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ISO/IEC 19785-1:2015 |
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| SCOPE | ISO/IEC 19785-1:2015 defines structures and data elements for biometric information records (BIRs). |
| LATEST PUBLICATION DATE | August 2015 |
| COMMITTEE / WG | |
| WIKI WATCH Insert here: activities, gaps, opportunities, and other user driven comments |
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Submitted by rsreillo on Sun, 10/06/2019 - 15:38
In addition to the data formats defined in ISO/IEC 19794 and ISO/IEC 39794 which are defined as to include the information from a single user and a single modality, SC 37 has also defined a meta-structure called CBEFF (i.e. ISO/IEC 19785 series of standards), that allows: — the coding of biometric information from more than a single user; — the coding of biometric information from more than one modality; and — protecting biometric data by using security mechanisms that may cipher and/or authenticate the data included into the CBEFF BIR structure. A CBEFF BIR (i.e. Biometric Information Record) is composed of: — a standard biometric header in a particular patron format (as defined in ISO/IEC 19785-1 and being the patron formats defined in ISO/IEC 19785-3). This header introduces the information embedded into the BIR; — the biometric data block (BDB), which can be a BDIR defined in ISO/IEC 19794 or ISO/IEC 39794; and — an optional security block (as defined in ISO/IEC 19785-1 and ISO/IEC 19785-4) that embeds the data needed for protecting the biometric information. CBEFF also allows multiple BDB, such as a multiple CBEFF BIR structure and complex CBEFF BIR structure. The former can contain multiple BIRs and the latter can contain multiple BDBs, each having its own standard biometric header plus additional standard biometric headers that express the relations among the BDBs. The way that CBEFF records can be coded can change from one architecture to another. This is why ISO/IEC 19785 3 defines several ways to code CBEFF records in what is called as patron formats. There are patron formats defined for binary coding, with different system word lengths, others for XML coding, etc. Most of them are defined using ASN.1 formal language.