Secure and anonymous TTP-based Electronic Payment Systems and making anonymity and security via multi-user interfaces and passwords

Nowadays, Electronic Payment Systems are inseparable part of digitally communication systems. One of the crucial challenges of Electronic Payment System makers is making security and anonymity. Digital information while transferring through the network or in storage systems and servers can easily be copied. Moreover, electronic money which is a good simulation of cash money should have the most characteristic of it, that is, payer´s anonymity. Controlled anonymity provides a balance between the protection of privacy and the security against anonymity misuse. A new system for revocable anonymous is therefore designed in this paper. This system presents solution to confront with attacks like blackmailing and double spending by MultiInterfaces and Passwords.