IGNOU MSEI 22 2018 - Handshake Protocol

Question

Handshake Protocol

16 Feb 2018

Answer :

Word Count : 588

Handshaking is the process by which two devices initiate communications. Handshaking begins when one device sends a message to another device indicating that it wants to establish a communications channel. The two devices then send several messages back and forth that enable them to agree on a communications protocol.

Handshake Protocol is responsible for the authentication and key exchange necessary to establish or resume secure sessions. When establishing a secure session, the Handshake Protocol manages the following:

Cipher suite negotiation
Authentication of the server and optionally, the client
Session key information exchange.

Cipher Suite Negotiation

The client and server make contact and choose the cipher suite that will be used throughout their message exchange.

Authentication

In TLS, a server proves its identity to the client. The client might also need to prove its identity to the server. PKI, the use of public/private key pairs, is the basis of this authentication. The exact method used for authentication is determined by the cipher suite negotiated.

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