hi everyone in this lecture we will see what is encryption and what is the difference between authentication and authorization encryption is nothing but encrypting the data which can be only understood by authorized parties so what is encrypting the data which is nothing but simply converting the plane takes data into ciphertext are you know using some encoding and now we will see what is authentication so authentication is how one proves that they are who they say which means so I am trying to login to my gmail account they there I will provide my email address so which means and claiming that that is my email address so how can you know Gmail trust me so I have to provide my valid password so that it will compel my current password with you know their database and if it matches then it will authenticate and the next one is authorization so authorization is related to the permissions so authorization always comes next to the authentication it is a step determines what a user can do I mean what are the permissions he he has so this is the difference between authentication and authorization for authorization we can take an example of a root user in Linux box or Linux virtual machine so a root user can create any files modify any files he can visit any you know directories but a normal user may not have all the permissions so this is the you know a basic overview of in encryption authentication and authorization so here you know I listed a scenario that is nothing but a booking a flight ticket so here we are using all encryption authentication authorization you can pass the video and go through you know these data then you will have an ID on you know what is encryption authentication and authorization and how it will be useful for us so if you have any questions you can you know you can ping me anytime thank you guys

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