Information terminal apparatus, information processing apparatus and information communication system

• US 8,099,772 B2
• Filed: 05/28/2008
• Issued: 01/17/2012
• Est. Priority Date: 06/26/2002
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takada, Masayuki, Muto, Takayasu
• Primary Examiner(s): Shiferaw, Eleni
• Assistant Examiner(s): Teslovich, Tamara
• Application Number:
  US12/128,473
• Publication Number:
  US 20080232586A1
• Time in Patent Office: 1,329 Days
• Field of Search: 713/176, 713/180, 726/5, 726/6, 726/7, 726/10, 380247-250
• US Class Current: 726/10
• CPC Class Codes: G01S 19/05 providing aiding data
• CPC Class Codes: G01S 19/09 providing processing capability normally carried out by the receiver
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: H04L 2209/80 Wireless
• CPC Class Codes: H04L 2209/84 Vehicles
• CPC Class Codes: H04L 63/0407 wherein the identity of one or more communicating identities is hidden cryptographic mechanisms or cryptographic arrangements for anonymous credentials or for identity based cryptographic systems H04L9/00
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/0807 using tickets, e.g. Kerberos cryptographic mechanisms or cryptographic arrangements for entity authentication using tickets or tokens H04L9/3213
• CPC Class Codes: H04L 9/3247 involving digital signatures
• CPC Class Codes: H04W 12/02 Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 12/03 Protecting confidentiality, e.g. by encryption
• CPC Class Codes: H04W 12/068 using credential vaults, e.g. password manager applications or one time password [OTP] applications

Abstract

When transmitting position/time information calculated by means of a GPS function to a server apparatus, authentication is carried out with the server apparatus. The position/time information may be certified as legitimate measured by a portable apparatus with a GPS reception function employed by a user. When transmitting information related to the position and the time acquired from a portable phone terminal having the GPS function and a network function by means of the GPS function to the server apparatus, authentication is carried out between the portable phone terminal and the server apparatus. The position/time information is transmitted to the server apparatus, only if the server apparatus is authenticated as a legitimate counterpart for connection. A secret key holding section is provided for holding different secret keys for different apparatuses. The position/time information measured based on an electromagnetic wave received from a positioning satellite is digitally signed by means of the secret key. The identification information and the position/time information having the digital signature are then transmitted to a counterpart.

Claims

1. An apparatus comprising:

a secret key holding section for holding a secret key for the apparatus;

an identification information holding section for holding identification information of an apparatus or identification information of a user of said apparatus;

a digital signature means for providing a digital signature of a position/time information indicating position and time of reception of a signal received from a positioning satellite, by means of said secret key held in said secret key holding section;

a communication means for transmitting to a communication counterpart said identification information held in said identification information holding section and said position/time information having said digital signature attached thereto, said communication means also receiving position/time information having a digital signature attached thereto from another apparatus transmitting communication data input by another user to the apparatus; and

display means for displaying position information of the another apparatus when the apparatus is receiving the data input by the another user from the another apparatus.

2. The apparatus according to claim 1, further comprising:

a public key holding section for holding a public key of the communication counterpart for notification of said position/time information; and

an encryption means for encrypting said position/time information prior to said digital signature by means of said public key of said communication counterpart.

3. The apparatus according to claim 1, further comprising:

a public key holding section for holding a public key of said communication counterpart; and

an encryption means for encrypting said position/time information having said digital signature attached thereto by means of the public key of said communication counterpart.

13. The apparatus according to claim 1, wherein the display means displays the location of the another apparatus on a map.

21. The apparatus according to claim 1, wherein the communication means receives voice data input by the another user from the another apparatus.

4. An apparatus comprising:

a secret key holding section for holding a secret key for the apparatus;

an identification information holding section for holding identification information of an apparatus or identification information of a user of said apparatus;

a digital signature means for providing a digital signature for a position/time information indicating position and time of reception of a signal received from a positioning satellite, by means of said secret key held in said secret key holding section;

a storage means for storing in externally readable form said position/time information having said digital signature attached thereto;

communication means for receiving position/time information having a digital signature attached thereto from another apparatus transmitting communication data input by another user to the apparatus; and

display means for displaying the position information of the another apparatus when the apparatus is receiving the data input by the another user from the another apparatus.

5. The apparatus according to claim 4, further comprising:

a public key holding section for holding a public key of the communication counterpart for notification of said position/time information; and

an encryption means for encrypting said position/time information prior to said digital signature by means of said public key of said communication counterpart.

6. The apparatus according to claim 4, further comprising:

a public key holding section for holding a public key of said communication counterpart; and

an encryption means for encrypting said position/time information having said digital signature attached thereto by means of the public key of said communication counterpart.

14. The apparatus according to claim 4, wherein the display means displays the location of the another apparatus on a map.

7. An apparatus comprising:

an IC card mounting section for mounting an IC card;

a means for providing said IC card with position/time information measured based on a signal received from a positioning satellite, the position/time information indicating position and time of reception of said signal; and

a communication means for transmitting to a communication counterpart an IC card user identification information held in said IC card and said position/time information from said IC card, having a digital signature attached thereto, said communication means also receiving position/time information having a digital signature attached thereto from another apparatus transmitting communication data input by another user to the apparatus; and

display means for displaying position information of the another apparatus when the apparatus is receiving the data input by the another user from the another apparatus.

8. The apparatus according to claim 7, wherein:

data having said digital signature attached to said position/time information encrypted is outputted from said IC card by means of a public key of said communication counterpart; and

said communication means transmits said encrypted position/time information having said digital signature attached thereto to said communication counterpart.

9. The apparatus according to claim 7, wherein

said position/time information having said digital signature attached thereto and encrypted by means of the public key of said communication counterpart is outputted from said IC card;

and

said communication means transmits said encrypted information from said IC card to said communication counterpart.

15. The apparatus according to claim 7, wherein the display means displays the location of the another apparatus on a map.

10. An apparatus comprising:

an IC card mounting section for mounting an IC card;

a means for providing said IC card with position/time information measured based on a signal received from a positioning satellite, the position/time information indicating position and time of reception of said signal; and

a storage means for storing in externally readable form an IC card user identification information held in said IC card and said position/time information from said IC card, having a digital signature attached thereto;

communication means for receiving position/time information having a digital signature attached thereto from another apparatus transmitting communication data input by another user to the apparatus; and

display means for displaying the position information of the another apparatus when the apparatus is receiving the data input by the another user from the another apparatus.

11. The apparatus according to claim 10, wherein

data having said digital signature attached to said position/time information encrypted is outputted from said IC card by means of the public key of said communication counterpart;

and

said encrypted position/time information from said IC card, having said digital signature attached thereto is stored in said storage section.

12. The apparatus according to claim 10, wherein

said position/time information having said digital signature attached thereto and encrypted by means of the public key of said communication counterpart is outputted from said IC card;

and

said encrypted information from said IC card is stored in said storage section.

16. The apparatus according to claim 10, wherein the display means displays the location of the another apparatus on a map.

17. An apparatus comprising:

a secret key holding unit configured to hold a secret key for the apparatus;

an identification information holding unit configured to hold identification information of the apparatus or identification information of a user of said apparatus;

a digital signature unit configured to provide a digital signature of a position/time information indicating position and time of reception of a signal received from a positioning satellite by using said secret key held in said secret key holding unit;

a communication unit configured to transmit to a communication counterpart said identification information held in said identification information holding unit and said position/time information having said digital signature attached thereto, said communication unit configured to receive position/time information having a digital signature attached thereto from another apparatus transmitting communication data input by another user to the apparatus; and

a display configured to display the position information of the another apparatus when the apparatus is receiving the data input by the another user from the another apparatus.

20. The apparatus according to claim 17, wherein the display is configured to display the location of the another apparatus on a map along with an indicator identifying the another apparatus.

18. A method comprising:

storing a secret key for an apparatus;

storing identification information of the apparatus or identification information of a user of the apparatus;

providing, using a processor, a digital signature of a position/time information indicating position and time of reception of a signal received from a positioning satellite by using said secret key;

transmitting to a communication counterpart said identification information and said position/time information having said digital signature attached thereto;

receiving position/time information having a digital signature attached thereto from another apparatus transmitting communication data input by another user to the apparatus; and

displaying the position information of the another apparatus when the apparatus is receiving the data input by the another user from the another apparatus.

19. An information communication system comprising:

a first information terminal apparatus including

a secret key holding unit configured to hold a secret key for the first information terminal apparatus;

an identification information holding unit configured to hold identification information of the first information terminal apparatus or identification information of a user of said first information terminal apparatus;

a digital signature unit configured to provide a digital signature of a position/time information indicating position and time of reception of a signal received from a positioning satellite by using said secret key held in said secret key holding unit;

a communication unit configured to transmit to a second information terminal apparatus said identification information held in said identification information holding unit and said position/time information having said digital signature attached thereto, said communication unit configured to receive position/time information having a digital signature attached thereto from the second information terminal apparatus transmitting communication data input by another user to the first information terminal apparatus; and

a display configured to display the position information of the second information terminal apparatus when the first information terminal apparatus is receiving the data input by the another user from the second information terminal apparatus; and

the second information terminal apparatus includes a communication unit configured to receive said identification information held and said position/time information having said digital signature attached thereto from the first information terminal apparatus, said communication unit configured to send the position/time information having the digital signature attached thereto to the first information terminal apparatus.