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 notuo
Wed Jun 15, 2016 1:30 am
Forum: Questions & Answers
Topic: confused with the API methods
Replies: 2
Views: 7055

Re: confused with the API methods

receiveBytes(short bOff) method retrieves data from the card OS and populates the APDU buffer.

You don't have to copy data to APDU buffer because the JCRE does the copy for you.
by notuo
Mon May 23, 2016 4:42 am
Forum: Card Products
Topic: key lengths supported by AES
Replies: 3
Views: 8609

Re: key lengths supported by AES

JavaCardOS wrote:Hello! AES algorithms supports the following key length:

LENGTH_AES_128
LENGTH_AES_192
LENGTH_AES_256


Thank you for your kind response! But what about ECC algorithms ? Which key lengths are supported for ECC?
Await for your reply!
by notuo
Wed Apr 27, 2016 4:04 am
Forum: Questions & Answers
Topic: Does extended length APDU affect calculation of C-MAC
Replies: 3
Views: 9739

Re: Does extended length APDU affect calculation of C-MAC

Do you have a reference that specifically addresses extended length APDUs for GP? My concern is related to the coding of Lc and the SCP01 length (L) byte for encrypted data. For SCP01, the length of the data field prior to padding is explicitly encoded in one byte and pre-pended to the data field. L...
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