5G Security


BY – Shubham Kumar Source: https://www.etsi.org/deliver/etsi_ts/133100_133199/133102/11.05.01_60/ts_133102v110501p.pdf Section 3.2 Generating 5G Authentication Vectors Source: https://github.com/magma/magma/blob/6122b3a667ba8e0c29dda827261904c1efc963ed/lte/gateway/python/magma/subscriberdb/crypto/milenage.py#L56 Generating SQN Source: https://www.etsi.org/deliver/etsi_ts/133100_133199/133102/11.05.01_60/ts_133102v110501p.pdf Section: C.3.2, C.1.1.2 C.1.1.1 Source: https://github.com/magma/magma/blob/master/lte/gateway/python/magma/subscriberdb/processor.py#L323 Generating RAND Source: https://github.com/magma/magma/blob/6122b3a667ba8e0c29dda827261904c1efc963ed/lte/gateway/python/magma/subscriberdb/crypto/milenage.py#L292 Generating OPc OPc(​Derived operator code unique for each SIM) is derived from OP(Operator Code) and K(Secret Key). OP and K are first encrypted using AES-128 Encryption Algorithm …


ECIES in 5G Core: SUPI to SUCI Conversion

BY – Aditya Koranga SUPI stands for Subscription Permanent Identifier, a permanent unique identifier assigned to each sim card for the identity of a subscriber. In 4G it was called IMSI(International Mobile Subscriber Identity). SUPI is a 15 or 16 digits string that contains MCC(Mobile Country Code), MNC(Mobile Network Code), and MSIN(Mobile Subscriber Identification Number). …

ECIES in 5G Core: SUPI to SUCI Conversion Read More »

AKA Procedure

BY SHUBHAM KUMAR If the UE(User Equipment) is previously registered with the network, it will have a temporary identifier, 5G-GUTI(5G- Global Unique Temporary Identifier) stored in it. The UE will use this identifier for the Identification procedure. The 5G-GUTI is sent to the SEAF(Security Anchor Function) in the logical N1 interface where SUPI(Subscription Permanent Identifier) …

AKA Procedure Read More »