ISO IEC 19785-2:2021 pdf download – Information technology — Common Biometric Exchange Formats Framework — Part 2: Biometric registration authority.
5.2.3 It is possible in representations of an object identifier to imply (by the context of that representation) identification of part of the path from the root to a node in the object identifier tree. In the extreme case, only a single object identifier component from that implied node need be represented. When context of the object identifier arc is not obvious, the full object identifier value should be given. EXAMPLE ISO/IEC 19785-1 and the ISO/IEC 19784 series use a 16-bit field to provide the identification of an object identifier arc beneath an arc that is implied by the context. 5.2.4 Components of ASN.1 object identifiers are non-negative integer values (zero or greater) of unlimited magnitude. However, object identifier values used for registration purposes shall be restricted to positive integers, with a minimum value of 1 and a maximum value of 65535. This approach allows the use of zero to encode the abstract value NO VALUE AVAILABLE in CBEFF patron formats and supports standards which restrict the ASN.1 object identifiers components to 16-bit positive integers. 5.2.5 Successful registration as a biometric organization provides that biometric organization with a CBEFF biometric organization identifier. This is a 16-bit binary value (that can be interpreted as a positive integer) for an ASN.1 object identifier arc under {iso(1) registration-authority(1) cbeff(19785) biometric-organization(0) } The allocated object identifier value is unambiguous worldwide, but the CBEFF biometric organization identifier can also be used alone in contexts where the preceding arcs are implied. 5.2.6 A biometric organization that is a recognized standards development organization (standards body, working group, or industry consortium) and is a producer of open standards as defined in ISO/IEC 19785-1 is a CBEFF patron. Any biometric organization may register BDB formats (see 5.2.8 ), SB formats (see 5.2.9), and biometric products (see 5.2.10 and 5.2.11), but only a CBEFF patron can register a BIR format, or a CBEFF patron format (see 5.2.7 ). 5.2.7 Successful registration of a BIR format by a CBEFF patron records that the BIR format is identified by an arc with a 16-bit BIR format identifier (provided by the CBEFF patron) and also called a CBEFF patron format identifier, under the arc {iso(1) registration-authority(1) cbeff(19785) biometric-organization(0) <organization id > patron-format(1) } and enables publication of a reference to the specification of that BIR format (CBEFF patron format). The <organization id> is either the decimal value of the 16-bit CBEFF patron identifier of the definer of the CBEFF patron format or is an arc identifier followed by the decimal value in parentheses. The allocated object identifier value is unambiguous worldwide, but the BIR format identifier can also be used alone in contexts where the preceding arcs are implied. EXAMPLE The <organization id> for patron formats defined by ISO/IEC JTC 1/SC 37 is jtc1-sc37(257), and the arc is 1.1.19785.0.257.1 5.2.8 Successful registration of a BDB format by a biometric organization records that the BDB format is identified by an arc with a 16-bit BDB format identifier (provided by the CBEFF biometric organization) under the arc
ISO IEC 19785-2:2021 pdf download – Information technology — Common Biometric Exchange Formats Framework — Part 2: Biometric registration authority
