Integrated circuit configured to carry out symmetric encryption operations without secret key transmission
US11610025B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 28, 2021 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | May 30, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An integrated circuit includes a secure hardware environment having a first input that receives a key number. A key generation device generates a secret key from the key number and a unique key. A signature generation device generates a signature associated with the key number. A second input of the secure hardware environment receives encrypted binary data. A decryption device operates to decrypt the received encrypted binary data using the secret key. A third input the secure hardware environment receives an authentication signature. An authentication device authorizes use of the secret key to decrypt only if the signature generated by the signature generation device is identical to the authentication signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.