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Search found 11 matches

by ordane
Mon Jul 10, 2017 4:48 am
Forum: Questions & Answers
Topic: What is the maximum size of data we can send to a java card in an APDU command?
Replies: 1
Views: 467

Re: What is the maximum size of data we can send to a java card in an APDU command?

In T=0 protocol it is limited to 256 bytes for data part of the APDU and 5 bytes for its header.
by ordane
Mon Jul 10, 2017 4:33 am
Forum: Questions & Answers
Topic: Directory Tree of Java Card Filesystem
Replies: 4
Views: 1050

Re: Directory Tree of Java Card Filesystem

I guess it includes calls to SELECT FILE using the proper P1 and P2 to implement "select next file", but now I don't have a concrete solution.
by ordane
Wed Jul 13, 2016 2:57 am
Forum: Questions & Answers
Topic: Release the memory in my applet
Replies: 1
Views: 707

Release the memory in my applet

In my project, I need to implement the file structure in the applet. I know that the memory should be released after the file deletion. Now I have several elementary files under the dedicated file. But how can I release the memory in my applet?
by ordane
Tue Feb 23, 2016 3:52 am
Forum: Questions & Answers
Topic: Code sharing between applets
Replies: 1
Views: 521

Code sharing between applets

I am looking for ways on how to share custom libraries between applets. Does anyone know how to write source code in order to include common custom classes in different applets? Thanks for any answer!
Note: I am not looking for interface sharing between applets.
by ordane
Fri Jan 22, 2016 4:20 am
Forum: Questions & Answers
Topic: How to send private key from my client to java card
Replies: 1
Views: 709

How to send private key from my client to java card

I have generated RSA private key from my client and now I wanna to send it to the java card. Could anyone tell me how to send private key from my client to java card?
by ordane
Wed Jan 13, 2016 5:55 am
Forum: Questions & Answers
Topic: How to read citizen information from the card
Replies: 1
Views: 748

How to read citizen information from the card

I have a smart card reader-R502 (dual interface) and Smart National ID Card. When I inserted my ID card into reader, my computer can detect it and install the driver. Now I want to read the Citizen Information stored on the card. But Smart National ID Card issuing authorities don't tell me anything ...
by ordane
Wed Dec 30, 2015 4:18 am
Forum: Questions & Answers
Topic: Why can't PIN_TRY_LIMIT be reset ?
Replies: 1
Views: 625

Why can't PIN_TRY_LIMIT be reset ?

I have developed an applet running on Java card 3.0.4. But I run into a problem: the retry counter of PIN doesn't reset its value. I set the PIN_TRY_LIMIT value to 0x03. Here are my test steps. 1. Select the applet. 2. Verify PIN with wrong data deliberately(twice) 3. Call ResetRetryCounter() method...
by ordane
Mon Dec 28, 2015 4:45 am
Forum: Card Products
Topic: Do readers do any cryptography operation?
Replies: 1
Views: 626

Do readers do any cryptography operation?

Does the smart card reader do the cryptography operation? AFAIK, smart card use a Mutual-Authentication method to authenticates the off-card entity. But where is the cryptography operation done, in the reader or not? In a word, I just want to know whether the reader does any cryptography operation.
by ordane
Wed Dec 23, 2015 5:06 am
Forum: Questions & Answers
Topic: How to read and write value into smart card
Replies: 1
Views: 791

How to read and write value into smart card

I bought IFD R502 smart card reader which came with two A40CR cards. And I am trying to write my own applet and load it into my cards. But I have some questions. As you see below, add method adds 5 units to a declared variable. I would like to save the variable value into the card after making an op...
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