Unit 2.3 - Encryption Flashcards
1
Q
why do we use encryption?
A
-minimises risk of being intercepted
-unreadable to whoever intercepts data
2
Q
plaintext?
A
original data being sent
3
Q
ciphertext?
A
plaintext after it has gone through an encryption algorithm
4
Q
symmetric encryption
A
uses the same encryption key to encrypt and decrypt the encoded message
5
Q
asymmetric encryption
A
uses public and private key
6
Q
public key
A
available to everybody (encrypts)
7
Q
private key
A
only the computer user knows (decrypts)
8
Q
how does asymmetric encryption work?
A
1) Matching keys are made
2) A sends their public key to B
3) B uses A’s public key to encrypt document being sent
4) B sends encrypted document to A
5) A uses private key to decrypt the document
