COMPUTER NETWORKING

NETWORK SECURITY

DIGITAL SIGNATURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Where are the public keys of communicating parties kept?
A
Privately
B
Exchanged prior to data exchanged
C
Certificate authority
D
In a written note that is send via email
Explanation: 

Detailed explanation-1: -Public key pertaining to the user client is stored in digital certificates by The Certification Authority (CA) along with other relevant information such as client information, expiration date, usage, issuer etc. CA digitally signs this entire information and includes digital signature in the certificate.

Detailed explanation-2: -A public key can be given to any person with whom an individual wants to communicate, whereas a private key belongs to the individual it was created for and isn’t shared. The public key is typically stored on a public key infrastructure server and is used to encrypt data securely before it is sent over the internet.

Detailed explanation-3: -A public key certificate can be thought of as the digital equivalent of a passport. It is issued by a trusted organization and provides identification for the bearer. A trusted organization that issues public key certificates is known as a Certificate Authority (CA).

Detailed explanation-4: -A digital document issued and digitally signed by the private key of a certification authority that binds an identifier to a cardholder through a public key. The certificate indicates that the cardholder identified in the certificate has sole control and access to the private key.

There is 1 question to complete.