By: Hassan Waqar.  A PROTOCOL for securely transmitting data via the internet.  NETWORK LAYER application.  Developed by NETSCAPE.

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Presentation transcript:

By: Hassan Waqar

 A PROTOCOL for securely transmitting data via the internet.  NETWORK LAYER application.  Developed by NETSCAPE.

When a web browser accesses a site secured by an SSL certificate, the following events happen: “SSL Handshake”

 Browser (client) asks the server (website) for its identity.  Server provides its SSL Certificate.  Browser examines validity of the certificate.

 If trusted, the browser sends confirmation to server.  The web server replies with a digitally-signed message that starts SSL-encrypted exchange of information (“session”).

 Uses PUBLIC KEY and PRIVATE KEY to encrypt data.  Server sends the public key.  Browser (client) checks to ensure it trusts the server.

 The private key is used to encrypt information passed to the browser, which can then be decrypted with the public key.

 128-bit keys  It allows 340,282,366,920,938,463,463,374,607,431,76 8,211,456 unique encryptions codes.

1. Authentication between client and server: cryptographic techniques. 2. Ensuring data integrity. 3. Securing data privacy.

1. Domain Validation (DV)  For the domain to approve the CSR.  Validate domain owner and what they intend to use the domain for.

2. Organization Validation (OV)  “high assurance” certificates  ensures the identity of the domain owner  aids in identifying potential “phishing” activities.

3. Extended Validation (EV)  display the green URL bar  promise users the safest possible experience  checks the identity and confirms the authenticity.

 Admin issues a Certificate Signing Request.  CA validates information and issues SSL Certificate  Admin installs certificate on the server.  Expires within 1 to 3 years.

 SSL has more recently known as Transport Layer Security (TLS).

 ure_socket_layer.html ure_socket_layer.html  Layer Layer  