摘要:
A mutual authentication method is provided for securely agreeing application-security keys with mobile terminals supporting legacy Subscriber Identity Modules (e.g., GSM SIM and CDMA2000 R-UIM, which do not support 3G AKA mechanisms). A challenge-response key exchange is implemented between a bootstrapping server function (BSF) and mobile terminal (MT). The BSF generates an authentication challenge and sends it to the MT under a server-authenticated public key mechanism. The MT receives the challenge and determines whether it originates from the BSF based on a bootstrapping server certificate. The MT formulates a response to the authentication challenge based on keys derived from the authentication challenge and a pre-shared secret key. The BSF receives the authentication response and verifies whether it originates from the MT. Once verified, the BSF and MT independently calculate an application security key that the BSF sends to a requesting network application function to establish secure communications with the MT.
摘要:
Systems and methods of securing wireless communications between a network and a subscriber station are disclosed. One embodiment creates authentication triplets due to expire after a certain amount of time such that they may not be used indefinitely by an attacker who intercepts them.
摘要:
Systems and methods of securing wireless communications between a network and a subscriber station are disclosed. One embodiment creates authentication triplets due to expire after a certain amount of time such that they may not be used indefinitely by an attacker who intercepts them.
摘要:
Systems and methods of securing wireless communications between a network and a subscriber station include inserting a marker denoting an encryption type within a random value used for authentication, calculating a first session key and a first response value as a function of the random value, then calculating a second session key and a second response value as a function of the random value, first session key and first response value. The two levels of session keys and response values may be used by upgraded subscriber stations and network access points to prevent attackers from intercepting authentication triplets.
摘要:
Systems and methods of securing wireless communications between a network and a subscriber station include inserting a marker denoting an encryption type within a random value used for authentication, calculating a first session key and a first response value as a function of the random value, then calculating a second session key and a second response value as a function of the random value, first session key and first response value. The two levels of session keys and response values may be used by upgraded subscriber stations and network access points to prevent attackers from intercepting authentication triplets.
摘要:
Systems and methods of securing wireless communications between a network and a subscriber station are disclosed. One embodiment creates authentication triplets due to expire after a certain amount of time such that they may not be used indefinitely by an attacker who intercepts them.
摘要:
A communications system and method of bootstrapping mobile station authentication and establishing a secure encryption key are disclosed. In one embodiment of the communications network, a distinguished random challenge is reserved for generation of a secure encryption key, wherein the distinguished random challenge is not used for authentication of a mobile station. The distinguished random challenge is stored at a mobile station's mobile equipment and used to generate a secure encryption key, and a bootstrapping function in the network uses a normal random challenge to authenticate the mobile station and the distinguished random challenge to generate the secure encryption key.
摘要:
Methods and systems enable thermal treating a portion of a subject using microwave or other electromagnetic radiation without harming other portions of the subject. In an embodiment, a plurality of electromagnetic radiation transmitters are positioned within a thermal treatment system and coupled to a control processor. The electromagnetic radiation may be transmitted as a pseudorandom waveform and maybe microwave radiation. The control processor coordinates the transmitters so that emitted electromagnetic radiation constructively interferes within a treatment volume while radiation passing through the rest of the subject randomly interferes or appears as noise. As a result, in a volume in which the electromagnetic radiation waveforms arrive in phase the power of all the transmitters add constructively resulting in a significant temperature rise, while the rest of the subject is exposed to a much lower average power level and thus a lower temperature rise.
摘要:
Disclosed is an apparatus, system, and method to communicate emergency messages utilizing road markers. The road marker may include: a light emitter to emit different light colors; a transmitter; and a receiver to receive an emergency message from an emergency vehicle, a road marker gateway, or another road marker. Further, the road marker may include a processor to: to command the light emitter to emit a light color based upon the emergency message received by the receiver; and command the transmitter to transmit the received emergency message to at least one other road marker.
摘要:
Methods and devices for instructing a subscriber identity module in a cellular communications network to process non-standard authentication information in a standard manner are disclosed. One embodiment of a method comprises receiving a first message authentication code (MAC) and an authentication management field (AMF) at a subscriber identity module as part of an authentication protocol, calculating a second MAC and determining whether the second MAC is equivalent to the first MAC. If the first and second MAC are not equivalent, the SIM calculates a third MAC and determines whether the first MAC is equivalent to the third MAC, and if so, the subscriber identity module processes the AMF in a predefined or standard manner.