The document outlines the fundamentals of HTTPS, including its definition, working mechanism, and the role of SSL in securing data communications. It explains the difference between HTTP and HTTPS, mentions the concept of cryptography, and discusses the importance of SSL handshaking. Furthermore, it introduces Let's Encrypt, an upcoming certificate authority aimed at providing free TLS certificates, simplifying the process of securing websites.

1. SHIKHER WALIA
THAPAR UNIVERSITY,PATIALA
NOTE :- This is not a Copyright Material. Content has been taken….

2. CONTENTS
 Defination of HTTPS.
 Working of HTTPS.
 Understanding SSL.
 SSL Handshaking.
 Difference between HTTP and HTTPS.
 Lets Encrypt.

5. Defination of HTTPS
 HTTPS stands for Hyper Text Transfer Protocol Secure.
 It is the secure Version of HTTP.
 It is the part of Application Layer Protocol Of TCP/IP Network.
 It uses the port no. 443 for Data Communication.
 It allows the secure transactions by wrapping up the entire communication
within the SSL.
 It provides bidirectional security of Data.

6. Working of HTTPS
 The HTTPS is nothing but is the combination of “ HTTP+SSl “.
 The SSL stands for “ Secure Socket Layer “ which is responsible for securing
the sensitive data over the Internet like when you are doing
Netbanking,Online Payment etc.
 The HTTP Protocol woking with SSl and now called the HTTPS.
 In HTTPS, the SSL takes care over of making sure that the data goes
securely over the Internet.
 To understand the SSL,you must know the concepts of “CRYPTOGRAPHY”
on which the SSL is based.

8. CRYPTOGRAPHY
 The Cryptography is the art or science of hiding the information.
EXAMPLE
HELLO WORLD cryptography @1#$% *&^*!
This is called the CIPHER TEXT
PLAIN TEXT

9. SYMMETRIC KEY
ENCRYPTION
&
DECRYPTION
Uses the same key for encrypting and decrypting
called the “PUBLIC KEY”.

10. Managing HTTPS migration

12. Managing HTTPS migration

13. Managing HTTPS migration

15. ASYMMETRIC KEY
ENCRYPTION
&
DECRYPTION
Uses the different key for encrypting and decrypting called
the “PUBLIC KEY” for Encryption and “PRIVATE KEY” for
Decryption.

18. Secure Socket Layer
HANDSHAKE

31. EXAMPLES OF HTTPS

36.  Let's Encrypt is an upcoming certificate authority to be launched on
November 16, 2015 that will provide free X.509 certificates for Transport
Layer Security encryption (TLS) via an automated process designed to
eliminate the current complex process of manual creation, validation,
signing, installation and renewal of certificates for secure websites

37. Sponsors Of Let’s Encrypt

38. THANK-YOU
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