WINBIO_BIR_HEADER - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// winbio_types.h
typedef struct _WINBIO_BIR_HEADER {
USHORT ValidFields;
WINBIO_BIR_VERSION HeaderVersion;
WINBIO_BIR_VERSION PatronHeaderVersion;
WINBIO_BIR_DATA_FLAGS DataFlags;
WINBIO_BIOMETRIC_TYPE Type;
WINBIO_BIOMETRIC_SUBTYPE Subtype;
WINBIO_BIR_PURPOSE Purpose;
WINBIO_BIR_QUALITY DataQuality;
LARGE_INTEGER CreationDate;
struct {
LARGE_INTEGER BeginDate;
LARGE_INTEGER EndDate;
} ValidityPeriod;
WINBIO_REGISTERED_FORMAT BiometricDataFormat;
WINBIO_REGISTERED_FORMAT ProductId;
} WINBIO_BIR_HEADER;
View the official Windows Driver Kit DDI referenceNo description available.
The WINBIO_BIR_HEADER structure contains the Common Biometric Exchange File Format (CBEFF) Patron Format A information that describes the rest of the BIR.
ValidFieldsA Patron Format A bitmask that indicates which CBEFF optional fields are present in the BIR. For more information about all members of WINBIO_BIR_HEADER, follow the link in the Remarks section to the NISTIR 6529-A Specification.
HeaderVersionA structure of type WINBIO_BIR_VERSION that specifies the CBEFF header version.
Versions are represented as 8-bit values of the form: 0xNM, where N is the major version and M is the minor version.
typedef UCHAR WINBIO_BIR_VERSION, *PWINBIO_BIR_VERSION;
PatronHeaderVersionA structure of type WINBIO_BIR_VERSION that specifies PATRON_HEADER_VERSION.
DataFlagsA structure of type WINBIO_BIR_DATA_FLAGS that specifies the level of processing expected for a data capture.
TypeA structure of type WINBIO_BIOMETRIC_TYPE that specifies the biometric type.
SubtypeA structure of type WINBIO_BIOMETRIC_SENSOR_SUBTYPE that specifies the biometric subtype.
PurposeA structure of type WINBIO_BIR_PURPOSE that specifies the intended use of the data.
DataQualityA structure of type WINBIO_BIR_QUALITY that specifies the biometric data quality. Quality measurements are represented as signed integers in the range 0-100, except:
-1 Quality measurements are supported by the BIR creator, but no value is set in the BIR.
-2 Quality measurements are not supported by the BIR creator.
typedef CHAR WINBIO_BIR_QUALITY, *PWINBIO_BIR_QUALITY;
CreationDateSpecifies the creation date and time of this BIR in UTC by using the format YYYYMMDDhhmmss.
ValidityPeriodSpecifies the validity period of this BIR by using the format described in CreationDate.
ValidityPeriod.BeginDateValidityPeriod.EndDateBiometricDataFormatA structure of type WINBIO_REGISTERED_FORMAT that specifies the data format of the StandardDataBlock for this WINBIO_BIR.
ProductIdA structure of type WINBIO_REGISTERED_FORMAT that specifies the product identifier for the component that generated the StandardDataBlock for this WINBIO_BIR.
You can find more information about the fields of the standard biometric header in the NISTIR 6529-A Specification.