ISO IEC 7816-4 FILETYPE PDF

ISO , Section 5 contains basic organizations, data structures, file organization, file referencing methods, data referencing methods, This part of ISO/IEC supports the following two categories of files: . 0 — x x x — — —, File type. ISO/IEC is intended to be used in any sector of activity. It specifies: a ) contents of command-response pairs exchanged at the interface,. b) means of. ISO/IEC (): “Information technology – Identification cards; Integrated . The key reference is indicated using tag ’83’ as defined in ISO/IEC [2].

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No byte is used for Le valued to 0.

F I G U R E 2

When a file cannot be implicitly selected, it shall be possible to select it by at least one of the following methods: This clause describes the following features: Identification of persons using biometric methods is outside the scope of this standard. When the card provides indications in several places, the indication valid for a given EF is the closest one to that EF within the path from the MF to that EF.

Within an EF of record structure, data unit referencing may not provide the intended result because the storage order of the records in the EF is not known, e. Personal verification through biometric methods”. The tag field T consists of one or more consecutive bytes.

Figure 1 — Logical file organization example. Data authentication — Using internal data, either secret or public, the card checks redundant data recived from the outside world. The previous occurrence shall be the closest record with the specified identifier but in a smaller logical position than the current record.

ISO/IEC – Wikipedia

This specification does not preclude the determination by sequential analysis of which mechanisms and which security items shall be used for processing the remaining part of the data field. The length of Le is not null; therefore the Le field is present. According to its abstract, it specifies the operating conditions of an integrated circuit card that provides a USB interface. In each message involving security mechanisms based on cryptography, the data field shall comply with the basic encoding rules of ASN.

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Therefore the first created record is in the first logical position. Record structure — The EF is seen at the interface as a sequence of individually identifiable records. Decoding conventions for Le If the value of Le is filetye in 1 or 2 byte s where the bits are not all null, then the value of Le is equal to the value of the byte s which lies in the range from 1 to or ; the null value of all the bits tiletype the maximum value of Le: Within each EF of transparent structure, each data unit can be referenced by an offset e.

In case 1, the body of the command APDU is empty. The file control information may be present for any file.

Within an EF of record structure, records may have the same record identifier, in which case data contained in the records may be used for discriminating between them. In addition to the cryptogram mechanism, data confidentiality can be achieved by data concealment.

Retrieved 19 April Linear EF with record of fixed size. SM data objects incorrect.

The computation of a digital signature related data objects. Consequently, the body is empty. Those data objects shall integrate data block by data block in the current check block.

ISO/IEC 7816

Therefore a spcecific response corresponds to a specific command, referred to as a command-response pair. The basic logical channel is permanently available. However, logical channels may share application-dependent security status and therefore may have security-related command interdependencies across logical channels e. The blocking shall be continuous at the border between 7186-4 data objects to be integrated The padding shall apply at the end of each data object to be integrated followed either by a data object not to be integrated or by no further data object.

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ISO part 4 section 5 APDU level data structures

The following additional rules are defined for linear structures and for cyclic structures: When padding is applied but not indicated the rules defined in 1. This mechanism may be used for protecting the right of the user.

The file reference denotes the file where the key reference is valid. If the concept of logical filegype is applied, the file specify security status may depend on the logical channel see 1. Each time a reference is made with a record identifier, an indication shall specify the logical position of the target record the first or last occurrence, the next or previous occurrence relative to the record pointer: Security attibutes may be associated with each file and fix the uso conditions that shall be satisfied to allow operations on the file.

NET library for chip cards.

The other DFs are optional. Created inamended in,updated in By the relevant security mechanisms, with the selected security items, the card shall produce all the requested security mechanism data objects.