Announce two new product: SmartCard Reader Rockey200 and USB2.0 Extension Cable

ROCKEY 200 is a handy and portable USB Smart Card reader that can perform read/write operations on any ISO 7816-1/2/3/4 smart cards which are compatible with protocol T=0 and T=1.

USB2.0 Extension Cable With high speed USB 2.0 devices such as USB token ,USB Card Reader and so on.

Come to try it now!

Search found 219 matches

by mabel
Sun Feb 25, 2018 8:29 pm
Forum: Questions & Answers
Topic: About the card asymmetric authentication
Replies: 1
Views: 134

Re: About the card asymmetric authentication

If your card supports SCP10, the card manager handles this and is implemented by the card vendor. SCP10 is the only asymmetric authentication protocol in GP.
by mabel
Fri Feb 23, 2018 12:48 pm
Forum: Questions & Answers
Topic: How to start my first hello world applet in java card?
Replies: 2
Views: 178

Re: How to start my first hello world applet in java card?

To learn Java Card, first of all you must need to learn Java Card related Specification,such as Java Card Runtime Environment Specification, Java Card Virtual Machine Specification and so on.
by mabel
Fri Nov 03, 2017 5:55 am
Forum: Shopping FAQ
Topic: Difference between JC10M128C and A22CR card
Replies: 2
Views: 393

Re: Difference between JC10M128C and A22CR card

It's more efficient to check the card product introduction page to know more details by yourself, I think.
by mabel
Wed Oct 18, 2017 10:10 pm
Forum: Questions & Answers
Topic: APDU SELECT communication
Replies: 1
Views: 242

Re: APDU SELECT communication

SELECT command itself for a Java Card is described on the application layer in the corresponding specifications. On the low level only the protocol (T=0/1: ISO7816-3, T=CL: ISO14443) is described . The APDU structure is described in ISO7816-4. The commands described are not supported with the except...
by mabel
Fri Oct 13, 2017 5:49 am
Forum: Questions & Answers
Topic: Doubt about JavaCard Memory
Replies: 3
Views: 322

Re: Doubt about JavaCard Memory

The size of your test array is rather small, so considering all the overhead of executing other bytecodes, the difference is probably going to be difficult to notice.
by mabel
Sun Oct 08, 2017 9:18 pm
Forum: Questions & Answers
Topic: Question about APDU
Replies: 1
Views: 192

Re: Question about APDU

A1: Method sendBytes() causes the card to send a number of bytes to terminal from current APDU buffer.
A2: Method getBuffer() returns a reference to a byte array buffer contained command data sent from terminal to the card.

If you use JCIDE to run your applet, you may communicate with the simulator.
by mabel
Wed Sep 27, 2017 12:16 am
Forum: Algorithm School
Topic: An issue with the verification of ECDSA
Replies: 2
Views: 550

Re: An issue with the verification of ECDSA

If convenient, would you show us your whole project in order to let us confirm where is the problem?
by mabel
Tue Sep 26, 2017 11:55 pm
Forum: Questions & Answers
Topic: Sinus and Cosinus calculation in javacard?
Replies: 5
Views: 453

Re: Sinus and Cosinus calculation in javacard?

Just try to use Look-up table method.

Define an array with size 360 bytes, direct look up the table to calculate sinus and cosinus.
by mabel
Mon Sep 18, 2017 4:09 am
Forum: Questions & Answers
Topic: Get info in paypass credit card
Replies: 4
Views: 339

Re: Get info in paypass credit card

Try to use 00 B2 01 14 00 instead.
by mabel
Fri Sep 08, 2017 5:45 am
Forum: Questions & Answers
Topic: Export encrypted private key
Replies: 2
Views: 285

Re: Export encrypted private key

It is probably a CryptoException where can retrieve the reason code.

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