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 24 matches

by KevinAli
Tue Mar 22, 2016 4:40 am
Forum: Questions & Answers
Topic: How to install ROM masked applet
Replies: 2
Views: 7898

How to install ROM masked applet

When I have EEPROM applet, I have to load packages, applet and then I have to perform the installation with INSTALL command. But when I get the ROM masked applet, what specific steps should I follow to install the applet?
by KevinAli
Thu Feb 04, 2016 3:08 am
Forum: Algorithm School
Topic: RSA in java card
Replies: 1
Views: 7850

RSA in java card

Does anyone have sample code for RSA encryption / decryption running on java card?
by KevinAli
Wed Dec 30, 2015 1:45 am
Forum: Communication
Topic: Is there a java card parser for BER-TLV ?
Replies: 1
Views: 7821

Is there a java card parser for BER-TLV ?

Please check the subject.
And the length of tags and values ​​are not known. Any pointers?
by KevinAli
Fri Dec 25, 2015 3:12 am
Forum: Questions & Answers
Topic: Get 6A80 when installing applet into card
Replies: 1
Views: 4883

Get 6A80 when installing applet into card

I am developing an applet which has to implement BigNumber datatype. I can install my applet successfully in JCIDE simulator, but when I install it to my real cards, it returns sw=0x6A80. I research for some time and find that if I comment the line import javacardx.framework.math.BigNumber; My apple...
by KevinAli
Mon Dec 21, 2015 3:09 am
Forum: Questions & Answers
Topic: Find a way to open a secure channel
Replies: 1
Views: 4585

Find a way to open a secure channel

I wrote an applet and it always returned "0x6982"(Security condition not satisfied). Here is part of code: byte[] header = {(byte)0x02, (byte)0x01, (byte)0x01}; ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); outputStream.write(header); outputStream.write(Value.SN.getByte...
by KevinAli
Sun Nov 29, 2015 3:30 am
Forum: Card Products
Topic: What's the primary difference between OP_READY and SECURED?
Replies: 1
Views: 5972

What's the primary difference between OP_READY and SECURED?

I saw a topic talking about the card status INITIALIZED and SECURED. I have some doubts about the difference between OP_READY and SECURED. I have already read GP2.1.1, but it's a little hard for me to understand. I really want to know what's the primary difference between the two status. Compared wi...
by KevinAli
Thu Nov 26, 2015 5:07 am
Forum: Questions & Answers
Topic: javacard byte array max length
Replies: 1
Views: 4969

javacard byte array max length

What is the maximum length when defining a byte array in java card?

In my 32k java card, I defined a byte array with length of 9*1024 and it returned 6A 84 error (6A 84 means "Not enough memory space in the file").
But when I define it with length of 8*1024, there is no error.
by KevinAli
Wed Nov 25, 2015 7:22 am
Forum: Algorithm School
Topic: Can I clear the algorithm instance?
Replies: 1
Views: 5500

Can I clear the algorithm instance?

As we all know,when we write an applet, we should create the algorithm instance before calling one encryption algorithm. For example, theCipher = Cipher.getInstance(Cipher.ALG_AES_BLOCK_128_CBC_NOPAD,false) Qs: After using the algorithm to do encryption, can I clear this instance? -If Yes, how can I...
by KevinAli
Mon Nov 23, 2015 6:04 am
Forum: Card Products
Topic: Is there any way to to hide the applet in java card
Replies: 1
Views: 6124

Is there any way to to hide the applet in java card

As we all know, using some tools(such as gpshell, opensc-tool, pyApduTool), we can see the applet list on a java card.

I want to know if there is any way to to hide the applet so that they won't show up in the GET STATUS response. Thanks
by KevinAli
Tue Oct 06, 2015 11:23 am
Forum: Card Products
Topic: Get the size of EEPROM the applet installation use in java card
Replies: 1
Views: 5710

Get the size of EEPROM the applet installation use in java card

How can I know how much EEPROM java card applet installation use? I haven't found any direct method to get the size of an applet yet.
Is it equal with the size of CAP file?
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