nfc - mifare classic 1k - Android - Tranceive failed on reading block -


i trying read blocks mifare classic card 1k , android nfc (on galaxy nexus).

private final int mmaxsize = 64;  mclassic.connect();  boolean success = mclassic.authenticatesectorwithkeya(1, mifareclassic.key_default ); final bytearraybuffer b = new bytearraybuffer(mmaxsize);  if (success) {        b.append(mclassic.readblock(0), 0, 16);     b.append(mclassic.readblock(1), 0, 16);     b.append(mclassic.readblock(2), 0, 16);     b.append(mclassic.readblock(3), 0, 16); }

if want read sector 0, that's ok. if want read different sector (for example sector 1), success has true value, when app go readblock(), ioexception triggered , have returned tranceiver failed.

what doing wrong?

in code example you're authenticating sector 1 try read blocks sector 0. remember sector , block numbers zero-based. may interested in blocktosector(int block).


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