Abstract- A graphical password is an authentication system that works by having the user to select from images, in a specific order, presented in a graphical user interface. Computer security largely depends on the passwords to authenticate the users from the attackers. Generally, the computer authentication method that is used is alphanumerical usernames and passwords. However, this method has some significant drawbacks. To address these kinds of problems, some researchers have developed the authentication methods that use pictures as passwords. In this project, we conduct a comprehensive survey of the existing graphical password techniques and provide a possible theory and the domain is Block chain and Cyber security. The algorithm that is used in this project is Persuasive cued click points (PCCP) With Improved Advanced Encryption Standard (IAES). The PCCP and IAES features are implemented together for the graphical password authentication system. Graphical passwords have been proposed as an alternative to the text-based schemes, by the fact that humans can remember pictures better than text since pictures are generally easier to be remembered or recognized than text.

| DOI: 10.17148/IJIREEICE.2022.10617