RUSIM OS: an inline operating system for SIM cards

The software is designed to manage the subscriber identification module (SIM-card) of the GSM mobile communication network of the second (2G), third (3G), fourth (4G/LTE), and fifth (5G) generation. The software provides the following functions: managing the internal memory of the SIM card microcontroller, implementation of the communication protocol T=0 and T=1 according to GOST R ISO/IEC 7816-3/4, standard 2G commands according to GSM 11.11, implementation of the mechanisms for the mobile phone operation with a smart card in terms of communication, administration, security according to the ETSI TS 102 xxx standard series, implementation of the security architecture in the GSM 3G network according to ETSI TS 133 102 standard, authentication in the 3G network according to ETSI TS 135 208, authentication in the 2G\3G\4G\5G network according to standardization recommendation R 1323565.1.003-2017, execution of applications using the USIM Application Toolkit (USAT) mechanism, according to the ETSI TS 131 xxx standard series, including the ISIM application, support for SMS-PP and SMS-CB services according to ETSI TS 123 040 and ETSI TS 123 041.

The Russian operating system for SIM cards allows you to:

  • create fully verifiable solutions
  • comply with the requirements of Federal Service Security/Federal Service for Technical and Export Control regulators
  • make on-the-fly improvements according to the requirements of local customers
  • create secure network segments of virtual operators and private LTE networks, using national algorithms

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