ICT g8 - encryption & decryption

There are private data that people still exchange in the open system such as credit card number, bank information, password, and emails.

• true

• false

Scrambling or changing a message to hide the original text it is called...

• encryption

• decryption

the process of uncrambling a message to make the text readable is called...

• encryption

• decryption

One of the first well-known method of encryption was called caesar's cypher.

• false

• true

Caesar's cypher is an algorithm that substitute each letter in the original message with a letter a certain number of steps down the alphabet. The number that only the sender and the receiver know is called...

• key

• letter

• password

Encryption is the way we keep private information safe on the internet.

• TRUE

• FALSE

Caesar's Cipher is a secure way of encrypting data.

• true

• false

 

Today we use ___ bit encryption.

• 26

• 64

• 128

• 256

When the same key is used to encode and decode a message, it’s called...

• symmetric encryption

• Asymmetric encryption

Computers use…

• symmetric encryption

• Asymmetric encryption