摘要:
A method and a device for key generation are disclosed in embodiments of the present invention. The method for key generation is applied to a UMTS-LTE resource convergence scenario that has a base station as an anchor point, and includes: deriving, according to a root key and a count value of an LTE system, or according to a random number and an LTE system root key, a UMTS integrity key and cipher key, and sending the UMTS integrity key and cipher key to a UMTS control node, so that the UMTS control node implements cipher and integrity protection by using the UMTS integrity key and cipher key. The embodiments of the present invention enable the derivation of the UMTS integrity key and cipher key in a UMTS-LTE resource convergence scenario that has a base station as an anchor point, enable a user equipment to communicate securely through a UMTS, and further improve security of data transmitted in the UMTS.
摘要:
A method for implementing local Internet Protocol (IP) access includes: obtaining User Equipment (UE)'s first information that is used for implementing local IP access; and implementing local IP access of the UE according to the first information. A system for implementing local IP access is disclosed by the present invention. The system can communicate with UE and includes: a NodeB, configured to obtain UE's first information that is used for implementing local IP access, and implement local IP access of the UE according to the first information; and a core network node, configured to assist the NodeB in obtaining the UE's first information that is used for implementing local IP access. Besides, relevant network devices are also disclosed.
摘要:
A method, apparatus and system for key derivation are disclosed. The method includes the following steps: a target base station) receives multiple keys derived by a source base station, where the keys correspond to multiple cells under control of the target base station; the target base station selects a key corresponding to the target cell after knowing a target cell that a user equipment (UE) wants to access. An apparatus for key derivation and a communication system are also provided.
摘要:
A method, apparatus and system for key derivation are disclosed. The method includes the following steps: a target base station) receives multiple keys derived by a source base station, where the keys correspond to multiple cells under control of the target base station; the target base station selects a key corresponding to the target cell after knowing a target cell that a user equipment (UE) wants to access. An apparatus for key derivation and a communication system are also provided.
摘要:
Embodiments of the present invention disclose a method and an apparatus for authenticating a communication device, where the method includes: receiving an attach request including a group identifier and sent by an MTC device to be authenticated, where the group identifier is a group identifier of an MTC group where the MTC device to be authenticated is located; determining whether a first group authentication vector bound to the group identifier exists locally, where the first group authentication vector is an authentication vector used for authenticating MTC devices in the MTC group; and if existing, according to the first group authentication vector, authenticating the MTC device to be authenticated, and generating a system key of the MTC device to be authenticated. The technical solutions provided in the present invention can be applied to the technical field of authenticating the MTC device.
摘要:
A method, apparatus and system for key derivation are disclosed. The method includes the following steps: a target base station) receives multiple keys derived by a source base station, where the keys correspond to multiple cells under control of the target base station; the target base station selects a key corresponding to the target cell after knowing a target cell that a user equipment (UE) wants to access. An apparatus for key derivation and a communication system are also provided.
摘要:
This application provides a camera module and an electronic device, and relates to the field of electronic device technologies, to ensure shooting quality of the camera module, and reduce a volume of the camera module. The camera module includes an optical camera lens, a variable aperture, and an SMA motor. Relative positions of the variable aperture and the optical camera lens are fixed. The variable aperture has an aperture hole whose size is adjustable. The aperture hole is located on a light inlet side of the optical camera lens, and is opposite to a light inlet surface of the optical camera lens. The SMA motor includes a first carrier, a base, and an SMA drive assembly. The optical camera lens is fastened to the first carrier. The SMA drive assembly is connected between the first carrier and the base. The SMA drive assembly is configured to drive the first carrier, the optical camera lens, and the variable aperture to move together relative to the base, so as to implement automatic focusing and/or optical image stabilization. The camera module provided in embodiments of this application is configured to shoot a photo/video.