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.

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by chico0609
Fri Nov 25, 2016 7:23 am
Forum: Questions & Answers
Topic: SCP02
Replies: 3
Views: 8554

Re: SCP02

The Secure Channel provides a secure communication channel between a card and an off-card entity during a Application Session
, GlobalPlatform Card Specification says.

There are three kinds of Secure Channel Protocol(SCP), SCP01, SCP02, SCP03.

And SCP02 is the most common one.
by chico0609
Tue Nov 22, 2016 5:23 am
Forum: Questions & Answers
Topic: How to use GPsample in JCIDE?
Replies: 3
Views: 8850

Re: How to use GPsample in JCIDE?

FYI
If you use GPShell to test this applet, here are two related script files attached to this post. I got these long time ago.
Hope it helps.
by chico0609
Wed Nov 16, 2016 4:48 am
Forum: Shopping FAQ
Topic: JC30M48CR
Replies: 1
Views: 6215

JC30M48CR

Hi. Thank you very much for the good new product. Can you help me confirm if this new card supports the algorithms below? thx

javacard.crypto.Signature ALG_ECDSA_SHA_256
javacard.security.MessageDigest ALG_RIPEMD160
javacard.security.MessageDigest ALG_SHA_256
by chico0609
Fri Nov 04, 2016 3:58 am
Forum: Questions & Answers
Topic: Problem of DER bytes
Replies: 3
Views: 7496

Re: Problem of DER bytes

Clear the high order bits with a AND

Code: Select all

int unsigned_byte = certData[i] & 0xff;
by chico0609
Thu Nov 03, 2016 11:02 pm
Forum: Questions & Answers
Topic: Problem of DER bytes
Replies: 3
Views: 7496

Re: Problem of DER bytes

Your problem is just because bytes are signed. Any byte in the 0x80-0xFF range will be signed extended to int and printed as a negative integer in range -127...-1.
by chico0609
Tue Oct 25, 2016 2:59 am
Forum: Questions & Answers
Topic: can't install Applet successfully
Replies: 3
Views: 7558

Re: can't install Applet successfully

It might be because either JCIDE simulator or your real card doesn't support the algorithm or key size.
by chico0609
Thu Oct 20, 2016 5:48 am
Forum: Questions & Answers
Topic: Algorithm tools
Replies: 2
Views: 5849

Re: Algorithm tools

That is a good news I have heard today. Hope this tools can be published as quickly as possible.
by chico0609
Thu Oct 20, 2016 3:55 am
Forum: Questions & Answers
Topic: java card- ECDSA signature
Replies: 3
Views: 8248

Re: java card- ECDSA signature

Run JCALGTest on your card and you can get all the supported terms from the test result.

viewtopic.php?f=30&t=40
by chico0609
Thu Oct 20, 2016 1:32 am
Forum: Questions & Answers
Topic: Algorithm tools
Replies: 2
Views: 5849

Algorithm tools

Is there any algorithm tools for me to download and use on my local computer? I saw the online tools here, but my work environment doesn't allow to access the network. If this tool can be downloaded, that would be better.
by chico0609
Fri Oct 07, 2016 9:17 am
Forum: Questions & Answers
Topic: installation parameter of WalletDemoApplet
Replies: 2
Views: 5717

Re: installation parameter of WalletDemoApplet

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