- Patent Title: Electronic subscriber identity module transfer credential wrapping
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Application No.: US17820236Application Date: 2022-08-16
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Publication No.: US11736273B2Publication Date: 2023-08-22
- Inventor: Xiangying Yang , Jean-Marc Padova
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Dickinson Wright RLLP
- Main IPC: H04L29/06
- IPC: H04L29/06 ; G06F21/00 ; H04L9/08 ; H04L9/30 ; H04W12/72 ; H04W12/037

Abstract:
Embodiments described herein relate to credential wrapping for secure transfer of electronic SIMs (eSIMs) between wireless devices. Transfer of an eSIM from a source device to a target device includes re-encryption of sensitive eSIM data, e.g., eSIM encryption keys, financial transaction credentials, transit authority credentials, and the like, using new encryption keys that include ephemeral elements applicable to a single, particular transfer session between the source device and the target device. The sensitive eSIM data encrypted with a symmetric key (Ks) is re-wrapped with a new header that includes a version of Ks encrypted with a new key encryption key (KEK) and information to derive KEK by the target device. The re-encrypted sensitive SIM data is formatted with additional eSIM data into a new bound profile package (BPP) to transfer the eSIM from the source device to the target device.
Public/Granted literature
- US20220399993A1 ELECTRONIC SUBSCRIBER IDENTITY MODULE TRANSFER CREDENTIAL WRAPPING Public/Granted day:2022-12-15
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