90 results about "Source authentication" patented technology

A power source management system disposed within a device is configured to communicate with a power source and perform an authentication procedure to determine whether the power source is an approved power source. The authentication procedure may involve the use of a challenge-response procedure using keys resident in the device and the power source. If it is determined that the power source is not an approved power source, the power source management system prevents use of or disables certain functionality of the device.

One embodiment of the invention provides a method of handling an incoming packet at a node in a network. The method includes associating at least one source identifier with a link into the node. A packet is then received at the node over the link, and a source identifier is extracted from the received packet. The extracted source identifier is compared with the source identifier(s) associated with the link in order to authenticate the packet.

Methods, systems and apparatus are provided for source authentication. In accordance with the disclosed embodiments, a key-management server generates a key-delivery message that includes a key data transport payload secured with a group key, and a source authentication payload. Upon receiving the key-delivery message at a communication device, the communication device may verify whether the source authentication payload of the key-delivery message is valid. When the source authentication payload is determined to be valid, the communication device thereby authenticates that the key-delivery message was transmitted by the key-management server.

Frame transmission source authentication is performed among terminals involved in delivery in a wireless adhoc communication system. A first terminal generates a keyed hashed value by using an authentication header key determined with respect to a second terminal, and gives it to an authentication header of a frame. The second terminal generates a keyed hashed value by using the authentication header key determined with respect to the first terminal, and compares it with the authentication header given to the frame. If the keyed hashed value generated at the second terminal matches the authentication header, it is confirmed that the frame has been transmitted from the first authenticated valid terminal. The first terminal encrypts a payload part by using a unicast encryption key determined with respect to a third terminal. This encrypted payload part can be decrypted only by the third terminal having the unicast encryption key.

Frame transmission source authentication is performed among terminals involved in delivery in a wireless adhoc communication system. A first terminal generates a keyed hashed value by using an authentication header key determined with respect to a second terminal, and gives it to an authentication header of a frame. The second terminal generates a keyed hashed value by using the authentication header key determined with respect to the first terminal, and compares it with the authentication header given to the frame. If the keyed hashed value generated at the second terminal matches the authentication header, it is confirmed that the frame has been transmitted from the first authenticated valid terminal. The first terminal encrypts a payload part by using a unicast encryption key determined with respect to a third terminal. This encrypted payload part can be decrypted only by the third terminal having the unicast encryption key.

The invention provides a method on the source of the multicast control, including: establish the source of the multicast authentication message; the source of the multicast authentication message controlling terminal updates the said the source of the multicast authentication message dynamic according to the limit of the multicast source; control the multicast message transmitted by the multicast source according to the said multicast source authentication message; the invention also provides a system on the source of the multicast control, including: master multicast source authentication server, a group of slave multicast source authentication server preset point; by this invention, the preset point request the multicast source authentication application so as to control managing the multicast source at the first time; manage different multicast addresser by setting the multicast source authentication server layer distribution, saving the resource of the net terminal; without human operation, master and slave multicast source authentication server interactive authentication message periodically and in time, so as to manage the multicast source automatically and in time; thereby realize the purpose which reduce managing and maintenance cost of the multicast internet, improve the administrating and the running ability.

A method and system for authentication is provided. A central node for issuing certificates to a plurality of nodes associated with the central node in a network is also provided. The central node receives a first key from at least one node from among the plurality of nodes and generates a second key based on the received first key and generates a certificate for the at least one node. The generated certificate is transmitted to the at least one node.

A source authentication method and apparatus according to the present invention are disclosed. The source authentication method is performed with respect to a transmission packet on a message transmission side, and includes generating a first hash value to which a first hash function is applied using a message to be included in a next packet and a key value, and generating the transmission packet including the first hash value, wherein the key value is one of at least one key value generated in advance by applying a second hash function. Meanwhile, according to the present invention, effective low-cost multicast authentication may be performed by reducing a variety of loads such as buffer management, key calculation costs, and the like.

One embodiment of the invention provides a method of handling an incoming packet at a node in a network. The method includes associating at least one source identifier with a link into the node. A packet is then received at the node over the link, and a source identifier is extracted from the received packet. The extracted source identifier is compared with the source identifier(s) associated with the link in order to authenticate the packet.