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.

GP Veirfy

JavaCard Applet Development Related Questions and Answers.
qjal001
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GP Veirfy

Post by qjal001 » Mon Jun 15, 2020 1:24 am

Hi

I'm trying to install an Applet which I made in SIM card by pyApdutool.
But it is blocked with "Download Cap error: Check Card Cryptogram failed".

It seems that I have to enter the right keys (S-ENC, C-MAC, DEK) for GP Verify.
How can I know those Keys(S-ENC, C-MAC, DEK)?
Is it depend on SIM card manufacture?
Then, only SIM card manufacture know them?

Please let me know about that keys.
Thanks

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