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3.5 Fingerprint image format for images retained by agencies

NIST PIV and digital identity SP 800-76-1
All changes in this version
first version loaded 3 Fingerprint enrollment part of 3

Title

Fingerprint image format for images retained by agencies

Control

This section specifies a common data format record for the retention of the fingerprint images collected in Section 3.2. Specifically fingerprint images enrolled or otherwise retained by agencies shall be formatted according to the INCITS 381-2004 finger image based interchange format standard [FINGSTD]. This set shall include ten single-finger images. These shall be obtained by segmentation of the plain multi-finger images gathered in accordance with Options 1, 2 or 3 of Table 1, and the single plain thumb impressions from presentations 4 & 5 of Options 2 and 3. These images shall be placed into a single [FINGSTD] record. The record may also include the associated multi-finger plain impressions and the rolled images. This document ([800-76]) does not specify uses for any single-finger rolled images gathered according to Options 2 or 3 of Table 1. The record shall be wrapped in the CBEFF structure described in Section 6. Agencies may encrypt this data per the provisions of Section 6, Table 9, Note 2. Table 4 gives a clause-by-clause profile of [FINGSTD]. The primary purpose of the Table is to give PIV specifications for those fields of [FINGSTD] that have optional content. Rows 1-10 give normative content. Row 11 requires the CBEFF structure of Section 6. However, its FASC-N value (Table 8, Line 13) may be replaced by a field of all zeroes in this one exceptional case: Storage of PIV registration images before a FASC- N has been assigned. Such instances (including the digital signature) shall be regenerated once the FASC-N is known. Rows 12-27 give PIV specifications for the fields of the General Record Header of [FINGSTD, Table 2]. These are common to all images in the record. Similarly, Rows 28-36 provide specifications for the Finger Image Header Record in Table 4 of [FINGSTD]. The "PIV Conformance" column provides PIV specific practice and parameter defaults of the standard. INCITS 381 is likely to be revised by the INCITS M1 committee. Such revisions are irrelevant to PIV; however implementations should respect the version number on Line 14 of Table 4. To assist implementers, NIST has made [FINGSTD] sample data available 3 .

Table 4: INCITS 381 profile for agency retention of fingerprint Images

INCITS 381-2004 Section title and/or field name (Numbers in parentheses are [FINGSTD] clause numbers) Field or content Value required Values allowed Informative Remarks