如何从 Java 的 EMV 智能卡读取 PAN
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How do I read the PAN from an EMV SmartCard from Java
提问by
I need to read account number from Maestro/Mastercard with smart card reader. I am using Java 1.6 and its javax.smartcardio package. I need to send APDU command which will ask EMV application stored on card's chip for PAN number. Problem is, I cannot find regular byte array to construct APDU command which will return needed data anywhere...
我需要使用智能卡读卡器从 Maestro/Mastercard 读取帐号。我正在使用 Java 1.6 及其 javax.smartcardio 包。我需要发送 APDU 命令，该命令将询问存储在卡芯片上的 EMV 应用程序的 PAN 号。问题是，我找不到常规字节数组来构造 APDU 命令，该命令将在任何地方返回所需的数据......
采纳答案by Rasmus Faber
You shouldn't need to wrap the APDU further. The API layer should take care of that.
您不需要进一步包装 APDU。API 层应该负责。
It looks like the 0x6D00 response just means that the application did not support the INS.
看起来 0x6D00 响应只是意味着应用程序不支持 INS。
Just troubleshooting now, but you did start out by selecting the MasterCard application, right?
现在只是进行故障排除，但您确实是从选择 MasterCard 应用程序开始的，对吗？
I.e. something like this:
即这样的事情：
void selectApplication(CardChannel channel) throws CardException {
byte[] masterCardRid = new byte[]{0xA0, 0x00, 0x00, 0x00, 0x04};
CommandAPDU command = new CommandAPDU(0x00, 0xA4, 0x04, 0x00, masterCardRid);
ResponseAPDU response = channel.transmit(command);
return response.getData();
}
回答by Rasmus Faber
You need to do construct a CommandAPDU object and pass it to the transmit()-command.
您需要构造一个 CommandAPDU 对象并将其传递给传输（）命令。
You should be able to find the precise command in the documentation for your smartcard, but here is one example:
您应该能够在智能卡的文档中找到精确的命令，但这里有一个示例：
byte[] readFile(CardChannel channel) throws CardException {
CommandAPDU command = new CommandAPDU(0xB0, 0x60, 0x10, 0x00);
ResponseAPDU response = channel.transmit(command);
return response.getData();
}
回答by Rasmus Faber
Did you try looking up in your documentation what 0x6D00 means? It looks like it might mean that the ENVELOPE command is not supported. Have you tried using T=0 protocol instead of T=1?
您是否尝试在文档中查找 0x6D00 的含义？看起来这可能意味着不支持 ENVELOPE 命令。您是否尝试过使用 T=0 协议而不是 T=1？
I would not expect my example to work on your card. I don't know which APDUs the Maestro/MasterCard-supports, so I couldn't give you a working example.
我不希望我的例子在你的卡上工作。我不知道 Maestro/MasterCard 支持哪些 APDU，所以我不能给你一个有效的例子。
Try giving the command an explicit expected length like this:
尝试给命令一个明确的预期长度，如下所示：
byte[] readPan(CardChannel channel) throws CardException {
CommandAPDU command = new CommandAPDU(0x00, 0xB2, 0x5a, 0x14, 250);
ResponseAPDU response = channel.transmit(command);
return response.getData();
}
回答by Rasmus Faber
here is some working example:
这是一些工作示例：
CardChannel channel = card.getBasicChannel();
byte[] selectMaestro={(byte)0x00, (byte)0xA4,(byte)0x04,(byte)0x00 ,(byte)0x07 ,(byte)0xA0 ,(byte)0x00 ,(byte)0x00 ,(byte)0x00 ,(byte)0x04 ,(byte)0x30 ,(byte)0x60 ,(byte)0x00};
byte[] getProcessingOptions={(byte)0x80,(byte)0xA8,(byte)0x00,(byte)0x00,(byte)0x02,(byte)0x83,(byte)0x00,(byte)0x00};
byte[] readRecord={(byte)0x00,(byte)0xB2,(byte)0x02,(byte)0x0C,(byte)0x00};
ResponseAPDU r=null;
try {
ATR atr = card.getATR(); //reset kartice
CommandAPDU capdu=new CommandAPDU( selectMaestro );
r=card.getBasicChannel().transmit( capdu );
capdu=new CommandAPDU(getProcessingOptions);
r=card.getBasicChannel().transmit( capdu );
capdu=new CommandAPDU(readRecord);
r=card.getBasicChannel().transmit( capdu );
This works with Maestro card, I can read PAN number, yet now I need to read MasterCard's PAN number. I do not know should I change the read record APDU or select application APDU. Anyone familiar with APDUs?
这适用于 Maestro 卡，我可以读取 PAN 号码，但现在我需要读取 MasterCard 的 PAN 号码。我不知道我应该更改读取记录 APDU 还是选择应用程序 APDU。有人熟悉APDU吗？
回答by Rasmus Faber
atr = open();
prints(atr);
prints("[Step 1] Select 1PAY.SYS.DDF01 to get the PSE directory");
cmd = new ISOSelect(ISOSelect.SELECT_AID, EMV4_1.AID_1PAY_SYS_DDF01);
card_response = execute(cmd);
prints(card_response);
SFI = NumUtil.hex2String((byte)((1 < < 3) | 4));
// try SFI 1 record 1
prints("[Step 2] Send READ RECORD with 0 to find out where the record is");
read = new EMVReadRecord(SFI, "01", "00");
card_response = execute(read);
prints(card_response);
byte_size = NumUtil.hex2String(card_response.getStatusWord().getSw2());
prints("[Step 3] Send READ RECORD with 1C to get the PSE data");
read = new EMVReadRecord(SFI, "01", byte_size);
card_response = execute(read);
prints(card_response);
// the AID is A0000000031010
prints("[Step 4] Now that we know the AID, select the application");
cmd = new ISOSelect(ISOSelect.SELECT_AID, "A0000000031010");
card_response = execute(cmd);
prints(card_response);
prints("[Step 5] Send GET PROCESSING OPTIONS command");
cmd = new EMVGetProcessingOptions();
card_response = execute(cmd);
prints(card_response);
// SFI for the first group of AFL is 0C
prints("[Step 6] Send READ RECORD with 0 to find out where the record is");
read = new EMVReadRecord("0C", "01", "00");
card_response = execute(read);
prints(card_response);
byte_size = NumUtil.hex2String(card_response.getStatusWord().getSw2());
prints("[Step 7] Use READ RECORD with the given number of bytes to retrieve the data");
read = new EMVReadRecord("0C", "01", byte_size);
card_response = execute(read);
prints(card_response);
data = new TLV(card_response.getData());
close();
回答by Rasmus Faber
what about using a scanner, getting a picture of the card, scanning the content of the picture with a good java ocr library ( like http://ocr4j.sourceforge.net/for example ) and search for a (usually) 16 digit sequence XXXX-XXXX-XXXX-XXXX , then you will get the PAN from any EMV card using java.
如何使用扫描仪，获取卡片的图片，使用一个好的 java ocr 库（例如http://ocr4j.sourceforge.net/）扫描图片的内容并搜索（通常）16 位序列XXXX-XXXX-XXXX-XXXX ，然后您将使用 java 从任何 EMV 卡获取 PAN。
