Monday 28 October 2019

What is SSL (Secure Socket Layer) explain with Structure in Cyber Security

What is SSL (Secure Socket Layer):

It was developed by Netscape Navigator.
It is a certificate based protocol.
It used for managing secure data transmission over internet.
It also known as TLS (Transport Layer Security)

Objective of SSL:


                        I.            Authentication of client and server to each other.
                        II.            Data integrity
         III.            Data privacy and reliability

Location of SSL:
SSL exist in between the Application & TCP Layer.


Layer Vs Protocol:

SMTP: used for sending mail
FTP: used to transmit bulk data
TCP: connection oriented protocol establishes reliable connection.
         UDP: Non reliable connection

SSL Architecture:

structure of SSL

SSL Protocol Structure:

SSL Handshake Protocol:

It provides Authentication and validation of certificate from client to server each other.

SSL Cipher Protocol:

Conversion of original data into cipher text data.

SSL Alert Protocol:

Responsible for generating the error message
for example:
Unexpected error, decompression error, decryption and no certificate error, bad certificate error

 SSL Record Protocol:

Used for maintain following things –

Data Encryption: all the data must be encrypted before the transmission.

Application Protocol: It responsible for data transmission over internet.

Data integrity: during session data cannot be modified by any user

Internet Protocol:

it is responsible for IP Addressing which is found the logical address of source to destination. And Routing which is rout that follow to reach, static routing and dynamic routing these two method are used.

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