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 12 matches

by Christy16
Wed Aug 15, 2018 9:33 pm
Forum: Algorithm School
Topic: About the random number generation tool
Replies: 4
Views: 25591

About the random number generation tool

I want a random number generation tool.

Can anybody tell me where can I download it? ?

thanks.
by Christy16
Wed Aug 23, 2017 3:23 am
Forum: Questions & Answers
Topic: Create a program with C#
Replies: 1
Views: 5896

Create a program with C#

I would like to create a program that can detect smart card reader, java card's power up or down, send and receive APDU command.
You may say that this program looks like pyapdutool... Yes, but I need to finish it in C# language. Is there a similar open source program?
by Christy16
Sun Jul 23, 2017 11:51 pm
Forum: Questions & Answers
Topic: Generate random number
Replies: 1
Views: 6202

Generate random number

I am trying to generate random number for a get challenge command, but every time I always got the same number, I need a 8 byte unique number generated every time.Here is my code. Can anyone help me out? Thanks a lot. byte[] apduBuffer = apdu.getBuffer(); RandomData random = RandomData.getInstance(R...
by Christy16
Wed May 24, 2017 11:57 pm
Forum: Questions & Answers
Topic: secure channel security question
Replies: 1
Views: 4976

secure channel security question

I want to use a secure channel for chaining data from and to the smart card. And I would like to use the global platform secure channel to realize this. In this case, I have to use the GP mutual auth method to init a secure channel. But if i do so, an attacker of the applet would be able to block th...
by Christy16
Wed Mar 29, 2017 2:35 am
Forum: Questions & Answers
Topic: ISOApplet on JC30M48CR or A22CR
Replies: 4
Views: 8540

Re: ISOApplet on JC30M48CR or A22CR

UNKNwYSHSA wrote:Both can be choosed. There's more NVM space on A22CR.


Thank you for your answer,UNKNwYSHSA. But have you tested the related operation on A22CR card with ISO applet? It would be nice if you can tell me more details.
by Christy16
Tue Mar 28, 2017 6:25 am
Forum: Questions & Answers
Topic: ISOApplet on JC30M48CR or A22CR
Replies: 4
Views: 8540

ISOApplet on JC30M48CR or A22CR

Has anyone tried to run and test ISOApplet on JC30M48CR card or A22CR card? The ISOApplet fits my project well, however I don't know which card to choose. Hope someone can help. Thanks.
by Christy16
Tue Mar 14, 2017 3:33 am
Forum: Algorithm School
Topic: Do hash on PC and send digest to my card for signing
Replies: 8
Views: 31545

Do hash on PC and send digest to my card for signing

My card supports ALG_ECDSA_SHA. As we all know,for java card, hash calculation is time-consuming,let along data transferring time. Thus I want to do hash on pc and then send digest to my card for signing.
But I don't know how to do this. Any help?
by Christy16
Mon Feb 20, 2017 5:29 am
Forum: Questions & Answers
Topic: CLA value
Replies: 2
Views: 6492

Re: CLA value

Thanks for the quick reply.

I have another question. ISO/IES 7816-4 says that 0x20 - 0x3f are reserved for future use. Does that mean I should not use these CLAs? Right ?
by Christy16
Mon Feb 20, 2017 4:12 am
Forum: Questions & Answers
Topic: CLA value
Replies: 2
Views: 6492

CLA value

Can I use 0x80 as my CLA value? ISO/IEC 7816-4 spec states that for this CLA, the command coding and meaning is proprietary. Does that mean it is proprietary to my code? And I don't have any question with using this value, so it indicated that this value is legal, right?
by Christy16
Sat Jan 28, 2017 10:58 am
Forum: Questions & Answers
Topic: Difference between OS in EEPROM and in ROM
Replies: 1
Views: 5093

Difference between OS in EEPROM and in ROM

Hi all in here. What differences are there between having an OS in EEPROM and having an OS in ROM? What about algorithms in EEPROM or ROM?

Could any one tell me the advantage and disadvantage between them? Thanks a lot.
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