Providing apparatus, communication device, method, and program

• US 7,542,573 B2
• Filed: 05/23/2005
• Issued: 06/02/2009
• Est. Priority Date: 06/04/2004
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Ogawa, Katsuhisa, Suzuki, Naohiko, Nakazawa, Hiroaki
• Primary Examiner(s): Dinh; Minh
• Application Number:
  US11/135,156
• Publication Number:
  US 20050273595A1
• Time in Patent Office: 1,471 Days
• Field of Search: 380/279
• US Class Current: 380/279
• CPC Class Codes: G06F 21/608 Secure printing
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/20 for managing network security; network security policies in general filtering policies H04L63/0227

Abstract

A providing apparatus provides information required for secure communication to first and second devices. The providing apparatus includes a receiving unit that receives a first parameter used by the first device for the secure communication and a second parameter used by the second device for the secure communication from a connection apparatus via which the first device is connected to the second device, a generating unit that generates the information required for the secure communication based on the parameters received from the connection apparatus, and a transmitting unit that transmits the information required for the secure communication, generated by the generating unit, to the first and second devices.

Claims

1. A providing apparatus that provides information required for secure communication to first and second devices, the providing apparatus comprising:

a storage medium for storing a computer program for providing the information required for secure information to the first and second devices, the computer program providing for;

a receiving unit that receives, from a connection apparatus for connecting a first device and the second device, a plurality of messages transmitted from the first device and the second device for establishing a session between the first device and the second device;

an extracting unit that extracts a first parameter used by the first device for the secure communication and a second parameter used by the second device for the secure communication from the plurality of messages;

a generating unit that generates the information required for the secure communication based on the parameters extracted from the plurality of messages; and

a transmitting unit that transmits the information required for the secure communication, generated by the generating unit, to the first and second devices,

wherein the receiving unit receives the plurality of messages including a first message transmitted from the first device for establishing a session with the second device and a second message indicating that the second device accepts the first message.

2. The providing apparatus according to claim 1,

wherein the parameters for the secure communication are parameters used for determining whether authentication or encryption is required to ensure the secure communication is performed.

3. The providing apparatus according to claim 2,

wherein the information required for the secure communication, or the information required to ensure the secure communication, is an authentication algorithm or an encryption algorithm required to ensure the secure communication.

4. The providing apparatus according to claim 2,

wherein the information required for the secure communication, or the information required to ensure the secure communication, is a key required to ensure the secure communication.

10. The providing apparatus according to claim 1, wherein the receiving unit receives the plurality of messages including the first message transmitted from the first device for establishing a session with the second device, the second message indicating that the second device accepts the first message, and a third message indicating that the first device receives the second message.

11. The providing apparatus according to claim 10, wherein the transmitting unit transmits the information after the receiving unit received the third message from the connection apparatus.

5. A storage medium for storing a computer program of providing information required for secure communication to first and second devices, the computer program comprising instructions for:

receiving, from a connection apparatus for connecting the first device and the second device, a plurality of messages transmitted from the first device and the second device for establishing a session between the first device and the second device;

extracting a first parameter used by the first device for the secure communication and a second parameter used by the second device for the secure communication from the plurality of messages;

generating the information required for the secure communication based on the parameters extracted from the plurality of messages; and

transmitting the generated information required for the secure communication to the first and second devices,

wherein the plurality of messages includes a first message transmitted from the first device for establishing a session with the second device, and a second message indicating that the second device accepts the first message.

12. The storage medium according to claim 5, wherein the plurality of messages includes the first message transmitted from the first device for establishing a session with the second device the second message indicating that the second device accepts the first message, and a third message indicating that the first device receives the second message.

6. A providing method in which a providing apparatus provides information required for secure communication to first and second devices, the providing method comprising:

transferring to the providing apparatus, by a connection apparatus for connecting the first device and the second device, a plurality of messages transmitted from the first device and the second device for establishing a session between the first device and the second device;

extracting, by the providing apparatus, a first parameter used by the first device for the secure communication and device and a second parameter used by the second device for the secure communication from the plurality of messages;

generating, by the providing apparatus, the information required for the secure communication based on the parameters extracted from the plurality of messages; and

transmitting the generated information to the first and second devices, by the providing apparatus,

wherein the plurality of messages transferred by the connection apparatus includes a first message transmitted from the first device for establishing a session with the second device and a second message indicating that the second device accepts the first message.

7. The providing method according to claim 6,

wherein the parameters for the secure communication are parameters used for determining whether authentication or encryption required to ensure the secure communication is performed.

8. The providing method according to claim 7,

wherein the information required for the secure communication, or the information required to ensure the secure communication, is an authentication algorithm or an encryption algorithm required to ensure the secure communication.

9. The providing method according to claim 7,

wherein the information required for the secure communication, or the information required to ensure the secure communication, is a key required to ensure the secure communication.

13. The providing method according to claim 6, wherein the plurality of messages transferred by the connection apparatus includes the first message transmitted from the first device for establishing a session with the second device, the second message indicating that the second device accepts the first message, and a third message indicating that the first device receives the second message.

14. The providing method according to claim 13, wherein the generated information is transmitted after the proving apparatus received the third message transferred by the connection apparatus.