Method and system for exchanging cryptographic keys with an unauthenticated device
US10637652B2 · kind B2 · utility
0Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2019 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | May 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/77
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present teaching relates to exchanging a key with a device. In one example, a secret value is generated. A message is transmitted to the device. The message includes information related to the secret value based on which the device is to create a cryptographic key. A visual code displayed on the device is captured. The visual code includes a first piece of information and a second piece of information. A key value is generated based on the first piece of information and the secret value. A test value is calculated based on the key value. It is determined whether the device is securely connected based on the test value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.