摘要:
To authenticate a digital medium for a given title, an authentication server selects a number of challenges corresponding to the title from an authentication database, clears an error counter and sends the challenges sequentially to an authentication application in a media reader in which the digital medium is inserted. Upon reception of a response, it is verified if the answer is correct. If this is the case, then the next challenge is sent; otherwise, it is first verified if a correct answer was mandatory and if so, it is deduced that the digital medium is not genuine. If an incorrect may be accepted, then the error counter is incremented and the next challenge is sent. When there are no more challenges to send, it is verified if the error counter is above an acceptable limit. If so, the digital medium is deemed as not genuine. The invention may be used to allow an owner of a digital medium to access further information or content.
摘要:
Methods for associating a first and a second device. Each device broadcasts an identity, the first device stores new identities and counts them. Upon user instruction and if there just one new identity, the first device sends a request for association to the second device that acknowledges this. The second device then sends, upon user instruction, a confirmation to the first device that verifies that the confirmation was sent by the second device and acknowledges this. The method is particularly suitable for use on devices that are unable to display identities of other devices.
摘要:
A method for acquisition of a software application stored on a software application distribution unit and intended to be supplied to a user computer unit is disclosed wherein, the user computer unit communicates an item of identification information identifying the software application to be acquired to an electronic security module connected to the user computer unit. The module generates, using a secret and identification information, an item of user information and transmits it with the identification information to the unit. The unit protects with the user information the software application identified by the identification information and the protected software application is transmitted to the user computer unit. Thus, the software application is protected with an item of information from the electronic security module of the user. The protected software application then has its protection removed on an electronic security unit equipped with an electronic security module.
摘要:
A method and device for device association. A user enters login and password on a first device that searches for reachable devices. The first device asks the reachable devices if they know the login, preferably by sending a salted hash of the login. The devices that know the login respond positively and the first device lists the responding devices. The first device then successively performs Secure Remote Authentication (SRP) with each device on the list until an authentication succeeds or there are no further devices on the list. The SRP authentication makes sure that the first device knows the login and that the other device knows a password verifier without transmitting any knowledge that allows recuperation of this info by an eavesdropper. The authenticated devices then establish a secure channel over which a community secret key is transferred, and the first device also calculates and stores the password verifier.
摘要:
The invention relates to a method of creation of a new communication network by a wireless terminal. The wireless terminal is initially part of an existing centralized network that includes an access point able to control the association of wireless terminals to its network. In the event of disassociation of the terminal from the network, the method makes provision to initiate a procedure for creating a new network including a declaration of the terminal as access point of the new network, where the operating parameters of the new network are such that communications on the new network do not interfere with the existing network.
摘要:
Method for linking a first and a second communication bus through a wireless link, comprising a first portal connected to the first bus and a second portal connected to the second bus, said first and second portal communicating over a wireless connection. The method comprises the steps of: associating the two portals to the wireless network; exchanging, between the two portals of self identification packets of nodes connected to their respective local busses, including the self identification packets of the portals themselves; generating a reset on each bus; carrying out a self identification procedure on each bus, where each portal generates self identification packets for itself and for nodes of the respective remote bus, using the self identification packets received following the association step.
摘要:
Methods for associating a first and a second device. Each device broadcasts an identity, the first device stores new identities and counts them. Upon user instruction and if there just one new identity, the first device sends a request for association to the second device that acknowledges this. The second device then sends, upon user instruction, a confirmation to the first device that verifies that the confirmation was sent by the second device and acknowledges this. The method is particularly suitable for use on devices that are unable to display identities of other devices.
摘要:
Method for connecting an IEEE1394 remote device to a cluster of IEEE1394 devices through a wireless link comprising a first wireless device connected to the cluster and a second wireless device connected to the remote device, wherein the remote device and the first wireless device for a first wired bus and the device cluster and the second wireless device form a second wired bus. The method comprises the steps of, representing the remote device on the cluster through the first wireless device and representing the devices of the cluster to the remote device through the second wireless device, such that the remote device and the devices of the cluster function as if these devices were part of a single IEEE1394 bus.
摘要:
The invention concerns methods for testing a connection either between a central controller of a communication network and a terminal of the network, or between two terminals of the network. In both cases, a terminal sends test pattern data which is to be echoed back by another device over the connection to be tested. In certain circumstances, a terminal may register twice with the central controller, in order to be able to establish the required test connection without disturbing existing connections. The invention also concerns devices for implementing the methods. The invention can be used in a Hiperlan 2 network.