INFORMATION DISTRIBUTION METHOD, INFORMATION DISTRIBUTION SYSTEM AND IN-VEHICLE TERMINAL

• US 20130179689A1
• Filed: 12/21/2012
• Published: 07/11/2013
• Est. Priority Date: 01/10/2012
• Status: Active Grant

• Current Assignee: Clarion Co., Ltd. (Faurecia SA)
• Original Assignee: Clarion Co., Ltd. (Faurecia SA)
• Inventors: MATSUMOTO, Takashi, SHIMIZU, Atsushi, UMEZAWA, Katsuyuki, OSAFUNE, Tatsuaki, MITSUI, Koichi, ENDO, Hiroyoshi
• Granted Patent: US 9,515,829 B2
• Time in Patent Office: Days
• US Class Current: 713/171
• CPC Class Codes: G06F 8/61 Installation
• CPC Class Codes: H04L 9/08 Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords network architectures or network communication protocols for supporting key management in a packet data network H04L63/06
• CPC Class Codes: H04L 9/32 including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
• CPC Class Codes: H04W 12/02 Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 12/033 of the user plane, e.g. user's traffic
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 4/48 for in-vehicle communication
• CPC Class Codes: H04W 4/50 Service provisioning or reconfiguring

Abstract

[Objective] When installing software into an in-vehicle terminal from a server, it is required to prevent the software from being installed into an unsuitable terminal, and to reduce time and efforts for data input and download, thereby improving the convenience of the user.

[Solution] In an information distribution system, terminal identification information and a terminal unique key for an in-vehicle terminal are stored in a server as well as in itself. The in-vehicle terminal transmits the terminal identification information to the server for terminal authentication via a communication terminal after encrypting with the terminal unique key, and then the server transmits encrypted software to the communication terminal. The communication terminal transmits the encrypted software to the in-vehicle terminal, which in turn obtains a software unique key encrypted with the terminal unique key from the server and decrypts the encrypted software for installation using the software unique key.

Claims

1. An information distribution method using an information distribution system, for one or more in-vehicle terminals connected with a communication terminal via a terminal-to-terminal communication, to distribute software applicable to each of the in-vehicle terminals via the communication terminal, from a server connected via the communication terminal, wherein

the in-vehicle terminal is provided with a feature to store terminal unique terminal identification information and a terminal unique key therein, and

the server is provided with features to store therein a server-side terminal identification information and a server-side terminal unique key that are same as the terminal identification information and the terminal unique key stored individually in each of the in-vehicle terminals, and to store therein encrypted software of a software program that is individually applicable to each of the in-vehicle terminals and software unique keys that are used for encrypting each of the software,

the method comprising:

a step, performed by the in-vehicle terminal, of transmitting the terminal identification information to the server via the communication terminal;

a step, performed by the server, of transmitting the encrypted software to the in-vehicle terminal via the communication terminal, by transmitting the encrypted software applicable to the in-vehicle terminal specified in the terminal identification information and identification information of the encrypted software to the communication terminal, when terminal authentication for the in-vehicle terminal is successful by verifying the received terminal identification information based on the server-side terminal identification information; and

a step, performed by the in-vehicle terminal, of acquiring the encrypted software and installing therein.

2. The information distribution method according to claim 1,

wherein the method further comprising:

a step, performed by the communication terminal, of saving the terminal identification information therein, after the server transmitting the encrypted software applicable to the in-vehicle terminal specified in the terminal identification information and identification information of the encrypted software to the communication terminal when terminal authentication for the in-vehicle terminal is successful by verifying the received terminal identification information based on the server-side terminal identification information.

3. The information distribution method according to claim 2,

wherein the method further comprising:

a step, performed by the communication terminal, of transmitting the terminal identification information saved therein to the server when the in-vehicle terminal acquires the encrypted software;

a step, performed by the server, of transmitting the encrypted software to the in-vehicle terminal via the communication terminal, by transmitting the encrypted software applicable to the in-vehicle terminal specified in the terminal identification information and identification information of the encrypted software to the communication terminal, when terminal authentication for the in-vehicle terminal is successful by verifying the terminal identification information received from the communication terminal based on the server-side terminal identification information; and

a step, performed by the in-vehicle terminal, of acquiring the encrypted software and installing therein.

4. The information distribution method according to claim 1,

wherein the method further comprising:

a step, performed by the in-vehicle terminal, of transmitting the identification information of the encrypted software added to the encrypted software to the server via the communication terminal;

a step, performed by the server, of obtaining the software unique key used for encrypting the software, based on the identification information of the encrypted software received from the in-vehicle terminal;

a step, performed by the server, of generating an authentication information for the software unique key and transmitting to the in-vehicle terminal via the communication terminal; and

a step, performed by the in-vehicle terminal, of decrypting the encrypted software stored therein and installing the decrypted software when authentication for the software unique key is successful by verifying the received authentication information for the software unique key.

5. The information distribution method according to claim 1, in case of the in-vehicle terminal being a second in-vehicle terminal different from the in-vehicle terminal that transmitted the terminal identification information to the server via the communication terminal,

wherein the method further comprising:

a step, performed by the server, of determining whether or not the software corresponding to the obtained software unique key is applicable to the second in-vehicle terminal, after the step to obtain the software unique key used for encrypting the software;

a step, performed by the server, of generating authentication information for the software unique key and transmitting to the second in-vehicle terminal via the communication terminal, when the software is determined to be applicable to the second in-vehicle terminal; and

a step, performed by the server, of obtaining an encrypted software applicable to the second in-vehicle terminal and transmitting to the second in-vehicle terminal via the communication terminal, by adding identification information of the encrypted software, when the software is determined not to be applicable to the second in-vehicle terminal.

6. An information distribution system, for one or more in-vehicle terminals connected with a communication terminal via a terminal-to-terminal communication, to distribute software applicable to each of the in-vehicle terminals via the communication terminal, from a server connected via the communication terminal,

the system comprising:

one or more in-vehicle terminals;

a communication terminal; and

a server, wherein

each of the in-vehicle terminals is provided with a feature to store terminal unique terminal identification information and a terminal unique key therein, and performs to;

transmit the terminal identification information to the server via the communication terminal;

acquire encrypted software and store therein;

transmit an identification information of an encrypted software, added to the encrypted software, to the server via the communication terminal; and

decrypt the encrypted software stored therein and install the decrypted software, when authentication for a software unique key is successful by verifying a received authentication information for the software unique key, and

the server is provided with features to store therein a server-side terminal identification information and a server-side terminal unique key that are same as the terminal identification information and the terminal unique key stored individually in each of the in-vehicle terminals, and to store therein encrypted software of a software program that is individually applicable to each of the in-vehicle terminals and software unique keys that are used for encrypting each of the software, and performs to;

transmit the encrypted software to the in-vehicle terminal via the communication terminal, by transmitting the encrypted software applicable to the in-vehicle terminal specified in the terminal identification information and identification information of the encrypted software to the communication terminal, when terminal authentication for the in-vehicle terminal is successful by verifying the received terminal identification information based on the server-side terminal identification information;

transmit an identification information of an encrypted software, attached to the encrypted software, to the server, via the communication terminal; and

decrypt the encrypted software stored therein and install the decrypted software, when authentication for a software unique key is successful at verifying a received authentication information for the software unique key, and

the server is provided with features to store therein a server-side terminal identification information and a server-side terminal unique key that are same as the terminal identification information and the terminal unique key stored individually in each of the in-vehicle terminals, and to store therein individually the encrypted software of the software that are applicable to each of the in-vehicle terminals and the software unique keys that are used for encrypting each of the software, and performs to;

transmit the encrypted software applicable to the in-vehicle terminal specified in the terminal identification information, by attaching identification information of the encrypted software, to the in-vehicle terminal, via the communication terminal, when terminal authentication for the in-vehicle terminal is successful at verifying the received terminal identification information based on the server-side terminal identification information;

obtain the software unique key used for encrypting the software, based on the identification information of the encrypted software received from the in-vehicle terminal; and

generate an authentication information for the software unique key and transmit to the in-vehicle terminal, via the communication terminal.

7. The information distribution system according to claim 6, wherein, in case of the in-vehicle terminal being a second in-vehicle terminal different from the in-vehicle terminal that transmitted the terminal identification information to the server via the communication terminal,

the server performs to:

determine whether or not the software corresponding to the obtained software unique key is applicable to the second in-vehicle terminal, after obtaining the software unique key used for encrypting the software;

generate authentication information for the software unique key and transmit to the second in-vehicle terminal via the communication terminal, when the software is determined to be applicable to the second in-vehicle terminal; and

obtain an encrypted software applicable to the second in-vehicle terminal and transmit to the second in-vehicle terminal via the communication terminal, by adding identification information of the encrypted software, when the software is determined not to be applicable to the second in-vehicle terminal.

8. An in-vehicle terminal connected with a communication terminal via a terminal-to-terminal communication, in the information distribution system, for distributing software applicable to the in-vehicle terminal via the communication terminal from a server connected via the communication terminal,

wherein the in-vehicle terminal is provided with features to:

store terminal unique terminal identification information and a terminal unique key therein;

transmit the terminal identification information to the server via the communication terminal; and

acquire encrypted software that is encrypted by the server and applicable to the in-vehicle terminal, then store therein,

and comprises;

an authentication information generating section for transmitting the identification information of the encrypted software added to the encrypted software to the server via the communication terminal; and

an authentication information verifying section for verifying software unique key authentication information received from the server via the communication terminal.