Secure electronic subscriber identity module (eSIM) restoration
US10356614B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2016 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Mar 13, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/069
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A secure element uses a backup context to restore a deleted electronic Subscriber Identity Module (eSIM) without compromising a trust relationship with a mobile network operator (MNO). A backup copy of a data binary large object (data blob) originally used to instantiate the eSIM is retrieved. The secure element determines if the eSIM within the data blob is uniquely associated with the secure element from a previous installation. The secure element examines the data blob to determine an identifier unique to the eSIM. The identifier can be an integrated circuit card identifier (ICC-ID) or a profile identifier. The secure element searches a table of instantiated eSIMs in the secure memory. If the secure element is able to match the recovered eSIM identifier with an entry in the table, then the secure element installs this eSIM in the secure element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.