WO2006033745A1 - System and method for authenticating/registering network device in power line communication (plc) - Google Patents
System and method for authenticating/registering network device in power line communication (plc) Download PDFInfo
- Publication number
- WO2006033745A1 WO2006033745A1 PCT/US2005/029755 US2005029755W WO2006033745A1 WO 2006033745 A1 WO2006033745 A1 WO 2006033745A1 US 2005029755 W US2005029755 W US 2005029755W WO 2006033745 A1 WO2006033745 A1 WO 2006033745A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- streaming media
- network
- plc
- media device
- power line
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0435—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
- H04L63/061—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key exchange, e.g. in peer-to-peer networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/18—Network architectures or network communication protocols for network security using different networks or channels, e.g. using out of band channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/5445—Local network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/545—Audio/video application, e.g. interphone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5483—Systems for power line communications using coupling circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5491—Systems for power line communications using filtering and bypassing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/60—Digital content management, e.g. content distribution
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security
Definitions
- This invention pertains generally to power line communications, and more particularly to an apparatus and method of establishing a compatible network key for encrypting and decrypting communications between streaming media devices communicating over a PLC network.
- Clients 14, 16 may comprise any device configured for receiving or transmitting audio and/or video content through the PLC network, although they may also communicate content by other means as well, such as line-in, line-out connections, and so forth.
- Clients 14, 16 are depicted as video monitors or television sets 22, 24, however, it should be appreciated that clients may comprise video/audio playback or recording devices, cameras, audio recording equipment, audio systems, video monitors, television systems, control panels, monitoring devices, alarm control equipment, and so forth.
- PLC networking One principle advantage of PLC networking is that a separate network connection between server 12 and clients 14, 16 need not be established, because the devices are already coupled through the common AC power line from which they draw operating power.
- content encryption-decryption can provide security it is often troublesome to provide and share a decryption key.
- One method of establishing the encryption-decryption network key is for the user to manually enter a network key value for the device.
- the key can comprise a long series of digits making entry difficult, while not every client device is necessarily configured with a keypad or sufficiently adept user interface to I readily allow entry of the key.
- manual entry of the decryption key adds another level of complexity to utilizing PLC network communication.
- the security key could be shared over the PLC network itself, but this could also allow external devices of other entities to capture the key thus compromising security.
- a network key is shared from an administrator device to an applicant device.
- the device operating as administrator provides at least one socket (i.e., 2 or 3 wire AC socket) for connecting the power cord of another streaming media device which will operate in an applicant mode to obtain a compatible network key.
- Connection of the applicant to the socket in the administrator is configured according to the invention for establishing a direct and private connection between applicant and administrator.
- the circuitry determines if it has a network key which is compatible with the administrator. If not, then the administrator establishes a secure connection with the applicant, such as by activating a PLC data filter, and provides a proper network key for storage and use by the applicant.
- additional information can be optionally provided according to the invention along with the network key (NK) value, such as a network identification (NID) value.
- NID network identification
- Embodiments of the present invention provide a number of beneficial aspects which can be implemented either separately or in any desired combination.
- the inventive aspects include, but are not necessarily limited to, the following.
- An aspect of the invention provides methods and apparatus for establishing a common network key between streaming media devices subject to connection on a power line communications (PLC) network.
- PLC power line communications
- the present invention provides mechanisms for sharing a network key between PLC devices, in particular streaming media devices, without the need for manually entering a network key on the various devices.
- All devices configured for communicating with one another over the power line communication network such as those devices belonging to a specific entity (e.g., household, company, and so forth), must share a common, or at least a compatible, network identification (NID) and network key (NK).
- NID network identification
- NK network key
- the network key and other data may be stored in data memory (e.g., RAM, registers, and the like) while the programming may be stored in non-volatile memory (e.g., ROM, FLASH, and so forth) or volatile memory loaded from a media containing the code.
- the network key can comprise a fixed value encoded within the hardware of device 52, although it is more preferably selectable within device 52 to allow for changing of the network key.
- First device 52 may also be configured for receiving the network key from another device, such as another administrator, thus allowing multiple administrators to be coupled within a PLC network.
- the network key can be copied from a default network key installed as a default value.
- the sharing aspects of the present invention can be utilized in combination with other mechanisms for securely communicating data.
- the connection of a PLC-enabled device on the direct connection can be recognized in response to detecting that power is being supplied through the direct connection or that PLC data is being received over the direct connection, or a combination thereof.
- the network key is delivered to the new device.
- a signal is preferably output to indicate the completion of the registration process, such as an audio output, or indicator (i.e., indicator 56 in FIG. 3). The generation of the signal indicates that the registration process has completed successfully and that the new device may be disconnected and connected in the PLC network wherein it is prepared for securely communicating with the administration device and other device which have already received a network key.
- the PLC devices are also preferably configured with memory for retaining a network ID (NID) and a network key (NK), while administrators preferably retain a value for default network ID (DNID) and default network key (DNK) which should be unique for each administrator, while the DNID preferably has a one-to-one correspondence to the DNK.
- NID network ID
- NK network key
- all streaming media devices of a given entity operating on a particular PLC network should be registered by a single administrator device, or over multiple administrator devices which themselves have been registered with one another so that they share an identical, or at least compatible, network key value. In this way all the device on the network will utilize compatible encryption and decryption and thus be able to properly communicate with one another.
- embodiments of the invention can be configured to allow the user to establish a desired value for the NID and NK, or to establish a desired DNID or DNK to which new applicant devices will be configured.
- a DIP-switch, or software selector may be provided allowing the user to select registration or unregistration modes. When a device is connected in unregistration mode, the administrator sends an invalid value for NID and/or NK by which the applicant devices become reset back to unusable values, wherein their need of registration data is readily apparent.
- a removable network key sharing circuit can be configured for receiving a network ID and network key while connected to an administrator (or any other device serving as a source of an NID and NK). After which the module is connected to an applicant which loads the new NID and NK from the module.
- the module can comprise a device which plugs between an AC plug and a receptacle on the PLC network.
- the device can contain similar filtering mechanisms described above, in addition to memory for containing the NID and NK.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007528082A JP2008511215A (en) | 2004-08-20 | 2005-08-19 | Communication system, communication method, and network key sharing method |
CN2005800286898A CN101010885B (en) | 2004-08-20 | 2005-08-19 | System and method for authenticating/registering network device in power line communication |
EP05790899.8A EP1779541B1 (en) | 2004-08-20 | 2005-08-19 | System and method for authenticating/registering network device in power line communication (plc) |
KR1020077003852A KR101129108B1 (en) | 2004-08-20 | 2005-08-19 | System and method for authenticating/registering network device in power line communication |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US60348304P | 2004-08-20 | 2004-08-20 | |
US60/603,483 | 2004-08-20 | ||
US63704904P | 2004-12-16 | 2004-12-16 | |
US60/637,049 | 2004-12-16 | ||
US11/045,734 | 2005-01-28 | ||
US11/045,734 US7616762B2 (en) | 2004-08-20 | 2005-01-28 | System and method for authenticating/registering network device in power line communication (PLC) |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006033745A1 true WO2006033745A1 (en) | 2006-03-30 |
Family
ID=35909095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/029755 WO2006033745A1 (en) | 2004-08-20 | 2005-08-19 | System and method for authenticating/registering network device in power line communication (plc) |
Country Status (6)
Country | Link |
---|---|
US (1) | US7616762B2 (en) |
EP (1) | EP1779541B1 (en) |
JP (1) | JP2008511215A (en) |
KR (1) | KR101129108B1 (en) |
CN (1) | CN101010885B (en) |
WO (1) | WO2006033745A1 (en) |
Cited By (1)
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CN105141342A (en) * | 2015-02-15 | 2015-12-09 | 美的集团股份有限公司 | Method and system used for adding power line carrier wave communication network to electric appliance equipment |
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US7616762B2 (en) | 2009-11-10 |
KR20070048730A (en) | 2007-05-09 |
US20060038660A1 (en) | 2006-02-23 |
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EP1779541B1 (en) | 2018-10-31 |
JP2008511215A (en) | 2008-04-10 |
EP1779541A4 (en) | 2011-08-10 |
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EP1779541A1 (en) | 2007-05-02 |
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