PROTECTED ELECTRONIC UNIT FOR SANCTIONING TRANSACTION

摘要

1. A secure electronic unit (100) comprising a communication interface (105), characterized in that it comprises means which, when establishing communication via said communication interface (105) between the secure electronic unit and a mobile electronic device (200), comprising means for connecting to telecommunications network (300), configured to: authenticate a remote server (310) verify transactions in a telecommunications network (300) and authenticate with a specified remote server (310), establish a secure connection (1000) via telecom communication network with the specified remote server (310), receive (E18) through the specified communication interface (105) data related to the proposed transaction (2000) with the third device (400), and transfer (E19) data through a secure connection (1000) to remote server (310) for their analysis in order to decide on the possibility of authorizing a transaction. 2. A secure electronic unit according to claim 1, characterized in that it is configured to authenticate the server (310) in the telecommunications network (300), transmit (E9) through the specified communication interface (105) of the first exchange authentication element encrypted with a secret key a secure electronic unit (100), receiving (E11) from said server (310) for verifying the second exchange authentication element associated with the verification server, and performing a comparison between the first and second exchange authentication elements. 3. The secure electronic unit according to claim 1 or 2, characterized in that it is configured to authenticate at the specified remote server, transmit (E9) the authentication parameter encrypted using the secret key via the specified communication interface (105)