Smart Reader Operation NFC Templates Mifare Plus SL3
September 3, 2024 at 2:25 AMMifare Plus SL3 Template
Description
Use the Mifare Plus SL3 Template to read data from a NXP Mifare Plus PICC (Mifare Plus 2K, Mifare Plus 4K) running in Security Level 3.
The reader may either
-
Read arbitrary data; the data will be transmitted in hexadecimal format. To do so, select the RAW mode in TOF register.
-
Read a number (decimal output). To do so, select the decimal mode in TOF register.
-
Read a string (ASCII-encoded data). To do so, select either the Short String or the Long String mode in TOF register.
The target data is pointed to by either:
-
A sector AID in the MAD (Mifare Access Directory) of the card,
-
An absolute block address.
The AID or the block address is specified in the LOC register.
Registers
This Template uses 6 configuration registers:
Alias | Offset | Name | Description |
---|---|---|---|
LKL | 0 |
Lookup List | Set to 63 to use this Template |
LOC | 3 |
Location of Data | See details below |
AUT | 5 |
Authentication | See details below |
TOF | 1 |
Output Size and Format | See details below |
OPT | 4 |
Options | Template-specific Options |
PFX | 2 |
Prefix | Template-specific Prefix |
LOC - Location of Data
Offset : 3
Size : 5
Remark : Reading can cross sector boundaries, but sector trailers are always discarded.
Bytes 0-1 : AID
AID of the sector (MSB-first).
Remark : Set to 0000
to specify an absolute address in the next byte.
Byte 2 : Address
This is the Address of the 1st block to read.
Valid range depends on the memory size of the PICC (1K->64 blocks, 4K->256 blocks).
Remark : Set to 00
to specify an AID in the previous bytes.
Byte 3 : Shift Bytes
Leading bytes to suppress; valid range is 0
to 48
(in decimal).
Byte 4 : Shift Bits
Leading bits to suppress; valid range is 0
to 7
.
AUT - Authentication
Offset : 5
Size : 17
Byte 0 : Settings
Bit | Role | Values |
---|---|---|
7 | Type of Key | 0 : Key A1 : Key B |
6-5 | Location of Secret Key | 0 : Key is provided in the Template1 : Internal SAM AV3 : SAM AV in 1st slot |
4-3 | RFU | |
2-0 | Read mode | 0 : Read encrypted, MAC on command, no MAC on response1 : Read encrypted, MAC on command, MAC on response2 : Read in plain, MAC on command, no MAC on response3 : Read in plain, MAC on command, MAC on response4 : Read encrypted, no MAC on command, no MAC on response5 : Read encrypted, no MAC on command, MAC on response6 : Read in plain, no MAC on command, no MAC on response7 : Read in plain, no MAC on command, MAC on response |
Byte 1 : Key slot in the SAM AV
Condition : When one of the two “SAM specified” options is selected in Byte 0, Byte 1 specifies the Key slot. Other bytes (if present) are ignored.
Bytes 1-16 : Value of the AES Secret Key
Condition : When “Key is provided in the Template” is selected in byte 0, Bytes 1-16 store the actual Key.
TOF - Output Size and Format
Offset : 1
Size : 2
Byte 0 : RAW Mode
Condition : When RAW Mode is selected (Bit 6 in Byte 0 is 0
)
Bit | Role | Values |
---|---|---|
7 | Invert Data? | 0 : Transmit the sequence of bytes as is1 : Transmit the sequence of bytes in reverse order |
6 | Mode | 0 : RAW Mode (Data is a numerical value)1 : String Mode (Data is an ASCII string) |
5 | Padding if Data is shorted than specified length | 0 : Padd with 0 on the left1 : Padd with F on the right |
4 | Remove leading zeroes? | 0 : Keep all digits1 : Suppress 0 digits on the left of the Data |
3-0 | Length and Format | 0 : Decimal, 10 digits (truncation on 4-B)1 : Raw (hex), 4 bytes (32 bits)2 : Raw (hex), 8 bytes (64 bits)3 : Raw (hex), 5 bytes (40 bits)4 : Raw (hex), 10 bytes (80 bits)5 : Raw (hex), 7 bytes (56 bits)6 : Raw (hex), 11 bytes (88 bits)7 : RFU8 : Raw (hex), 16 bytes (128 bits)9 : Raw (hex), 20 bytes (160 bits)10 : Raw (hex), 24 bytes (196 bits)11 : Raw (hex), 32 bytes (256 bits)12 : Decimal, 12 digits (truncation on 5-B)13 : Decimal, 13 digits (truncation on 5-B)14 : Decimal, variable length15 : Raw (hex), variable length |
Byte 0 : String Mode
Condition : When String Mode is selected (Bit 6 in Byte 0 is 1
)
Bit | Role | Values |
---|---|---|
7 | Invert Data? | 0 : Transmit the sequence of characters as is1 : Transmit the sequence of characters in reverse order |
6 | Mode | 0 : RAW Mode (Data is a numerical value)1 : String Mode (Data is an ASCII string) |
5 | Padding if Data is shorted than specified length | 0 : Variable length (no padding)1 : Padd with (space characters) on the right until the specified length |
4 | Short string or Long string? | 0 : Short string (truncate to 16 characters or less)1 : Long string (more than 16 characters) |
3-0 | Length | 0 : 16 characters1 : 1 character2 : 2 characters3 : 3 characters4 : 4 characters5 : 5 characters6 : 6 characters7 : 7 characters8 : 8 characters9 : 9 characters10 : 10 characters11 : 11 characters12 : 12 characters13 : 13 characters14 : 14 characters15 : 15 characters |
Byte 1 : Options for Long String
Condition : When Long String Mode is selected (Bit 6 in Byte 0 is 1
and Bit 4 is 1
)
Use this byte to specify the exact length to read from the card. Valid range is 1
to 255
.
OPT - Options
Offset : 4
Size : 1
If this register is set, the Reader adds a token to its output to tell the receiver what kind of credential has been read.
Bit | Role | Values |
---|---|---|
7-4 | RFU | |
3-2 | Position of the Card Type Token | 0 : Before the Prefix1 : After the Prefix, before the Data2 : After the Data (before the Suffix)3 : RFU |
1-0 | Add a Card Type Token to the output stream? | 0 : Do not add a Card Type Token1 : Add Card Type Token in hex (63 )2 : Add Card Type Token as char (M )3 : RFU |
PFX - Prefix
Offset : 2
Size : 8
A Template-specific Prefix, that is added after the Reader’s global Prefix.
Remark : Use \t
for a Tab, \n
for Enter, \b
for Back space, \v
for Vertical space.