How does public key cryptography provide protection for netw

How does public key cryptography provide protection for network data and what are the major elements that enable it to provide this capability?

public key cryptography provide protection for network data in following ways:

Following elements help to provide above said capabilities:

1.Digital cerificates : identities issued by trusted third parties and used for authentication of users

2. public and private key: they are used for encryption and decryptio of information therby keeping confidentiality of data.

3.Secure socket layer(ssl): an internet standard secure protocol that adds to security .

4. Certificate authoority(ca ): It issues certificates

Certificate contains following data:

1.Along with an entity’s or individual’s public key,

2.digital certificates contain information about the algorithm used to create the signature,

3.person of the CA that verified the subject data and issued the certificate,

4.the purpose of the public key encryption, signature and certificate signing

5.date range during which the certificate can be considered valid