Advanced Card Systems Limited ACR1281U Benutzerhandbuch

ACR1281U

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Advanced Card Systems Ltd.

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2.3 Read Binary Blocks

The “Read Binary Blocks command” is used for retrieving a multiple of “data blocks” from the
PICC. The data block/trailer block must be authenticated first before executing the “Read Binary
Blocks command”.

Table 2.3-1a: Read Binary APDU Format (5 Bytes)

Command

Class

INS

Read Binary
Blocks

Block

Number

of Bytes

to Read

Block Number (1 Byte):
The starting block.

Number of Bytes to Read (1 Byte):
Multiply of 16 bytes for MIFARE 1K/4K or Multiply of 4 bytes for MIFARE Ultralight

•  Maximum 16 bytes for MIFARE Ultralight.
•  Maximum 48 bytes for MIFARE 1K. (Multiple Blocks Mode; 3 consecutive blocks)
•  Maximum 240 bytes for MIFARE 4K. (Multiple Blocks Mode; 15 consecutive blocks)

Example 1: 0x10 (16 bytes). The starting block only. (Single Block Mode)
Example 2: 0x40 (64 bytes). From the starting block to starting block+3. (Multiple Blocks Mode)

#For safety reason, the Multiple Block Mode is used for accessing Data Blocks only. The Trailer
Block is not supposed to be accessed in Multiple Blocks Mode. Please use Single Block Mode to
access the Trailer Block.

Table 2.3-1b: Read Binary Block Response Format (Multiply of 4/16 + 2 Bytes)

Response

Data Out

Result

Data (Multiply of 4/16 Bytes)

SW1

SW2

Table 2.3-1c: Read Binary Block Response Codes

Results

SW1

SW2

Meaning

Success

The operation is completed
successfully.

Error

The operation is failed.

Examples:
// Read 16 bytes from the binary block

0x04

(MIFARE 1K or 4K)

APDU = {FF B0 00

10}

// Read 240 bytes starting from the binary block

0x80

(MIFARE 4K)

// Block 0x80 to Block 0x8E (15 blocks)
APDU = {FF B0 00

F0}