The Internet: Encryption & Public Keys (watch vid first)

What is the significance of SSL and TLS in web browsing?

• They allow users to browse anonymously
• They store user passwords securely
• They speed up the loading of web pages
• They protect data during transmission over the internet

What happens when computers become faster regarding encryption?

• New methods of encryption will need to be developed
• All current encryption methods will become obsolete
• Encryption will no longer be necessary
• Encryption will become easier to implement

What is a potential issue with using Caesar’s Cipher?

• It can be easily broken with a limited number of keys
• It requires complex algorithms
• It is very slow to encrypt messages
• It can only encrypt short messages

What is the primary purpose of encryption?

• To hide the original text of a message
• To speed up data transfer
• To reduce file sizes
• To make data publicly accessible

Which cipher is known for substituting letters in a message?

• Caesar’s Cipher
• Vigenère Cipher
• RSA Encryption
• AES Encryption

How many possible keys are there in a 256-bit encryption?

• Trillions of trillions of trillions
• Only 256
• A few hundred
• Less than a thousand

What does the term 'key' refer to in encryption?

• A hardware component for encryption
• A type of computer virus
• A code to access the internet
• A method to unlock encrypted messages

What is symmetric encryption?

• When encryption is done without any algorithm
• When different keys are used for encryption and decryption
• When no keys are used
• When the same key is used for both encryption and decryption

What is asymmetric encryption?

• Using multiple keys for a single message
• Using no keys at all
• Using the same key for both encryption and decryption
• Using a public key for encryption and a private key for decryption

What does the public key allow someone to do?

• Encrypt a message to send securely
• Decrypt a message they received
• Access private data without permission
• Create a new encryption algorithm