METHOD, DEVICES AND ARRANGEMENT FOR AUTHENTICATING A CONNECTION USING A PORTABLE DEVICE

摘要

A portable electronic device (311) is used for authenticating a connection between a remote computer and a server system (301). The device (311) receives a challenge from the server system (301), reads (511) from the challenge a piece of challenge data that describes a transaction to be executed at the server system (301) and outputs (513) said challenge data to a user. In generating a response to the challenge there is included response data that describes said transaction to be executed at the server system in the response. The response is digitally signed (601) using said response data and a shared secret that is known to the server system (301) and to the portable electronic device (311).