Methods, apparatus, and systems for securing SIM (subscriber identity module) personalization and other data on a first processor and secure communication of the SIM data to a second processor
US7940932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2005 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Mar 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An electronic circuit 120 includes a more-secure processor (600) having hardware based security (138) for storing data. A less-secure processor (200) eventually utilizes the data. By a data transfer request-response arrangement (2010, 2050, 2070, 2090) between the more-secure processor (600) and the less-secure processor (200), the more-secure processor (600) confers greater security of the data on the less-secure processor (200). A manufacturing process makes a handheld device (110) having a storage space (222), a less-secure processor (200) for executing modem software and a more-secure processor (600) having a protected application (2090) and a secure storage (2210). A manufacturing process involves generating a per-device private key and public key pair, storing the private key in a secure storage (2210) where it can be accessed by the protected application (2090), combining the public key with the modem software to produce a combined software, signing the combined software; and storing the signed combined software into the storage space (222). Other processes of manufacture, processes of operation, circuits, devices, wireless and wireline communications products, wireless hand…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.