SUBSCRIBER SUBSCRIPTION CONCEALED IDENTIFIER Russian patent published in 2020 - IPC H04L29/06 H04W12/04 

FIELD: data processing.

SUBSTANCE: invention relates to maintaining confidentiality of a long-term user equipment subscription identifier. Method comprises steps of: receiving a subscriber subscription concealed identifier (SUCI), comprising an encrypted part, in which at least part of subscriber subscription permanent identifier (SUPI) is encrypted, and a part with unencrypted text which contains a home network identifier and an encryption scheme identifier which identifies an encryption scheme used by the UE to encrypt the SUPI in the SUCI; determining a decryption server to be used to decrypt the encrypted portion of the SUCI; sending SUCI to decryption server and receiving SUPI in response.

EFFECT: technical result of the invention is to ensure security when interacting between UE and a communication network.

17 cl, 22 dwg