WINBIO_STORAGE_RECORD structure (winbio_adapter.h)

The WINBIO_STORAGE_RECORD structure contains a biometric template and associated data in a standard format. This structure is used to pass information between an engine adapter and a storage adapter.

Syntax

typedef struct _WINBIO_STORAGE_RECORD {
  PWINBIO_IDENTITY         Identity;
  WINBIO_BIOMETRIC_SUBTYPE SubFactor;
  PULONG                   IndexVector;
  SIZE_T                   IndexElementCount;
  PUCHAR                   TemplateBlob;
  SIZE_T                   TemplateBlobSize;
  PUCHAR                   PayloadBlob;
  SIZE_T                   PayloadBlobSize;
} WINBIO_STORAGE_RECORD, *PWINBIO_STORAGE_RECORD;

Members

Identity

Pointer to a WINBIO_IDENTITY structure that contains the GUID or SID of the storage record.

SubFactor

A WINBIO_BIOMETRIC_SUBTYPE value that specifies the biometric sub-factor associated with the template data.

Important  

Do not attempt to validate the value supplied for the SubFactor value. The Windows Biometrics Service will validate the supplied value before passing it through to your implementation. If the value is WINBIO_SUBTYPE_NO_INFORMATION or WINBIO_SUBTYPE_ANY, then validate where appropriate.

 

IndexVector

Pointer to a contiguous array of ULONG values. These values represent the bucket address assigned to the biometric template by the engine adapter.

IndexElementCount

The number of ULONG values in the array specified by the IndexVector field.

TemplateBlob

Pointer to an array of bytes that contains the biometric template data.

TemplateBlobSize

Size, in bytes, of the template specified by the TemplateBlob parameter.

PayloadBlob

Pointer to an array of bytes that contains integrity checking data. This field is used only by adapters for removable devices that contain embedded storage.

PayloadBlobSize

Size, in bytes, of the data specified by the PayloadBlob parameter.

Remarks

The WINBIO_STORAGE_RECORD structure and the memory it points to are the property of the component that created the structure. In particular, the component determines when the structure is deleted and when its embedded pointers become invalid. When other components are given temporary access to this structure, they must follow the rules governing structure lifetime set by the owning component.

Requirements

Requirement	Value
Minimum supported client	Windows 7 [desktop apps only]
Minimum supported server	Windows Server 2008 R2 [desktop apps only]
Header	winbio_adapter.h

See also

Plug-in Functions

Plug-in Structures

StorageAdapterGetCurrentRecord