What is the difference between authentication, authentication or authorization?

All three terms are frequently used in connection with an application. Although they sound similar, they have different meanings. As they are closely linked and are often confused, we explain them in one entry.

What do authentication, authentication and authorization mean in detail?

Data transmission is not always guaranteed. Although it is guaranteed that the messages remain encrypted, the security of the encryption still depends on the protocol used. The encryption has not yet been cracked, but hackers have managed to access user data via other security gaps.

Who offers end-to-end encryption?

This now includes services such as Microsoft Teams, WhatsApp, Zoom, Telegram, etc. It is therefore very relevant for communication tools, as the messages remain encrypted on the way between sender and recipient.


  • Proof of identity
  • In everyday life, for example by presenting an identity card
  • On the Internet often through the combination of password and username


  • Authentication refers to the verification of an identity card
  • In everyday life by checking an identity card for forgery
  • The Internet checks whether the combination between password and user name exists in the system


  • Granting access to privileges
  • In everyday life, for example, access to a company is granted
  • After authorization, you can work on the Internet in a user account

Do I have any contact with this in my professional life?

Yes, these days we come across this topic every day. Be it checking emails or visiting websites. For almost everything the Internet offers, identity is verified and privileges are granted accordingly.

What does this mean for me?

To improve your security, use encrypted connections. Passwords must be complex and unique. Don’t just rely on password and username. Use two-factor authentication wherever you have the option of using a physical hardware device such as the authenticator from REINER SCT.