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What is handshake protocol?

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What is handshake protocol?

In telecommunications, a handshake is an automated process of negotiation between two participants (example “Alice and Bob”) through the exchange of information that establishes the protocols of a communication link at the start of the communication, before full communication begins.

What are the phases of handshake protocol?

Handshake Protocol divided into 4 phases:

  • Establish Security Capabilities.
  • Server Authentication and key Exchange.
  • Client Authentication and key Exchange.
  • Change CipherSpec and Finish.

What is handshake in TLS?

A TLS handshake is the process that kicks off a communication session that uses TLS encryption. During a TLS handshake, the two communicating sides exchange messages to acknowledge each other, verify each other, establish the encryption algorithms they will use, and agree on session keys.

What is the process of handshaking?

In communication, handshaking is the automated process for negotiation of setting up a communication channel between entities. Handshaking occurs before the transfer of data or any other communication and just after the establishment of the physical channel between the two entities.

What is the 4 way handshake?

A four-way handshake is a type of network authentication protocol established by IEEE-802.11i that involves standards set up for the construction and use of wireless local area networks (WLANs). The four-way handshake provides a secure authentication strategy for data delivered through network architectures.

Who should shake hand first?

The person in a higher position of authority or age should be the first one to extend a hand. For example, if you are interviewing for a job, the interviewer should be the one to take the lead. When meeting future in-laws, the father-in-law should start the handshake.

What are the 4 stages of SSL?

4 phases of SSL protocol

  • Overview of 4 Phases of SSL Handshake.
  • Phase-1: Establishing Securing Capabilities.
  • Phase-2: Server Authentication and Key Exchange.
  • Phase-3: Client Authentication and Key Exchange.
  • Phase-4: Finalizing Handshake Protocol.
  • SSL Protocol: Finally SSL Handshake.
  • Reference.

What is SSL protocol and how it works?

Definition. Secure Sockets Layer (SSL) is a protocol for securing communication on the Internet. It provides a way for enterprises to encrypt data before sending it to users, preventing third parties from reading it while it’s in transit.

What are the 3 steps in a TCP handshake?

The TCP handshake TCP uses a three-way handshake to establish a reliable connection. The connection is full duplex, and both sides synchronize (SYN) and acknowledge (ACK) each other. The exchange of these four flags is performed in three steps: SYN, SYN-ACK, ACK, as shown in Figure 5.8.

What layer is TLS?

The TLS protocol aims primarily to provide privacy and data integrity between two or more communicating computer applications. It runs in the application layer of the Internet and is itself composed of two layers: the TLS record and the TLS handshake protocols.

What is the purpose of 3 way handshaking?

A three-way handshake is primarily used to create a TCP socket connection to reliably transmit data between devices. For example, it supports communication between a web browser on the client side and a server every time a user navigates the Internet.

Does WPA2 use 4-way handshake?

The RSNA is used in either a pre-shared key (PSK) or 802.1X SSID, in other words, WPA2-Personal or WPA2-Enterprise. The 4-Way Handshake utilizes an exchange of four EAPOL-Key frames between the client and access point. In a PSK network, the exchange of frames occurs after the Open System Authentication and Association.

What is the purpose of the handshake protocol?

When establishing a secure session, the Handshake Protocol manages the following: 1 Cipher suite negotiation 2 Authentication of the server and optionally, the client 3 Session key information exchange.

What do you need to know about the TLS handshake?

TLS handshake. When a Transport Layer Security (SSL or TLS) connection starts, the record encapsulates a “control” protocol—the handshake messaging protocol (content type 22). This protocol is used to exchange all the information required by both sides for the exchange of the actual application data by TLS.

How is STS used in the handshake protocol?

To avoid unnecessary communication overhead, the second key-exchange message is combined with the first authentication message. As a result, STS entails the establishment of a shared-secret key between two parties, with mutual entity-authentication and mutual implicit key-authentication [38].

What happens in a client hello SSL handshake?

Client hello: The client sends a client hello message with the protocol version, the client random, and a list of cipher suites. Server hello: The server replies with its SSL certificate, its selected cipher suite, and the server random.