 bit

• 64 bit

• 128 bit

• 512 bit

What type of encryption do computers use to exchange data securely over the internet?

• Morse code

• Caesar's cipher

• Asymmetric keys

• Symmetric encryption

What does the 'https' in a browser's address bar signify?

• That the website is using public key encryption

• That the website is unsecured

• That the website is under maintenance

• That the website is for HTTP services only

What is the foundation of all secure messaging on the open internet?

• Binary encryption

• Quantum encryption

• Public key cryptography

• Symmetric encryption

Why will we have to develop new ways to make encryption too hard for computers to break?

• Because encryption methods are becoming simpler

• Because computers are becoming slower

• Because encryption is no longer necessary

• Because computers are becoming faster