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公开(公告)号：US11533609B2
公开(公告)日：2022-12-20
申请号：US16941769
申请日：2020-07-29
IPC分类号： H04W12/03 , H04W12/06 , H04W36/00 , H04W60/04 , H04W12/041 , H04W12/106
摘要： A message protection method and an apparatus are disclosed. The method includes: When a terminal prepares to hand over from a first-standard system to a second-standard system, the terminal may not have a security context of the second-standard system after handover. Therefore, in the method of the present disclosure, the terminal performs integrity protection on a registration request message and a location update request message by using an integrity key in a security context of the first-standard system before handover. Both the registration request message and the location update request message are messages for triggering handover. Therefore, in the method, security protection is implemented on the message for triggering handover, thereby helping improve communication security.
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公开(公告)号：US10999736B2
公开(公告)日：2021-05-04
申请号：US16795087
申请日：2020-02-19
摘要： A communication method and related device are disclosed. In at least one embodiment, a reference message authentication code is obtained by a terminal device based on a first message authentication code and a second message authentication code. The first message authentication code is used by an AMF to check a service request message, and the second message authentication code is used by an SMF to check the service request message. and sending, by the terminal device, first information and the service request message are sent by the terminal device to the AMF. The first information is used to instruct the AMF to send the service request message to the SMF. The service request message includes second information. The second information includes the reference message authentication code. The SMF can perform a security check on the service request message to ensure security of a communications network.
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公开(公告)号：US20240235844A9
公开(公告)日：2024-07-11
申请号：US18400283
申请日：2023-12-29
发明人： Kai Pan , Miao Yang , Mingchao Li
CPC分类号： H04L9/3242 , H04L9/0618 , H04L9/14
摘要： In a communication method, when MAC addresses in a plurality of VSI messages conflict, in response to only some of the VSI messages, a VSI message receiving end sends an action response message carrying a conflicting MAC address. In this way, a device that can correctly decrypt the action response message can decrypt, for a few times, ciphertext information in received action-request messages using a key of the device.
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公开(公告)号：US20230345239A1
公开(公告)日：2023-10-26
申请号：US18342497
申请日：2023-06-27
IPC分类号： H04W12/041 , H04W12/03
CPC分类号： H04W12/041 , H04W12/03 , H04W12/12
摘要： A data transmission method and apparatus are provided. When the data transmission method is applied to a first device, the method includes: when a fresh value corresponding to a message to be sent by the first device is a first fresh value, updating an encryption key from a first key to a second key, and generating a first keystream based on the first fresh value and the second key; encrypting first data based on the first keystream, to obtain the encrypted first data; generating a first message based on the encrypted first data and the first fresh value; and sending the first message to a second device.
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公开(公告)号：US20230155813A1
公开(公告)日：2023-05-18
申请号：US18156845
申请日：2023-01-19
发明人： Kai Pan
IPC分类号： H04L9/08 , H04W4/44 , H04W12/069
CPC分类号： H04L9/0825 , H04W4/44 , H04W12/069
摘要： A vehicle certificate application method implemented by a vehicle-mounted device includes sending a certificate proxy application message to a roadside unit RSU in response to determining that the Uu interface of the vehicle-mounted device is unavailable or the signal quality of the Uu interface is lower than the threshold. The certificate proxy application message includes certificate application information of a vehicle to which the vehicle-mounted device is mounted. The certificate application information is forwarded by the RSU to a third-party authority. The vehicle-mounted device receives, from the RSU, a certificate proxy application response that includes an identity certificate of the vehicle generated by the third-party authority based on the certificate application information.
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公开(公告)号：US20220256344A1
公开(公告)日：2022-08-11
申请号：US17731931
申请日：2022-04-28
IPC分类号： H04W12/069 , H04W4/40 , H04W12/106
摘要： A communication method performed by a second apparatus includes sending a first message to a first apparatus, where the first message is used for requesting M pieces of verification information from the first apparatus; the second apparatus receives a second message from the first apparatus, where the second message includes N pieces of verification information included in the M pieces of verification information, and N is an integer less than or equal to M.
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公开(公告)号：US11140545B2
公开(公告)日：2021-10-05
申请号：US16522278
申请日：2019-07-25
IPC分类号： H04L29/06 , H04W12/03 , H04W8/20 , H04W12/10 , H04W12/041
摘要： The present disclosure relates to methods, apparatus, and systems for protecting data in a communications system. One example method includes obtaining, by a core network node, information associated with a service of a terminal device, and determining, by the core network node and based on the information associated with the service, a network node that is to perform security protection on data of the service.
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公开(公告)号：US11882436B2
公开(公告)日：2024-01-23
申请号：US18150962
申请日：2023-01-06
IPC分类号： H04W12/041 , H04W4/70 , H04L9/08 , H04W8/02 , H04W36/00 , H04W12/106 , H04W12/0433
CPC分类号： H04W12/041 , H04L9/0869 , H04W4/70 , H04W8/02 , H04W12/0433 , H04W12/106 , H04W36/0022 , H04L2209/80
摘要： A key generation method includes determining, by an access and mobility management function node, key-related information. The method also includes sending, by the access and mobility management function node, a redirection request message to a mobility management entity. The redirection request message includes the key-related information, and the redirection request message is used to request to hand over a voice service from a packet switched (PS) domain to a circuit switched (CS) domain. The method further includes receiving, by the mobility management entity, the redirection request message. The method additionally includes generating, by the mobility management entity, an encryption key and an integrity protection key for the voice service based on the key-related information.
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公开(公告)号：US20220294649A1
公开(公告)日：2022-09-15
申请号：US17831136
申请日：2022-06-02
发明人： Kai Pan , Jing Chen , Xiaojun Wang
摘要： A certificate revocation list updating method includes determining by a first road side unit (RSU), based on a first certificate revocation list stored by the first RSU, that a certificate used by a first on board unit (OBU) in a coverage area of the first RSU is revoked, sending, by the first RSU, a first notification message to one or more OBUs in the coverage area of the first RSU, where the first notification message notifies the one or more OBUs to update a certificate revocation list.
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公开(公告)号：US20210058789A1
公开(公告)日：2021-02-25
申请号：US17089216
申请日：2020-11-04
摘要： This application provides a method for restricting access of a terminal device, and an apparatus. The method includes: receiving, by an access network device, a first identifier that is from a terminal device, where the first identifier is used to identify the terminal device; and if the first identifier matches a second identifier, restricting, by the access network device, access of the terminal device, where the second identifier is used to identify a terminal device having abnormal behavior. Based on the solution, the access network device pre-records the second identifier of the terminal device having the abnormal behavior.
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