Our Online Store have the new products: RFID antenna board. Currently it can work with JC10M24R and JCOP4 card chips.
Compared with normal cards, the antenna board module has a smaller size and fixed holes, which is easy to integrate in the IOT(Internet Of Things) project.

Search found 13 matches

by vermont
Fri Mar 18, 2016 11:35 pm
Forum: Questions & Answers
Topic: Get the data field of the response APDU as a string or integer
Replies: 1
Views: 5902

Re: Get the data field of the response APDU as a string or integer

Code: Select all

ResponseAPDU response = channel.transmit(new CommandAPDU(myAPDUArray));
response.getData() // to get data
response.getSW() // to get the status word
by vermont
Fri Mar 18, 2016 11:29 pm
Forum: Questions & Answers
Topic: Help me understand a piece of code well
Replies: 2
Views: 6621

Re: Help me understand a piece of code well

Here is the comments version. // Get the Lc from a standard length APDU. In JC2.2.2 use the Apdu methods for Lc. short lc = (short) (a[ISO7816.OFFSET_LC] & 0xff); // Ask the OS to read the incoming APDU. short read = apdu.setIncomingAndReceive(); // Check how much was read. The OS may not be abl...
by vermont
Wed Jan 06, 2016 3:34 am
Forum: Questions & Answers
Topic: JavaCard BioAPI
Replies: 1
Views: 5600

JavaCard BioAPI

I have some doubts about JavaCard BioAPI. I am told that the VERIFY command in the API doesn't actually carry out any kind of match. If this is true, how do I perform my own biometric matching algorithm into this command?
by vermont
Wed Dec 02, 2015 8:55 am
Forum: Algorithm School
Topic: Generate Random number on card and on terminal?
Replies: 1
Views: 7230

Re: Generate Random number on card and on terminal?

The terminal. Usually the terminal system sends the commands to the card. So if you would run a Java application with javax.smartcardio then you could use the Java Standard Edition SecureRandom class.
by vermont
Mon Nov 30, 2015 5:33 am
Forum: Questions & Answers
Topic: Hope somebody help me to understand the difference between SIMLPLE -TLV and BER-TLV
Replies: 2
Views: 7630

Hope somebody help me to understand the difference between SIMLPLE -TLV and BER-TLV

Could anyone help me to understand the difference between SIMLPLE -TLV and BER-TLV. I tried to Google to find related doc. But it's very hard for me to understand.
by vermont
Mon Sep 21, 2015 4:57 am
Forum: Questions & Answers
Topic: Looking for a simulated environment
Replies: 1
Views: 6067

Looking for a simulated environment

I have just finished an javacard applet. Now I want to run the applet in a simulated environment which can be able to run javacard unit test framework.
Is there a simulated environment which meets my need ?
Thx for your answer in advance.
by vermont
Wed Sep 02, 2015 2:22 am
Forum: Questions & Answers
Topic: problem about applet uninstall
Replies: 1
Views: 6801

problem about applet uninstall

javacard.framework.AppletEvent.uninstall()
The specification said: "Exceptions thrown by this method are caught by the Java Card runtime environment and ignored. "
And the applet will be deleted or not ?
by vermont
Mon Aug 24, 2015 8:34 am
Forum: Algorithm School
Topic: Implement div algorithm in javacard
Replies: 2
Views: 7636

Implement div algorithm in javacard

I am trying to develop an applet about compute operation (mul,div) with big values. But I only complete the mul operation. I don't know how to implement div algorithm . Can anybody help me out ? Another question: The following codes are my mul algorithm implementation. Is there any other ways to imp...
by vermont
Wed Aug 19, 2015 9:17 pm
Forum: Communication
Topic: How to know the rest amount of memory in javacard
Replies: 2
Views: 8341

Re: How to know the rest amount of memory in javacard

1 Ask the card provider; 2 Write an applet, use the api: JCSystem.getAvailableMemory(), this function can used to get size of RAM(COR or COD) and NVM; You can use the function as said in Javacard API specification; Notice: You can get an accurate value if there is only your applet in the card, and ...
by vermont
Wed Aug 19, 2015 8:00 am
Forum: Communication
Topic: How to know the rest amount of memory in javacard
Replies: 2
Views: 8341

How to know the rest amount of memory in javacard

As the subject mentioned, how do I know the rest amount of memory that is available to my applet?
JavaCard OS : Disclaimer