javacardx.biometry

Interface OwnerBioTemplate

All Superinterfaces:

BioTemplate

public interface OwnerBioTemplate
extends BioTemplate

The OwnerBioTemplate interface should be implemented by the applet which owns the biometric template. It extends the BioTemplate interface and adds functionality to enroll a reference template.

Since:

2.2.2

Field Summary

Fields inherited from interface javacardx.biometry.BioTemplate

MATCH_NEEDS_MORE_DATA, MINIMUM_SUCCESSFUL_MATCH_SCORE

Method Summary

Methods

Modifier and Type	Method and Description
void	doFinal() Finalizes the enrollment of a reference template.
void	init(byte[] bArray, short offset, short length) Initializes the enrollment of a reference template.
void	resetUnblockAndSetTryLimit(byte newTryLimit) Resets the validated flag, unblocks the reference, updates the try limit value and resets the try counter to the try limit value.
void	update(byte[] bArray, short offset, short length) Continues the enrollment of a reference template.

Methods inherited from interface javacardx.biometry.BioTemplate

getBioType, getPublicTemplateData, getTriesRemaining, getVersion, initMatch, isInitialized, isValidated, match, reset

Method Detail

init

void init(byte[] bArray,
        short offset,
        short length)
          throws BioException

Initializes the enrollment of a reference template. This method is also used to update a reference template. It resets the validated flag and, in the update case, uninitializes the previous reference. Note: A correct enrollment sequence is : init,[update],doFinal. Calling init and doFinal is mandatory, calling update is optional.

Parameters:

bArray - - byte array containing the data of the template

offset - - starting offset in the bArray

length - - byte length of the template data in the bArray

Throws:

BioException - with the following reason codes:

• BioException.INVALID_DATA if the submitted template data does not have the required format.

update

void update(byte[] bArray,
          short offset,
          short length)
            throws BioException

Continues the enrollment of a reference template. This method should only be used if all the input data required for enrollment is not available in one byte array. It can be called several times. Note: A correct enrollment sequence is : init,[update],doFinal. Calling init and doFinal is mandatory, calling update is optional.

Parameters:

bArray - - byte array containing the data of the template

offset - - starting offset in the bArray

length - - byte length of the template data in the bArray

Throws:

BioException - with the following reason codes:

• BioException.ILLEGAL_USE if the reference is already initialized or the current enrollment state doesn't expect this method.
• BioException.INVALID_DATA if the submitted template data does not have the required format.

doFinal

void doFinal()
             throws BioException

Finalizes the enrollment of a reference template. Final action of enrollment is to designate a reference template as being complete and ready for use (marks the reference as initialized, resets the try counter and unblocks the reference). This routine may also include some error checking prior to the validation of reference template as ready for use. Note: A correct enrollment sequence is : init,[update],doFinal. Calling init and doFinal is mandatory, calling update is optional.

Throws:

BioException - with the following reason codes:

• BioException.ILLEGAL_USE if the reference is already initialized or the current enrollment state doesn't expect this method.
• BioException.INVALID_DATA if the submitted template data does not have the required format.

resetUnblockAndSetTryLimit

void resetUnblockAndSetTryLimit(byte newTryLimit)
                                throws BioException

Resets the validated flag, unblocks the reference, updates the try limit value and resets the try counter to the try limit value.

Parameters:

newTryLimit - - the number of tries allowed before the reference is blocked. newTryLimit must be at least 1.

Throws:

BioException - with the following reason codes:

• BioException.ILLEGAL_VALUE if the newTryLimit parameter is less than 1.