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

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Presentation on theme: "By: Hassan Waqar.  A PROTOCOL for securely transmitting data via the internet.  NETWORK LAYER application.  Developed by NETSCAPE."— Presentation transcript:

1 By: Hassan Waqar

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

3

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

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

6  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”).

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

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

9  128-bit keys  It allows 340,282,366,920,938,463,463,374,607,431,76 8,211,456 unique encryptions codes.

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

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

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

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

14  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.

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

16

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


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