INFORMATION TERMINAL APPARATUS, INFORMATION PROCESSING APPARATUS AND INFORMATION COMMUNICATION SYSTEM

• US 20080284648A1
• Filed: 05/28/2008
• Published: 11/20/2008
• Est. Priority Date: 06/26/2002
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takada, Masayuki, Muto, Takayasu
• Granted Patent: US 8,489,881 B2
• Time in Patent Office: Days
• US Class Current: 342/357.09
• 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. A method of transmitting position/time information comprising:

a positioning step of receiving an electromagnetic wave from a positioning satellite and measuring a reception position and time;

a digital signature step of providing a digital signature of position/time information indicating said reception position and time acquired in said positioning step by means of a secret key;

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

a transmission step of transmitting identification information of an apparatus or identification information of a user of said apparatus to said communication counterpart in one of prior, after and at time of transmission of said position/time information.

2. The method of transmitting position/time information according to claim 1, further comprising an encryption step of encrypting said position/time information prior to said digital signature step by means of a public key of said communication counterpart;

wherein

said position/time information transmitted to said communication counterpart in said communication step is encrypted.

3. The method of transmitting position/time information according to claim 1, further comprising an encryption step of encrypting said position/time information having attached said digital signature thereto by means of a public key of said communication counterpart held in said public key holding section, said encryption step provided between said digital signature step and said communication step.