L.5 Storage of certificates

31.1023GPPCharacteristics of the Universal Subscriber Identity Module (USIM) applicationRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

If the UICC supports the certificate based procedure, the UICC shall be provisioned with the UICC certificate and the root certificate. The UICC certificate, which is used as a server certificate in the TLS handshake, is stored in EF_CERT in USIM-INI as it needs to be accessed by the RN for reading the CRL distribution point before establishing the secure channel, for details cf. TS 33.401 [52]. The root certificate, which is used to verify the RN certificate in the TLS handshake, is only needed for UICC-internal purposes and need not be stored in an EF.