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 8 matches

by Marcat
Mon Feb 26, 2018 5:22 am
Forum: Questions & Answers
Topic: upload CAP file failed?
Replies: 3
Views: 14191

Re: upload CAP file failed?

rainly wrote:What's the Java Card version of the CAP file you build? The Javacard version supported by JCOP10/18 V2.3.1 is JC221 and is a lower JavaCard version. Maybe the JavaCard version of CAP file is too high.

Yes, it was the Javacard version problem, thank you.
by Marcat
Mon Feb 12, 2018 2:37 am
Forum: Questions & Answers
Topic: upload CAP file failed?
Replies: 3
Views: 14191

Re: upload CAP file failed?

The card I used is JCOP10/18 v2.3.
by Marcat
Sun Feb 11, 2018 9:48 pm
Forum: Questions & Answers
Topic: upload CAP file failed?
Replies: 3
Views: 14191

upload CAP file failed?

I download the JCKit_JAVACOS_Beta_2.0.6.2 and successfully installed it to my computer.
Then I build a project using JCIDE tool, but it failed when I download it using Pyapdutool, can anyone help me?
pyApduTool-6A80.png
by Marcat
Wed May 24, 2017 10:16 pm
Forum: Questions & Answers
Topic: Choose which: extended length or chaining?
Replies: 3
Views: 7131

Re: Choose which: extended length or chaining?

Tarantino wrote:Does your card support both chaining and extended length APDU? I suggest you to use extended length APDUs.


Thank you for your help, Tarantino.

My card supports both chaining and extended length APDU. But I would like to know why you suggest me to use extended length APDU.
by Marcat
Tue May 23, 2017 11:13 pm
Forum: Questions & Answers
Topic: Choose which: extended length or chaining?
Replies: 3
Views: 7131

Choose which: extended length or chaining?

Hi,

My applet needs to receive the APDU command with the data field whose length is greater than 255 bytes. For such commands, I should support the extended length or chaining, which is better? And which is much more secure?

Thanks a lot.
Mar
by Marcat
Tue Feb 07, 2017 2:33 am
Forum: Algorithm School
Topic: How to generate DES key without setting it in advance
Replies: 3
Views: 8734

Re: How to generate DES key without setting it in advance

tay00000 wrote:Remember to wipe the buffer once you have called the setKey() or by overwriting data or generating another random to lose the data and prevent accidental leak of key material.


Thank you very much for your kind tip. I will pay attention to it.
by Marcat
Thu Feb 02, 2017 7:19 pm
Forum: Algorithm School
Topic: How to generate DES key without setting it in advance
Replies: 3
Views: 8734

How to generate DES key without setting it in advance

I would like to generate DES Key inside my applet and use it to encrypt and decrypt data. However I don't know how to generate a DESKey if I don't set it by myself. My code is as belows. In this case, I gor error SW_UNINITIALIZED_KEY. Is there any solution to solve this problem. DESKey tdesKey; Ciph...
by Marcat
Wed Jan 11, 2017 10:56 pm
Forum: Questions & Answers
Topic: Send a random number to host
Replies: 2
Views: 6290

Send a random number to host

I want to send a random number to a host. Now my problem is how to create APDU answer. anyone can help? private void sendChallenge(APDU apdu){ byte[] apduBuffer = apdu.getBuffer(); apdu.setOutgoing(); try { SecureRandom prng = SecureRandom.getInstance("SHA1PRNG"); String randomNum = new In...
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