Abstract: The invention relates to a method for setting up a subscription profile in a subscriber identity module, preferably an embedded UICC, wherein the following method steps take place in the subscriber identity module: receiving a subscription profile encrypted with a cryptographic key of a subscription server, wherein the cryptographic key for decrypting the subscription profile is unknown to the subscriber identity module at the time of receiving; storing the encrypted subscription profile without decrypting the subscription profile; receiving the cryptographic key at a time after the storing step; decrypting the encrypted subscription profile with the cryptographic key; and installing the decrypted subscription profile to set up the subscription profile in the subscriber identity module. The invention also relates to a corresponding method in a subscription server, a subscriber identity module, and a computer program product.
Type:
Grant
Filed:
May 19, 2020
Date of Patent:
October 8, 2024
Assignee:
GIESECK+DEVRIENT MOBILE SECURITY GERMANY GMBH