Abbreviations

Results for area 9.7 Data

term
identifier (ID)
definition

label, symbol or token that names or identifies an entity or a collection of data or the means of designating or referring to a specific instance of a data concept

term
coding scheme identifier (CSI)
definition

prescribed list of reference identifiers which relate to prescribed coding schemes determined in this International Standard and/or issued by the authorized numbering scheme administrator

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term
primitive identifier
definition

identification as a stand alone identity that does not require any qualifiers such as an expiration date, etc.

NOTE 1 to entry: All construct identifiers will be built from more than one primitive identifier.

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term
session counter
definition

data value in the on-board unit that is incremented by the ERI Reader/Writer at each ERI session

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term
ERT number
definition

number assigned to and written into an ERT that acts as an ERT unique identifier

NOTE The ERT number is assumed to be written into the ERT during its manufacture and once written cannot be changed.

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term
distinguishing identifier
definition

information which unambiguously distinguishes an entity

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term
credentials
definition

data that is transferred to establish the claimed identity of an entity

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term
additional vehicle data
definition

ERI data in addition to the vehicle identifier

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term
ERI data
definition

vehicle identifying data which can be obtained from an ERT

NOTE ERI data consists of the vehicle identifier and possible additional vehicle data.

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term
constructed identifier
definition

identification which requires a construct of more than one primitive identifier, as defined in ASN.1

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term
random number
definition

time variant parameter whose value is unpredictable

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term
read only
definition

property that data content cannot be changed by a reader/interrogator

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term
extreme
definition

refers to class 1 requirements for the “ruggedized” system category “A”

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sequence number
definition

time variant parameter whose value is taken from a specified sequence which is non-repeating within a certain time period

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term
key
definition

sequence of symbols that controls the operations of a cryptographic transformation (e.g. encipherment, decipherment, cryptographic check function computation, signature generation, or signature verification)

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term
password
definition

confidential authentication information, usually composed of a string of characters

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term
private decipherment key
definition

private key which defines the private decipherment transformation

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term
private key
definition

key of an entity's asymmetric key pair which should only be used by that entity

NOTE In the case of an asymmetric signature system the private key defines the signature transformation. In the case of an asymmetric encipherment system the private key defines the decipherment transformation.

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private signature key
definition

private key which defines the private signature transformation

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term
public encipherment key
definition

public key which defines the public encipherment transformation

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term
public key
definition

key of an entity's asymmetric key pair which can be made public

NOTE In the case of an asymmetric signature system the public key defines the verification transformation. In the case of an asymmetric encipherment system the public key defines the encipherment transformation. A key that is “publicly” known is not necessarily globally available. The key is only made available to all members of a pre-specified group.

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term
public key certificate
definition

certificate public key information of an entity signed by the certification authority and therefore rendered unforgeable

NOTE A public key certificate also specifies the role of the entity for which the public key information is provided, e.g. manufacturer or registration authority.

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term
public verification key
definition

public key which defines the public verification transformation

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term
secret key
definition

key that is used with a symmetric cryptographic algorithm

NOTE 1 Possession of a secret key is restricted (usually to two entities).

NOTE 2 For ERI, there can be only one entity or several entities, depending on the key management policy.

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system operator key
definition
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term
ciphertext
definition

data produced, through the use of encipherment; the semantic content of the resulting data is not available

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term
cleartext
definition

intelligible data, the semantic content of which is available

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term
digital signature
definition

signature data appended to, or a cryptographic transformation of, a data unit that allows a recipient of the data unit to prove the source and integrity of the data unit and protect against forgery, e.g. by the recipient

NOTE See also cryptography.

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term
challenge
definition

data item chosen at random and sent by the verifier to the claimant, which is used by the claimant, in conjunction with secret information held by the claimant, to generate a response which is sent to the verifier

EXAMPLE In ISO 24534-4 the term challenge is also used in case an ERT does not have enabled encryption capabilities and the challenge is merely copied without any secret information applied.

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term
hash-code
definition

string of bits which is the output of a hash-function

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term
data element structure
definition

framework comprising a number of data elements in a prescribed form

NOTE Also known as a “message”.

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