Hi,

As mentioned, here is my approach towards the full anonymization project.

• Introduce a new model EmailMapper with attributes
  • ForeginKey to Address / User
  • seed, A 40 bit hash,unique
  • nuses, number of times this hash is used,max 5 or 10
• The approach is to encrypt the seed nuses times, with encryption algorithms like AES, each time the email ID is displayed.
• The email ID is displayed as <nuses><encrypted seed>
• The email is decrypted nuses times to find the parent seed and thereby point to the exact email address.
• A new seed should be generated for the user after a fixed number of attempts,say 5 or 10,as the repeated encryption routines can slow down the system.

The outcomes

• Everytime the user sends a message,his from address changes.
• At the same time, each of the from addresses point to the same user.
• The sender can use any stored address he has,like in the mail contacts,repeatedly, to contact with a user,as it has nuses attached with it.

If this approach seems viable or if I am missing something important,please let me know.If this is fine, I would build an app that can demonstrate this functionality, before building my application.

*Regards,Rajeev S* *Government Engineering College,Thrissur* *http://rajeevs.tk <http://rajeevs.tk>*