SECURE SOCKET LAYER(SSL)

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What Is SSL?


Secure Socket Layer(SSL) is a security protocol which is used to provide data security on network.
SSL provides a secure channel between two machines(ie,between client and server)
The data is encrypted between client and server, but the data at that end writes is exactly what the other end reads.

Why Security is needed

To maintain Confidentiality i.e. secrecy

To maintain Integrity of Data

To Authenticate i.e. to prevent unauthorised access


Security Achieved by the Secure Sockets Layer (SSL)


Confidentiality
Encrypt data being sent between client and server, so that passive wiretappers cannot read sensitive data.( ie,data is kept secret)

Message Integrity
This is the second primary goal. Here we want to be sure that the message we receive is one that the sender sent.


Security Achieved by the Secure Sockets Layer (SSL)


End-Point Authentication
With out end point authentication it is difficult to provide either Confidentiality or Message intigrity. Servers are usually authenticated, and clients may be authenticated if requested by servers.

For above security threats,we use cryptography