Browsing by Author "Tseng Chien-Chao"

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Group authentication method
(2011-08-23)
Chen Yu-Wen
;
Wang Jui-Tang
;
Tseng Chien-Chao
A group authentication method adaptable to a communication system is disclosed. The communication system includes a user group, a serving network, and a home network. The user group includes at least one mobile station. The home network pre-distributes a group authentication key to itself and all the mobile stations in the same user group and generates a mobile station authentication key for each mobile station. The home network generates a group list for recording related information of the user group. The home network has a database for recording the group list. The serving network has a database for recording the group list and a group authentication data received from the home network. The group authentication method includes following steps. The serving network performs an identification action to a mobile station. The communication system performs a full authentication action or a local authentication action according to the result of the identification action.
Integrated storage platform system and method thereof
(2014-12-23)
Tseng Chien-Chao
;
Ho Cheng-Yun
;
Lin Chia-Liang
;
Wu Chieh
The present invention discloses an integrated storage platform system and a method thereof. The system comprises at least one adaption module respectively connecting with at least one storage space and each performing a plurality of adaption settings corresponding to one storage space; a storage administration module connecting with the adaption modules and processing the files of the storage spaces; and an access interface connecting the storage administration module, operated by a user to access the storage space through the storage administration module and the adaption module, and presenting access results to the user. The present invention establishes different adaption modules to enable the user to link to and access different types of storage spaces.
Method for key generation, member authentication, and communication security in dynamic group
(2014-10-21)
Tseng Chien-Chao
;
Ho Tzu-Hsin
The present invention provides a method for keys generation, member authentication and communication security in a dynamic group, which comprises steps: assigning each member an identification vector containing common group identification vector elements and an individual identification vector element, and generating an authentication vector and an access control vector for each member according to the identification vector; using the identification vector elements to generate public key elements and establish an authentication public key and an access control public key; and using a polynomial and the identification vector to generate a private key. The present invention uses these public keys and private keys, which are generated from the identification vectors, to implement serverless member authentication and data access control, whereby is protected privacy of members and promoted security of communication.
Power-efficient backbone-oriented wireless sensor network, method for constructing the same and method for repairing the same
(2013-04-23)
Huang Kuei-Li
;
Wu Chao-Nan
;
Wang Jui-Tang
;
Tseng Chien-Chao
The present invention discloses a power-efficient backbone-oriented wireless sensor network, a method for constructing the same and a method for repairing the same, wherein energy-rich nodes are used to form backbones linking to a server, and wherein regular nodes having limited energy storage link to the backbones. When one energy-rich node malfunctions, the energy-rich node, which is posterior to the malfunctioning energy-rich node, searches for and links to a linkable neighboring energy-rich node on the backbone. If there is none linkable neighboring energy-rich node, the regular nodes are used to form a temporary tunnel until the malfunctioning energy-rich node has been repaired. The present invention can relieve the influence of hot spots, increase the robustness of the wireless sensor network, and prolong the service life of the wireless sensor network.
Routing method and routing path recovery mechanism in wireless sensor network environment
(2011-07-19)
Lai Jun-Yu
;
Huang Kuei-Li
;
Wang Jui-Tang
;
Tseng Chien-Chao
;
Wu Chao-Nan
The present invention discloses an asymmetric routing method and routing path recovery mechanism. The wireless sensor network environment includes at least a management unit, at least a gateway, and mobile nodes. When joining, each mobile node obtains an unique ID code and, additionally, a depth as the gradient to the management unit. Accordingly, a mobile node sends an uplink packet via a nearby node with lower depth to the management unit; while the management unit transmits a downlink packet to a mobile node by utilizing the source route method. When the parent node of a mobile node is damaged or moves to another position or said mobile node with its sub-tree descendants changes their position together, the uplink routing path is recovered via selecting a nearby node of the sub-tree as relay node and the downlink routing path is recovered via sending a control message to the management unit.