System and method for securing communications between a card reader device and a remote server

摘要

The present invention concerns the implementation of end-to-end security for the communication between a low cost card reader and the remote server. The purpose of the present invention is the establishment of a secure channel between the card reader and the remote server through an un-trusted communication device (e.g. a smart phone or a tablet) that is intrinsically resistant to some basic differential side-channel analysis in a context where there is no secure random number generator and no source of entropy in the card reader, while providing the following characteristics:- Mutual authentication between the card reader and the server- Secure channel based on session keys such that the keys of the secure channel related to a past transaction cannot be re-played, or the session keys of a future transaction cannot be pre-computed by the card reader and later re-use by the card reader in a legitimate transaction.