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我正在使用javax.smartcardio包为带有 Java 的智能卡编写一个小型应用程序,但我对 ATR 有一些问题(重置答案)。该card.getATR()方法不会重置卡。它返回 ATR 字节,但不将卡返回到 MF 状态。

那是我的例子:

TerminalFactory factory = TerminalFactory.getDefault();
List<CardTerminal> terminals = factory.terminals().list();

// get the first terminal
CardTerminal terminal = terminals.get(0);
// establish a connection with the card
Card card = terminal.connect("T=0");

ATR atr = card.getATR(); //atr.getBytes() <- correct

CardChannel channel = card.getBasicChannel();

ResponseAPDU r;
// STEP 1. select file in MF
r = channel.transmit(new CommandAPDU(new byte[]{0,(byte)0xA4,(byte)0x02,(byte)0x0C,(byte)0x02,0,(byte)0x02,0}));
// r.getBytes() == 90 00 <- correct

// STEP 2. select DF
r = channel.transmit(new CommandAPDU(new byte[]{0,(byte)0xA4,(byte)0x04,(byte)0x0C,(byte)0x02,(byte)0x05,0}));
// r.getBytes() == 90 00 <- correct

atr = card.getATR(); // answer to reset

// STEP 3. select file in MF, as in STEP 1
r = channel.transmit(new CommandAPDU(new byte[]{0,(byte)0xA4,(byte)0x02,(byte)0x0C,(byte)0x02,0,(byte)0x02,0}));
// r.getBytes() == 6A 82 <- fail, not found

card.disconnect(false);

我的错误在哪里?或者我怎样才能重置卡?

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1 回答 1

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Card.getATR()没有指定它重置卡。它只是返回从卡请求的 ATR。您可能应该disconnect(true)改用,然后重新连接到卡。

于 2013-07-03T17:47:20.290 回答