Editing New threat models on authentication (section)

==Using quantum networks to address new threat models==
This situation could benefit from the power of quantum networks. The challenge is to create a system to manage identity credentials that cannot be cloned, forged and can be revoked instantaneously by a central authority.  Quantum money protocols seem to offer the desired properties. The various proposals for quantum money protocols are all based on the idea of producing unforgeable tokens. The security of these construction is derived from the unclonability of quantum states, a physical property that ensures the security of many quantum tasks. Moreover, quantum tokens are, like standard money, issued by a central authority which can revoke them easily. One difference, however, is that when quantum tokens are consumed, they are not available anymore while authentication may be performed several times.

Mobile devices are also used for a lot of transactions that require authentication, such as payment. The main issue here is that the devices are not trusted and the mobile manufacturer may not be willing to collaborate with security companies.

Quantum protocols may also offer solutions to these problems. In particular, Quantum Digital Signatures could be helpful to get long-term security. More advanced concepts, such as Quantum Physically Unclonable Functions are also investigated as potential solutions to identification problems.

Quantum networks will offer new solutions to various challenges related to authentication. Known protocols can be used to develop more secure solutions thanks to the unclonability and unforgeability of quantum tokens, as well as the long-term security that naturally follows from the use of quantum resources.