5.8 Public Key Infrastrycture

Question 1

What kind of attack can be done on public key encryption ?

Answer 1

MITM: the attacker intercept the victim public key and can replace it with its own key. The attacker to receive, read and modify messages by decrypting and re encrypting it using its own key

Question 2

What is a PKI ?

Answer 2

Set of technology that make up a framework of encryption to protect and authenticate digital communication. It uses cryptographic public key that are connect to digital certificate which authenticate the device or user sending the digital communication

Question 3

What is a certificate authority?

Answer 3

It’s a trusted entity that issues SSL certificate. These digital certificate are used to cryptographically link an entity with a public key