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US 8,577,293 B2Granted
Communication system and communication device
AssigneeSony Corporation
InventorsYoshihisa Takayama, Tadashi Morita
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AssigneeSony Corporation
InventorsYoshihisa Takayama, Tadashi Morita
Estimating the term…
A communication apparatus includes a short-range communication unit that receives an inquiry signal from a short-range external communication apparatus and transmits a response signal in response to the inquiry signal. The communication apparatus also includes a long-range communication unit that communicates in a range wider than a communication area of the short-range communication unit. Further, the communication apparatus includes a session key generation unit that generates a session key, and an encrypting unit that encrypts the session key. The communication apparatus uses an encryption key transmitted from an external communication apparatus to encrypt the session key into an encrypted session key, transmits the encrypted session key to the external communication apparatus, and receives from the external communication apparatus a request signal to request a long-range communication, with the session key, by the long-range communication unit by using the short-range communication unit.
A communication apparatus, comprising:
A method implemented by a communication apparatus, the method comprising:
A non-transitory recording medium encoded with computer executable instructions, wherein the instructions, when executed by a processing unit, cause the processing unit to perform a method comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely…: using…
Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for…:…
Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols: using a plurality of keys…
Wherein the data content is protected, e.g. by encrypting or encapsulating the payload: wherein the sending and receiving network entities apply…
About 1 month of term left · ends 27 Nov 2026 (estimated)
The present invention relates to a communication system and a secure communication apparatus, which are capable of transmitting and receiving data by wireless communication.
Communication systems in which information processing apparatuses, such as computers, are connected to each other with wireless communication means, such as a WLAN (wireless local area network) or Bluetooth®, to transmit and receive information including files and data and to share the information are generally built along with advancement of information technology.
In recent years, long-range-communication-function mounted apparatuses, in which communication devices capable of long range communication using Bluetooth or the like are mounted on mobile phones or personal computers, are used to transmit and receive large volume data including moving picture data and music data (for example, refer to Japanese Unexamined Patent Application Publication No. 2003-324446).
FIG. 1 is a schematic diagram showing the structure of a communication system according to an embodiment.
FIG. 2 is a block diagram schematically showing the structure of a secure communication apparatus according to an embodiment.
FIG. 3 is a block diagram schematically showing the structure of another secure communication apparatus according to an embodiment.
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals are used in the following description and the accompanying drawings to identify components having approximately the same functions and structures. A duplicated description of such components is omitted herein.
A communication system according to an embodiment will now be described with reference to FIG. 1. FIG. 1 is a schematic diagram showing the structure of the communication system according to this embodiment.
As shown in FIG. 1, the communication system according to this embodiment includes at least multiple secure-communication-function mounted apparatuses 10 (10a, 10b, . . . , 10j).