The exclusive promotional activities on JCOP J3H145 card and Feitian R301 Smartcard Reader are in full swing. Please check this page for details.

Search found 55 matches

by lostsiwonlw
Mon Dec 17, 2018 4:00 am
Forum: Questions & Answers
Topic: Find tools that can set GP key
Replies: 2
Views: 357

Re: Find tools that can set GP key

Maybe you can try the open source tool PyResMan https://www.javacardos.com/tools/pyresman
by lostsiwonlw
Thu Sep 06, 2018 1:27 am
Forum: Questions & Answers
Topic: Getting other samples by Paying Freight only
Replies: 2
Views: 554

Getting other samples by Paying Freight only

Thanks for the great activity- Getting Free Samples by Paying Freight only. I have got the A40CR and JC30M48CR cards. The cards work fine so far.

Will you hold the same activity with other products, such as ejava token or A22CR card? I am looking forward to these. :D
by lostsiwonlw
Tue Nov 07, 2017 10:29 pm
Forum: Questions & Answers
Topic: Can someone give me a walk thru on how to change the ATR Please.
Replies: 1
Views: 550

Re: Can someone give me a walk thru on how to change the ATR Please.

Hey guy,

If you have already got the script, just run the script or send the command one by one.

Maybe, you can describe your problem more detailed, then I can give you some clues.
by lostsiwonlw
Tue Oct 24, 2017 11:03 pm
Forum: Shopping FAQ
Topic: flaws in Infineon RSA key generation
Replies: 1
Views: 704

flaws in Infineon RSA key generation

Recently, researchers have found flaws in Infineon RSA key generation. I have bought some JC30M48CR cards. Is this card based on Infineon chip? I want to be sure that it’s not using the troubled Infineon RSA key generation code?. Any information is helpful for me. Thanks.
by lostsiwonlw
Fri Oct 20, 2017 6:04 am
Forum: Questions & Answers
Topic: How to get IC serial number from java card
Replies: 2
Views: 1082

Re: How to get IC serial number from java card

Select the card manager and then send the below APDU to the card

init update
CLA INS P1 P2 Lc Data Le
>> 80 50 00 00 08 2021222324252627 00

Then bytes responseAPDU[4] - responseAPDU[7] are the serial number.
by lostsiwonlw
Thu Sep 28, 2017 11:18 pm
Forum: Algorithm School
Topic: An issue with the verification of ECDSA
Replies: 2
Views: 1164

Re: An issue with the verification of ECDSA

Just cut your applet to a small applet which only includes ECC function. Of course, make sure that this small applet can run w/o any problem.
by lostsiwonlw
Mon Sep 18, 2017 6:29 am
Forum: Questions & Answers
Topic: Get info in paypass credit card
Replies: 4
Views: 843

Re: Get info in paypass credit card

The Paypass application has blocked the contact interface. So please use a contactless reader to read it.
by lostsiwonlw
Fri Sep 01, 2017 2:09 am
Forum: Questions & Answers
Topic: Javacard RMI application that uses Smartcardio
Replies: 2
Views: 680

Re: Javacard RMI application that uses Smartcardio

Why do you need this? Would you tell me your context?
by lostsiwonlw
Mon Aug 21, 2017 11:34 pm
Forum: Questions & Answers
Topic: change Java Card Kit version in Eclipse IDE
Replies: 3
Views: 940

Re: change Java Card Kit version in Eclipse IDE

I have also been trying to change Java Card Kit version in Eclipse IDE due to the applet compiling request, but failed.

Now there is a workaround but not intelligent. I will new a project and reselect the the java card version and then compile.

Eclipse_JCOP.png
by lostsiwonlw
Thu Aug 17, 2017 5:12 am
Forum: Questions & Answers
Topic: Error 6F00 when generating and verifying a signature
Replies: 2
Views: 799

Re: Error 6F00 when generating and verifying a signature

Try to change the sig_buffer to a bigger balue. RSA Signature alone is 128 Bytes.
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