C.I.E – Carta di Identità Elettronica Functional Specification Version 2.0

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10. Data StructuresThe CIE holds data either in files, or in objects. The difference between them lies in the logicalorganization and in the access mode.Files are organized in a file system, organized in a hierarchical tree structure.To access a file, it has to be selected (either implicitly or explicitly), and has then to become thecurrent file.Objects are referenced implicitly or explicitly by dedicated commands, do not need to be selected(actually they cannot be selected with a Select command).Some implementation may actually map objects onto internal files, that will be allocated in the filesystem, but nevertheless the access rules for those objects remain the same.File system organization, coding and access are regulated by [2], as described in the followingchapters.10.1 File CategoriesThe CIE file system is based on three categories of basic file components:The root of the file system, the Master File (MF),Directory files, denoted as dedicated files (DF),Generic data files, denoted as Elementary files (EF).The Master File (MF) is the root of the file system and is always the initial entry point to the filesystem. After a reset of the card, the MF is selected.The Dedicated Files (DFs) are similar to Directories in traditional file systems.DFs can contain Elementary Files (EFs), and/or other DFs. The MF can be considered to be aspecial DF that contains all the files.The Elementary File (EF) is used for data storage. For this reason EFs are also referred to as datafiles. File access is similar to traditional file systems. To access a file (for reading, writing, or anyother operation), it has to be selected.10.2 Data File TypesThe following structures of EF are defined:Transparent structure:The EF is seen at the interface as a sequence of bytes.CIE - Functional Specification v 2.0 -Page 22/76
Record structure:The EF is seen at the interface as a sequence of individually identifiable records.The following attributes are defined for record structured EFs.Size of the records: fixed or variableOrganization of the records: linear or cyclic structureThe following EF types are then used:EF Transparent: (also called binary files)EF Linear Fixed: linear EF with all records of a preset fixed size.EF Linear Variable TLV: Linear file with TVL structured records.EF Cyclic: Cyclic file with fixed record length.10.3 File System StructureThe file structure is usually shown using the tree (or hierarchical) representation. Here, the logicallayout of the file structure is shown so that one can easily find the path to a particular file. Thefollowing diagram provides an example of this type of layout.MFDF1EF1EF3EF2DF2Figure 1: ISO 7816 file system structureElementary Files can be referenced by their 2 byte File identifier (FID), while Dedicated Files canbe referenced by their File identifiers (FID) or by the application name (AID) up to 16 bytes long.CIE allows at least a nesting level of 8 DF.CIE - Functional Specification v 2.0 -Page 23/76
Page 1 and 2: C.I.E. - Carta di Identità Elettro
Page 3 and 4: Table of Contents1. Revision Histor
Page 5 and 6: 12.17 GENERATE KEY PAIR ...........
Page 7 and 8: 2. IntroductionThis document is the
Page 9 and 10: 4. Reference Documents1. ISO/IEC 78
Page 11 and 12: Public Key - That key of an entity
Page 13 and 14: lsbLSBMACMFmsbMSBMSEMTSCOSOCIPINPPP
Page 15 and 16: 6. Electrical ParametersFor all ele
Page 17 and 18: 8. Answer To Reset (ATR)The Answer
Page 19 and 20: XXh XXh H5/H6 Y02h H7 Y49h H8 Y54h
Page 21: 9. Application SelectionNo explicit
Page 25 and 26: Linear Variable TLV or Cyclic EFSiz
Page 27 and 28: The card maintains an internal Secu
Page 29 and 30: BSO ID 1 01h to 1FhOPTION 1 See Tab
Page 31 and 32: RSA public key Exponent for Authent
Page 33 and 34: 11.4 Secure MessagingThe Secure Mes
Page 35 and 36: Byte Nr. SM Condition1 ENC USE IN2
Page 37 and 38: • Step 4: APDU command set up in
Page 39 and 40: 11.4.5 SM Response in SM_ENCOrigina
Page 41 and 42: 11.4.7 SM Response in SM_ENC_SIGOri
Page 43 and 44: 12. APDU ReferenceThe CIE supports
Page 45 and 46: 6A 86 Incorrect P1-P26A 87 Lc incon
Page 47 and 48: The PUT DATA - DATA_OCI acts on the
Page 49 and 50: 3DES - SM Cipher 10h 83h 03h3DES -
Page 51 and 52: 3 8Fh 6 BYTE 1: Not used - MUST be
Page 53 and 54: Table35Table 34: SELECT FILE Comman
Page 55 and 56: The operation is possible if the ac
Page 57 and 58: n has to be different from FFh.P1=0
Page 59 and 60: First and NextLast and PreviousSecu
Page 61 and 62: acktrackingallowed.b6 = 0b5 = 0b4 -
Page 63 and 64: 12.13 RESET RETRY COUNTERCLA INS P1
Page 65 and 66: 12.15 GIVE RANDOMCLA INS P1 P2 P3 D
Page 67 and 68: Security:The access condition to sa
Page 69 and 70: The access condition to satisfy is
Page 71 and 72: 0X 04 00 00 LC = 00 EmptyTable 59:
Page 73 and 74:
• The length in bits of the priva
Page 75 and 76:
• a sequence of q cipher text blo
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