Method for authentication and signature of a user in an application service, using a mobile telephone as a second factor in addition to and independently of a first factor

摘要

The invention relates to a method for the two-factor authentication of a user in an application service running on an application server. The first authentication factor is a PIN authentication code known only by the user and the application service, and the second authentication factor is the mobile communication terminal of the user on which is installed a reliability application obtained from a reliable third party or certified by the same. The reliability application is capable of generating, using the PIN authentication code and a secret key shared only with the reliable third party, a single use authentication code for each authentication of the user in the application service.