2.3 Encryption

-an algorithm is used to scramble data
-making the data unreadable during transmission

Plain Text

Cyphertext

Symmetric encryption: (4 points)

Data is encrypted and decrypted using the same key/algorithm
Encryption algorithm is used
Data before encryption is known as plain text
Data after encryption used is known as cypher text
Key is sent to receiver(to allow data to be decrypted

Asymmetric encryption (up to 4 points)

Asymmetric encryption was developed to overcome the security problems associated with symmetric encryption
Uses a public key and a private key
Public key is available to everyone
Private key only known by the computer user
Both keys are needed to encrypt and decrypt data