Classic Electronics Smart 4F Specifikace stáhnout pdf (Strana 28)

Smart Cards Lab COMPGA12 University College London

13.7 Writing One Block

We use the following command:

MIFARE CLASSIC WRITE

CLA INS P1 P2 Lc Data

FF D6 00 10

Where Data= must be exactly 16

bytes.

The answer should be:

13.8 Reading The Block Again

We can verify if writing was done correctly:

MIFARE CLASSIC READ

CLA INS P1 P2 Le

FF B0 00 10

Write the answer obtained here:

and compare to the data written:

13.9 Writing Again to Restore Previous Value

We do again:

UPDATE

CLA INS P1 P2 Lc Data

FF D6 00 10

The answer should be:

13.10 Reading The Block Again

We can verify if writing was done correctly:

MIFARE CLASSIC READ

CLA INS P1 P2 Le

FF B0 00 10

Write the answer obtained here:

c

Nicolas T. Courtois 2009-10

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