METHOD FOR COMMUNICATION BETWEEN DEVICES AND DEVICES THEREOF

• US 20180227279A1
• Filed: 07/18/2016
• Published: 08/09/2018
• Est. Priority Date: 07/29/2015
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Se-il, KIM, Dong-chan, HUH, Mi-suk
• Granted Patent: US 10,771,244 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 2209/80 Wireless network architectures or network communication protocols for wireless network security H04W12/00
• CPC Class Codes: H04L 63/0442 wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption cryptographic mechanisms or cryptographic arrangements for public-key encryption H04L9/30
• CPC Class Codes: H04L 63/06 for supporting key management in a packet data network cryptographic mechanisms or cryptographic arrangements for key management H04L9/08
• CPC Class Codes: H04L 63/061 for key exchange, e.g. in peer-to-peer networks cryptographic mechanisms or cryptographic arrangements for key agreement H04L9/0838
• CPC Class Codes: H04L 9/0825 using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
• CPC Class Codes: H04L 9/0869 involving random numbers or seeds
• CPC Class Codes: H04L 9/14 using a plurality of keys or algorithms
• CPC Class Codes: H04W 12/033 of the user plane, e.g. user's traffic
• CPC Class Codes: H04W 12/041 Key generation or derivation
• CPC Class Codes: H04W 12/0433 Key management protocols
• CPC Class Codes: H04W 12/069 using certificates or pre-shared keys
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Abstract

Disclosed is a method of performing, by a first device, short-range wireless communication with a second device, the method including receiving, from the second device, second authentication information encrypted using first authentication information of the first device, decrypting the encrypted second authentication information by using the first authentication information, determining a secret key based on the decrypted second authentication information, and performing communication between the first device and the second device by using the determined secret key.

Claims

1. A method of performing, by a first device, short-range wireless communication with a second device, the method comprising:

receiving, from the second device, second authentication information encrypted using first authentication information of the first device;

decrypting the encrypted second authentication information by using the first authentication information;

determining a secret key based on the decrypted second authentication information; and

performing communication between the first device and the second device by using the determined secret key.

14. A computer-readable recording medium having recorded thereon a program for executing the method of claim 1 on a computer.

2. (canceled)

3. A first device for performing short-range wireless communication with a second device, the first device comprising:

a communication unit configured to receive, from the second device, second authentication information encrypted using first authentication information; and

a processor configured to decrypt the encrypted second authentication information by using the first authentication information, and determine a secret key based on the decrypted second authentication information,

wherein the communication unit is further configured to perform communication between the first device and the second device by using the determined secret key.

4. The first device of claim 3, wherein the first authentication information and the second authentication information comprise a first public key generated by the first device and a second public key generated by the second device, respectively, and

wherein the communication unit is further configured to transmit the first public key to the second device.

5. The first device of claim 4, wherein the processor is further configured to generate the first public key by using a random number.

6. The first device of claim 3, wherein the communication unit is further configured to receive identification information of the second device together with the encrypted second authentication information.

7. The first device of claim 3, wherein the second authentication information comprises security information generated by the second device, and

wherein the processor is further configured to select at least one of a plurality of secret keys comprised in the decrypted security information.

8. The first device of claim 3, wherein the processor is further configured to establish an encrypted communication channel between the first device and the second device by using the determined secret key.

9. A second device for performing short-range wireless communication with a first device, the second device comprising:

a communication unit configured to receive first authentication information from the first device; and

a processor configured to encrypt second authentication information based on the received first authentication information,

wherein the communication unit is further configured to transmit the encrypted second authentication information to the first device and perform communication between the first device and the second device as the encrypted second authentication information is decrypted by the first device.

10. The second device of claim 9, wherein the communication unit is further configured to receive a first public key generated by the first device, and

wherein the processor is further configured to encrypt a second public key by using the received first public key.

11. The second device of claim 9, wherein the communication unit is further configured to receive identification information of the first device together with the first authentication information.

12. The second device of claim 9, wherein the second authentication information comprises a plurality of secret keys,

wherein the communication unit is further configured to receive at least one secret key selected by the first device, and

wherein the processor is further configured to determine whether the received at least one secret key is comprised in the plurality of secret keys.

13. The second device of claim 9, wherein the processor is further configured to establish an encrypted communication channel between the first device and the second device by using the determined secret key.