A routing method and device
A routing, legitimate technology used in security devices, secure communication devices, key distribution
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[0034] First of all, some nouns involved in the embodiments of this application are explained:
[0035] 1. eSIM and eUICC
[0036] The eSIM card is to embed the traditional SIM card directly on the device chip, instead of adding it to the device as an independent removable part, and the user does not need to insert a physical SIM card. The eSIM card will allow users to choose operator packages more flexibly, or change operators at any time without unlocking the device or purchasing a new device. Embedded Universal Integrated Circuit Card (eUICC), eUICC is the physical form of eSIM card.
[0037] 2. Digital certificate
[0038] Such as figure 1 As shown, digital certificates include: CI root certificate (level 1 certificate), EUM certificate (level 2 certificate), SM-SR certificate (level 2 certificate), eUICC certificate (level 3 certificate). The CI root certificate is issued by a certificate authority (Certificate Authority, CA), the EUM certificate, SM-SR certificate an...
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