A FIRST ENTITY, A SECOND ENTITY, AN INTERMEDIATE NODE, METHODS FOR SETTING UP A SECURE SESSION BETWEEN A FIRST AND SECOND ENTITY, AND COMPUTER PROGRAM PRODUCTS

摘要

The invention relates to a method for setting up a secure session between a first entity and a second entity. In an embodiment, the first entity is a user authentication device and the second entity is an application running on a platform. The method comprises generating a first random number. A user enters a first string, derived from said first number, into the second entity. Further, the method includes applying a one-way function to the first string or to a derivative thereof, obtaining an encoded string. The method also comprises transmitting the encoded string to an intermediate node that is in connection to the first entity and the second entity. Further, the method comprises the step of sharing a second random number with the second entity. The method also comprises a step of deriving a secret key from the first and the second string.