Indicate the advantages and disadvantages of using public ke

Indicate the advantages and disadvantages of using public key certificates. Find three commercial systems where certificates are used to perform authentication. Give References.

Solution

Public key means to give an authentication with secure shell where user need to give stronger identity. In order to give this type of authentication an entity must include both public and private key for the authentication process. Any malicious user has to get private key in order have attack on the entity in first phase. Since private keys are mostly stored in the hardware cryptographic device in smart card. So for the intruder or malicious user it’s is difficult for them to breach the login credentials. Some advantages and disadvantages can be stated as under:

Advantages :- as stated above it is more strongly secure than passwords since malicious person should get both keys. On giving public keys certificates authentication, it helps good identity checking with the help of private keys.

Disadvantages:- in this scenario private keys needs to get protected in order to achieve protection, major disadvantage is that it is not more scalable in the large areas.