Cable modem anti-cloning
US11387996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2020 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Nov 23, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3226
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and computer readable media can be operable to facilitate the encryption of a device identifier using an identification property of a Soc. A unique identifier of a cable modem may be encrypted using a unique key or other unique property of a SoC associated with the cable modem. When an authentication process is initiated at the cable modem, the encrypted unique identifier of the cable modem may be decrypted using the unique key or other unique property of the SoC, thereby producing the unique identifier of the cable modem. The decrypted unique identifier of the cable modem may be output from the cable modem to an upstream controller during the authentication process. In embodiments, an obfuscation key may be used to encrypt and decrypt the unique identifier of the cable modem, and the obfuscation key may be generated using a unique identifier of the SoC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.