Commission Implementing Regulation (EU) 2016/799Show full title

3.5.5 VERIFY U.K.

This command is compliant with ISO/IEC 7816-4, but has a restricted usage compared to the command defined in the norm.

Only the workshop card is required to support this command.

Other types of tachograph cards may or may not implement this command, but for these cards no reference CHV is personalized. Therefore these cards cannot perform this commend successfully. For other types of tachograph cards than workshop cards the behavior, i.e. the error code returned, is out of the scope of this specification, if this command is sent.

The Verify command initiates the comparison in the card of the CHV (PIN) data sent from the command with the reference CHV stored in the card.

[F1 TCS_72 The PIN entered by the user must be ASCII encoded and right padded with ‘ FFh ’ bytes up to a length of 8 bytes by the IFD, see also the data type WorkshopCardPIN in Appendix 1.] U.K.

Textual Amendments

F1 Substituted by Commission Implementing Regulation (EU) 2018/502 of 28 February 2018 amending Implementing Regulation (EU) 2016/799 laying down the requirements for the construction, testing, installation, operation and repair of tachographs and their components (Text with EEA relevance).

TCS_73 The tachograph applications generation 1 and 2 shall use the same reference CHV. U.K.

TCS_74 The tachograph card shall check whether the command is encoded correctly. If the command is not encoded correctly the card shall not compare the CHV values, not decrement the remaining CHV attempt counter and not reset the security status ‘PIN_Verified’, but abort the command. A command is encoded correctly, if the CLA, INS, P1, P2, Lc bytes have the specified values, Le is absent, and the command data field has the correct length. U.K.

TCS_75 If the command is successful, the remaining CHV attempt counter is reinitialised. The initial value of the remaining CHV attempt counter is 5. If the command is successful the card shall set the internal security status ‘PIN_Verified’. The card shall reset this security status, if the card is reset or if the CHV code transmitted in the command does not match the stored reference CHV. U.K.

Note: Using the same reference CHV and a global security status prevents that a workshop employee must re-enter the PIN after a selection of another tachograph application DF. U.K.

TCS_76 An unsuccessful comparison is recorded in the card, i.e. the remaining CHV attempts counter shall be decremented by one, in order to limit the number of further attempts of the use of the reference CHV. U.K.

TCS_77 Command Message U.K.

Byte	Length	Value	Description
CLA	1	‘00h’
INS	1	‘20h’	INS
P1	1	‘00h’	P1
P2	1	‘00h’	P2 (the verified CHV is implicitly known)
Lc	1	‘08h’	Length of CHV code transmitted
#6-#13	8	‘XX..XXh’	CHV

TCS_78 Response Message U.K.

Byte	Length	Value	Description
SW	2	‘XXXXh’	Status Words (SW1,SW2)

• If the command is successful, the card returns ‘9000’.

• If the reference CHV is not found, the processing state returned is ‘6A88’.

• If the CHV is blocked, (the remaining attempt counter of the CHV is null), the processing state returned is ‘6983’. Once in that state, the CHV can never be successfully presented anymore.

• If the comparison is unsuccessful, the remaining attempt Counter is decreased and the status ‘63CX’ is returned (X>0 and X equals the remaining CHV attempts counter.

• If the reference CHV is considered corrupted, the processing state returned is ‘6400’ or ‘6581’.

• If Lc is different from ‘08h’, the processing state is ‘6700’.