Commission Implementing Regulation (EU) 2016/799 of 18 March 2016 implementing Regulation (EU) No 165/2014 of the European Parliament and of the Council laying down the requirements for the construction, testing, installation, operation and repair of tachographs and their components (Text with EEA relevance) (c. 799)

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ANNEX I C U.K. Requirements for construction, testing, installation, and inspection

Appendix 2

TACHOGRAPH CARDS SPECIFICATION U.K.

3. HARDWARE AND COMMUNICATION U.K.

3.5. Command descriptions U.K.

3.5.2 READ BINARY U.K.

3.5.2.3 Command with odd instruction byte U.K.

3.5.2.3.1 Command with secure messaging (example) U.K.

TCS_55 Response message if the command is successful U.K.

Byte	Length	Value	Description
#1	1	‘B3h’	Plain Data encoded in BER-TLV
#2	L	‘NNh’ or ‘81 NNh’	LPV: length of returned data (=original Le). L is 2 bytes if LPV>127 bytes.
#(2+L)-#(1+L+NN)	NN	‘XX..XXh’	Plain Data value encoded in BER-TLV, i.e. data read encapsulated in a discretionary data object with tag ‘53h’.
#(2+L+NN)	1	‘99h’	Processing Status of the unprotected response APDU
#(3+L+NN)	1	‘02h’	Length of Processing Status
#(4+L+NN) — #(5+L+NN)	2	‘XX XXh’	Processing Status of the unprotected response APDU
#(6+L+NN)	1	‘8Eh’	TCC: Tag for cryptographic checksum
#(7+L+NN)	1	‘XXh’	LCC: Length of following cryptographic checksum ‘08h’, ‘0Ch’ or ‘10h’ depending on AES key length for Generation 2 secure messaging (see Appendix 11 Part B)
#(8+L+NN)-#(7+M+L+NN)	M	‘XX..XXh’	Cryptographic checksum
SW	2	‘XXXXh’	Status Words (SW1,SW2)