Register, Login and Delete Account

Registration

1. Required input fields:

   • Email
   • Username
   • Password

2. Registration process:

   We validate the email field to be globally unique.

   We one-way-hashed the password on the client side before sending it out, and store the hashed value in our database instead of transmitting and storing plain text of the password.

   • Success → Navigate to login window
   • Failure → Display error message

Login

1. Required input fields:
   • Email
   • Password
2. Authentication process:
   • Success → Navigate to messaging window
   • Failure → Display error message

Delete Account

1. Required input fields:
   • Email
   • Password
2. Authentication process:
   • Success → Display success message
   • Failure → Display error message

Effects:

• Deletes user account
• Delete all associated messages (both sent and received)
• When other user’s chat list got refreshed, the chat with the user and the messages are gone.

Messaging Interface