Mifare® Structure - Card Programming Help | Digital Logic Ltd. Main Website

Byte Number	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Description	KEY A						Access Bits				KEY B (optional)
							0xFF	0x07	0x80	USER

Access conditions for data block 0
Access bits			Access condition for				Application
C1₀	C2₀	C3₀	read	write	increment	decrement, transfer, restore	Application
0	0	0	key A\|B¹	key A\|B¹	key A\|B¹	key A\|B¹	transport configuration
0	1	0	key A\|B¹	never	never	never	read/write block
1	0	0	key A\|B¹	key B¹	never	never	read/write block
1	1	0	key A\|B¹	key B¹	key B¹	key A\|B1	value block
0	0	1	key A\|B¹	never	never	key A\|B¹	value block
0	1	1	key B¹	key B¹	never	never	read/write block
1	0	1	key B¹	never	never	never	read/write block
1	1	1	never	never	never	never	read/write block

¹ if Key B may be read in the corresponding Sector Trailer it cannot serve for authentication (all grey marked lines in the last table). As a consequence, if the reader authenticates any block of a sector which uses the grey marked access conditions and using key B, the card will refuse any subsequent memory access after authentication.

Access conditions for data block 1
Access bits			Access condition for				Application
C1₁	C2₁	C3₁	read	write	increment	decrement, transfer, restore	Application
0	0	0	key A\|B¹	key A\|B¹	key A\|B¹	key A\|B¹	transport configuration
0	1	0	key A\|B¹	never	never	never	read/write block
1	0	0	key A\|B¹	key B¹	never	never	read/write block
1	1	0	key A\|B¹	key B¹	key B¹	key A\|B1	value block
0	0	1	key A\|B¹	never	never	key A\|B¹	value block
0	1	1	key B¹	key B¹	never	never	read/write block
1	0	1	key B¹	never	never	never	read/write block
1	1	1	never	never	never	never	read/write block

Access conditions for data block 2
Access bits			Access condition for				Application
C1₂	C2₂	C3₂	read	write	increment	decrement, transfer, restore	Application
0	0	0	key A\|B¹	key A\|B¹	key A\|B¹	key A\|B¹	transport configuration
0	1	0	key A\|B¹	never	never	never	read/write block
1	0	0	key A\|B¹	key B¹	never	never	read/write block
1	1	0	key A\|B¹	key B¹	key B¹	key A\|B1	value block
0	0	1	key A\|B¹	never	never	key A\|B¹	value block
0	1	1	key B¹	key B¹	never	never	read/write block
1	0	1	key B¹	never	never	never	read/write block
1	1	1	never	never	never	never	read/write block

Access conditions for the sector trailer
Access bits		Access condition for						Remark
Access bits		KEYA		Access bits		KEYB
C1₃	C2₃	C3₃	read	write	read	write	read		write
0	0	0	never	key A	key A	never	key A	key A	Key B may be read^[1]
0	1	0	never	never	key A	never	key A	never	Key B may be read^[1]
1	0	0	never	key B	key A\|B	never	never	key B
1	1	0	never	never	key A\|B	never	never	never
0	0	1	never	key A	key A	key A	key A	key A	Key B may be read, transport configuration^[1]
0	1	1	never	key B	key A\|B	key B	never	key B
1	0	1	never	never	key A\|B	key B	never	never
1	1	1	never	never	key A\|B	never	never	never

^[1] for this access, condition key B is readable and may be used for data

1. µFR & µFR Zero Series

2. µFR Online & µFR Zero Online Series

3. DL533N Series

5. SDK & Software Tools

6. Hardware compatibility

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Mifare® structure – card programming help

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