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AssigneeInstitute for Information Industry
InventorsJui-Ming Wu, You-Lian Huang, Chih-Chiang Hsieh, Emery Jou
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A major management apparatus, an authorized management apparatus, an electronic apparatus for delegated key management and key management methods thereof are provided. The major management apparatus generates a first delegation deployment message and a second delegation deployment message, which are transmitted to the authorized management apparatus and the electronic apparatus, respectively. The authorized management apparatus encrypts an original key management message into a key management message by an authorization key included in the first delegation deployment message. The original key management message includes an operation code and a key identity. The electronic apparatus decrypts the key management message into the original key management message by the authorization key included in the second delegation deployment message. The electronic apparatus selects an application key according to the key identity and operates the application key based on the operation code.
A major management apparatus for delegated key management, a network system comprising the major management apparatus, an authorized management apparatus, and an electronic apparatus, the major management apparatus comprising:
An authorized management apparatus for delegated key management, a network system comprising the authorized management apparatus, a major management apparatus, and an electronic apparatus, the authorized management apparatus comprising:
An electronic apparatus, a network system comprising the electronic apparatus, a major management apparatus, and an authorized management apparatus, the electronic apparatus comprising:
A key management method for a major management apparatus, a network system comprising the major management apparatus, an authorized management apparatus, and an electronic apparatus, the key management method comprising the steps of:
A key management method for an authorized management apparatus, a network system comprising the authorized management apparatus, a major management apparatus, and an electronic apparatus, the key management method comprising the steps of:
A key management method for an electronic apparatus, a network system comprising the electronic apparatus, a major management apparatus, and an authorized management apparatus, and the electronic apparatus storing a first application key, the key management method comprising the steps of:
Dependencies are inferred from the claim text.
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Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols: key distribution or…
Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely…: using…
Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely…:…
Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords: revocation or update of secret…
About 6 years 2 months of term left · ends 23 Dec 2032 (estimated)
This application claims priority to Taiwan Patent Application No. 101145820 filed on Dec. 6, 2012, the entirety of which is hereby incorporated by reference herein.
The present invention relates to a major management apparatus, an authorized management apparatus, an electronic apparatus, and key management methods thereof. More particularly, the present invention relates to a major management apparatus, an authorized management apparatus, an electronic apparatus, and key management methods thereof that adopt a delegating key management mechanism.
The network technologies have been developed for many years. FIG. 1 depicts a schematic view of a conventional network system 1. The network system 1 comprises a server 11, a plurality of gateways 13, and a plurality of electronic apparatuses 15. The server 11 connects to the gateways 13 via the Internet and manages the electronic apparatuses 15 via the gateways 13. In recent years, this architecture of the network system 1 is often used in Internet of Things (IoT) systems, such as Advanced Metering Infrastructure (AMI) systems. When the network system 1 is an AMI system, the server 11 may be a meter data management system (MDMS), each of the gateways 13 may be a concentrator, and each of the electronic apparatuses 15 may be a smart meter.
FIG. 1 depicts a schematic architecture of a conventional network system;
FIG. 2 depicts a schematic view of a network system 2 according to a first embodiment;
FIG. 3 depicts a schematic view of signal transmissions according to the first embodiment;
In the following descriptions, a major management apparatus, an authorized management apparatus, an electronic apparatus, and key management methods thereof according to the present invention will be explained with reference to example embodiments thereof. However, these example embodiments are not intended to limit the present invention to any specific example, embodiment, environments, applications or implementations described in these embodiments. Therefore, description of these embodiments is only for purpose of illustration rather than to limit the present invention. It shall be appreciated that, in the following embodiments and the attached drawings, elements not directly related to the present invention are omitted from depiction.
FIG. 2 depicts a schematic view of a network system 2 according to a first embodiment, while FIG. 3 depicts a schematic view of signal transmissions according to the first embodiment. The network system 2 comprises a major management apparatus 21, an authorized management apparatus 23, and a plurality of electronic apparatuses 25. Since the operations of the electronic apparatuses 25 are all the same, only one of the electronic apparatuses 25 is depicted in FIG. 2 and the following description will focus on only one of the electronic apparatuses 25.
The network system 2 may be an Internet of Things (IoT) system, such as an Advanced Metering Infrastructure (AMI) system. When the network system 2 is an AMI system, the major management apparatus 21 may be a head end system or a meter data management system (MDMS), the authorized management apparatus 23 may be a concentrator or a gateway, and each of the electronic apparatuses 25 may be a terminal device or a smart meter.