FEATURES OF COMPUTER TECHNICAL RESEARCH OF THE INFORMATION IN THE MEMORY OF SIM, USIM AND R-UIM-CARDS


  • Yu S. Harabuga
Keywords: computer technical researches, information, elementary file, R-UIM, SIM, USIM-cards

Abstract

The paper considers the features of expert research of elementary files contents of SIM, USIM and R-UIM-cards, the information on which is absent in the current edition of technique 10.9.10 «Technique of computer technical research of information in the memory of SIM-cards». Effective standards which regulate the structure of files in SIM, USIM and R-UIM-cards, are specified. For today there are three types of identification modules of cellular communication customers: SIM-cards for networks of standard GSM, R-UIM-cards for networks ofstandard CDMA and USIM-cards for networks ofstandards UMTS and LTE. The hierarchical structure of a SIM-card corresponds to the hierarchical structure of a smart card of standard ISO/IEC 7816-4 and consists from three types of files: the main file (MF), the intended file (DF) and an elementary file (EF). For addressing or identification of each concrete file the identifier of a file is used which consists of two bytes. The first byte ofthe identifier definesfile type. The attention is paid to the elementary file EFspn in which the name of a cellular communication operator is stored. The theoretical and practical information concerning research of the content of the intended file DFpHONEBCOK is presented in which the telephone book of an USIM-card is stored. It’s specified that elementary file EFSMS is stored in the memory of a R-UIM-card in other intended file in comparison with SIM and USIM-cards. The research algorithm of contents EFSMS file in memory of a R-UIM-card is offered. The attention that in identification number of a R-UIM-card some Ukrainian CDMA-operators specify a mobile code of the country 255 instead of the international telephone code of Ukraine 380, is paid. Keeping in mind the presented information will help to avoid expert errors during computer technical research of the information in the memory of SIM, USIM and R-UIM-cards.


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Published
2017-11-29
How to Cite
Harabuga, Y. S. (2017). FEATURES OF COMPUTER TECHNICAL RESEARCH OF THE INFORMATION IN THE MEMORY OF SIM, USIM AND R-UIM-CARDS. Theory and Practice of Forensic Science and Criminalistics, 17, 318-324. https://doi.org/10.32353/khrife.2017.40
Section
FORENSIC ENGINEERING AND TECHNICAL EXAMINATION