Method and device for transmitting software
US10404718B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2016 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Nov 13, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0428
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for transmitting software in which a checker generates two random numbers. The checker calculates a cryptographic key based on the second random number based on a measured hardware function of the device. The checker encrypts the software into a cryptogram using the key, and transmits the cryptogram to the device. The checker transmits the first random number to the device, and receives a checksum from the device. The checker calculates a reference value based on the first random number and an emulated random access memory of the device, with the aid of the measured hardware function and a predefined cryptographic hash function. The checker subjects the checksum to a check based on the reference value, and if the check is successful, the checker transmits the second random number to the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.