Telecommunications apparatus and method, storage medium, and program

• US 8,743,739 B2
• Filed: 08/02/2013
• Issued: 06/03/2014
• Est. Priority Date: 12/26/2002
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Nakano, Takehiko
• Primary Examiner(s): Thompson, Jr., Otis L
• Application Number:
  US13/958,384
• Publication Number:
  US 20130322337A1
• Time in Patent Office: 305 Days
• Field of Search: None
• US Class Current: 370/254
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: H04L 43/0864 Round trip delays
• CPC Class Codes: H04L 43/10 Active monitoring, e.g. heartbeat, ping or trace-route
• CPC Class Codes: H04L 43/50 Testing arrangements
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources
• CPC Class Codes: H04L 69/163 In-band adaptation of TCP data exchange; In-band control procedures
• CPC Class Codes: H04W 24/06 Testing, supervising or monitoring using simulated traffic

Abstract

The present invention relates to a telecommunications apparatus and a method, a storage medium, and a program for determining whether or not an other side communicating apparatus is near in a network. In a transmitting apparatus, a transmitting unit transmits a sending-message, and a control unit receives a response message to the sending-message, which includes acknowledgement information based on shared data and transmission information in the sending-message. The transmitting apparatus also includes a first judging unit that judges whether a response time of the acknowledgement message is less than a predetermined time. A receiving apparatus includes a generating unit that generates the acknowledgment information and transmits the response message to the transmitting apparatus.

Claims

1. An electronic device comprising:

circuitry configured to

output a check packet to another electronic device using Transmission Control Protocol (TCP);

receive a TCP acknowledgement message to the check packet from the another electronic device, the TCP acknowledgement message including acknowledgement information based on shared data shared with the another electronic device;

compute expected acknowledgment information based on the shared data shared with the another electronic device;

produce a comparison result for the another electronic device based on the acknowledgment information and the expected acknowledgment information;

count a time elapsed from transmitting the check packet; and

determine that authentication has failed when the comparison result indicates that acknowledgment information and the expected acknowledgment information do not match or when a predetermined time elapsed from transmitting the check packet expires before the TCP acknowledgement message is received.

2. The electronic device according to claim 1, wherein the shared data is a key shared between the electronic device and the another electronic device.

3. The electronic device according to claim 2, wherein the key is shared between the electronic devices and the another electronic device before the check packet is transmitted.

4. The electronic device according to claim 3, wherein at least one of the acknowledgement information and expected acknowledgement information is generated using a hash function.

5. The electronic device according to claim 4, wherein the time counted includes a time between transmission of the check packet and reception of the TCP acknowledgement message.

6. The electronic device according to claim 2, wherein the circuitry includes a processor configured to process a program stored in a memory and an interface coupled to a communication interface.

7. The electronic device according to claim 6, wherein the circuitry is configured to output a video signal to a display.

8. The electronic device according to claim 2, further comprising:

a communication interface configured to transmit or receive data.

9. The electronic device according to claim 8, wherein the communication interface is an Ethernet interface.

10. The electronic device according to claim 8, further comprising:

a display configured to display operation screen.

11. The electronic device according to claim 10, further comprising:

a user interface configured to receive user input.

12. The electronic device according to claim 11, further comprising:

a memory configured to store data to be transmitted to the another electronic device.

13. The electronic device according to claim 1, wherein the another electronic device is a target device to be locality checked.

14. The electronic device according to claim 1, wherein

the check packet is generated based on a random number that is different from random numbers used to generate other check packets output from the electronic device.

15. An electronic device comprising:

means for outputting a check packet to another electronic device using Transmission Control Protocol (TCP);

means for receiving a TCP acknowledgement message to the check packet from the another electronic device, the TCP acknowledgement message including acknowledgement information based on shared data shared with the another electronic device;

means for computing expected acknowledgment information based on the shared data shared with the another electronic device;

means for producing a comparison result for the another electronic device based on the acknowledgment information and the expected acknowledgment information;

means for counting a time elapsed from transmitting the check packet; and

means for determining that authentication has failed when the comparison result indicates that acknowledgment information and the expected acknowledgment information do not match or when a predetermined time elapsed from transmitting the check packet expires before the TCP acknowledgement message is received.

16. The electronic device according to claim 15, wherein

the check packet is generated based on a random number that is different from random numbers used to generate other check packets output from the electronic device.

17. A method performed by an electronic device, the method comprising:

outputting a check packet to another electronic device using Transmission Control Protocol (TCP);

receiving a TCP acknowledgement message to the check packet from the another electronic device, the TCP acknowledgement message including acknowledgement information based on shared data shared with the another electronic device;

computing expected acknowledgment information based on the shared data shared with the another electronic device;

producing a comparison result for the another electronic device based on the acknowledgment information and the expected acknowledgment information;

counting a time elapsed from transmitting the check packet; and

determining that authentication has failed when the comparison result indicates that acknowledgment information and the expected acknowledgment information do not match or when a predetermined time elapsed from transmitting the check packet expires before the TCP acknowledgement message is received.

18. The method according to claim 17, wherein

the check packet is generated based on a random number that is different from random numbers used to generate other check packets output from the electronic device.

19. A non-transitory computer-readable medium including computer-program instructions, which when executed by an electronic device, cause the electronic device to:

output a check packet to another electronic device using Transmission Control Protocol (TCP);

receive a TCP acknowledgement message to the check packet from the another electronic device, the TCP acknowledgement message including acknowledgement information based on shared data shared with the another electronic device;

compute expected acknowledgment information based on the shared data shared with the another electronic device;

produce a comparison result for the another electronic device based on the acknowledgment information and the expected acknowledgment information;

count a time elapsed from transmitting the check packet; and

determine that authentication has failed when the comparison result indicates that acknowledgment information and the expected acknowledgment information do not match or when a predetermined time elapsed from transmitting the check packet expires before the TCP acknowledgement message is received.

20. The non-transitory computer-readable medium according to claim 19, wherein

the check packet is generated based on a random number that is different from random numbers used to generate other check packets output from the electronic device.