Information processing apparatus and method, recording medium and program

Abstract

The present invention relates to an information processing apparatus allowing proper communication with a communication partner in accordance with a communication time of the communication partner.

What is claimed is: 
     
         1 . An electronic device comprising:
 circuitry configured to
 transmit a random number to share secret information between the electronic device and another electronic device, wherein the random number is transmitted using transmission control protocol (TCP); 
 receive the secret information based on the random number from the another electronic device; 
 count a time elapsed from transmitting the random number; and 
 compare the secret information with expected authentication data generated at the electronic device, wherein 
   transmission of content data is authorized when a result of the comparing indicates that the secret information matches the expected authentication data and the secret information is received at the electronic device before a predetermined time elapsed from transmitting the random number expires.   
     
     
         2 . The electronic device of  claim 1 , wherein
 transmission of content data is not authorized when the result of the comparing indicates that the secret information does not match the expected authentication data.   
     
     
         3 . The electronic device of  claim 1 , wherein
 transmission of content data is not authorized when the secret information is not received at the electronic device before a predetermined time elapsed from transmitting the random number expires.   
     
     
         4 . The electronic device of  claim 1 , wherein
 the circuitry includes a processor configured to execute a program stored in memory and an interface connected to a communication interface, which is configured to communicate with the another electronic device.   
     
     
         5 . The electronic device of  claim 8 , wherein the circuitry is configured to output a video signal to a display. 
     
     
         6 . The electronic device of  claim 1 , further comprising:
 a user interface configured to receive a user input.   
     
     
         7 . The electronic device of  claim 1 , further comprising:
 a memory configured to store data to be transmitted to the another electronic device.   
     
     
         8 . The electronic device of  claim 1 , further comprising:
 a communication interface.   
     
     
         9 . The electronic device of  claim 8 , wherein the communication interface is an Ethernet interface. 
     
     
         10 . The electronic device of  claim 1 , wherein
 the another electronic device is a target for a locality check by the electronic device.   
     
     
         11 . The electronic device of  claim 1 , wherein
 a secret key is shared between the electronic device and the another electronic device.   
     
     
         12 . The electronic device of  claim 2 , wherein
 the secret key is shared between the electronic device and the another electronic device before the random number is transmitted.   
     
     
         13 . A method performed by an electronic device, the method comprising:
 transmitting a random number to share secret information between the electronic device and another electronic device, wherein the random number is transmitted using transmission control protocol (TCP);   receiving the secret information based on the random number from the another electronic device;   counting a time elapsed from transmitting the random number; and   comparing the secret information with expected authentication data generated at the electronic device, wherein   transmission of content data is authorized when a result of the comparing indicates that the secret information matches the expected authentication data and the secret information is received at the electronic device before a predetermined time elapsed from transmitting the random number expires.   
     
     
         14 . The method of  claim 13 , wherein
 transmission of content data is not authorized when the result of the comparing indicates that the secret information does not match the expected authentication data.   
     
     
         15 . The method of  claim 13 , wherein
 transmission of content data is not authorized when the secret information is not received at the electronic device before a predetermined time elapsed from transmitting the random number expires.   
     
     
         16 . A non-transitory computer-readable medium including computer-program instructions, which when executed by an electronic device, cause the electronic device to:
 transmit a random number to share secret information between the electronic device and another electronic device, wherein the random number is transmitted using transmission control protocol (TCP);   receive the secret information based on the random number from the another electronic device;   count a time elapsed from transmitting the random number; and   compare the secret information with expected authentication data generated at the electronic device, wherein   transmission of content data is authorized when a result of the comparing indicates that the secret information matches the expected authentication data and the secret information is received at the electronic device before a predetermined time elapsed from transmitting the random number expires.   
     
     
         17 . The non-transitory computer-readable medium of  claim 16 , wherein
 transmission of content data is not authorized when the result of the comparing indicates that the secret information does not match the expected authentication data.   
     
     
         18 . The non-transitory computer-readable medium of  claim 16 , wherein
 transmission of content data is not authorized when the secret information is not received at the electronic device before a predetermined time elapsed from transmitting the random number expires.