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Search found 28 matches

by bigWhite
Wed Jan 02, 2019 5:25 am
Forum: Questions & Answers
Topic: Development environment configuration
Replies: 4
Views: 482

Re: Development environment configuration

Do you want to develop the applet using eclispe? Maybe you can try to install the JCKit. After the automatic installation is successful, It don't need any environment configuration. I personally like it very much.
by bigWhite
Mon Dec 24, 2018 6:14 am
Forum: Algorithm School
Topic: The difference between SHA, AES and RSA algorithm?
Replies: 3
Views: 602

Re: The difference between SHA, AES and RSA algorithm?

AES is a symmetric block cipher algorithm

RSA is an asymmetric encryption algorithm
by bigWhite
Wed Aug 29, 2018 11:51 pm
Forum: pyGlobalPlatform
Topic: GP Card Manager Failed
Replies: 3
Views: 2398

Re: GP Card Manager Failed

If you fail to download the CAP, the install and select applet will definitely be failed.
Select GP Card Manager failed, it may be that the card's GP key has been modified, not the default 0x40-0x4F
by bigWhite
Thu May 10, 2018 5:07 am
Forum: Shopping FAQ
Topic: How can I get the AID of ISD?
Replies: 5
Views: 822

Re: How can I get the AID of ISD?

newbiecat wrote:What is the define APDU of the select CardManager? Where can I find the description of related documents?


You can refer to the GP GlobalPlatform specification.
GlobalPlatform.png
by bigWhite
Thu May 03, 2018 5:24 am
Forum: Shopping FAQ
Topic: How can I get the AID of ISD?
Replies: 5
Views: 822

Re: How can I get the AID of ISD?

Maybe, you can get it by sending the command of 'select CardManager'.
by bigWhite
Wed Mar 21, 2018 3:00 am
Forum: Algorithm School
Topic: How to generate random data?
Replies: 2
Views: 574

Re: How to generate random data?

RandomData rand = RandomData.getInstance(RandomData.ALG_SECURE_RANDOM); short lenBytes = (short) (KeyBuilder.LENGTH_DES3_3KEY/8); byte[] buffer = JCSystem.makeTransientByteArray(lenBytes, JCSystem.CLEAR_ON_DESELECT); DESKey key = (DESKey) KeyBuilder.buildKey(KeyBuilder.TYPE_DES, KeyBuilder.LENGTH_D...
by bigWhite
Sun Mar 11, 2018 10:05 pm
Forum: Questions & Answers
Topic: ACR122U
Replies: 4
Views: 531

Re: ACR122U

thanks for your answer, but my really question, how to make sure that the card has connected to the reader?, because i have tried another command but the return is error value too. how to make sure that the card has connected to the reader? If you connected failed, you will not able to send APDUs, ...
by bigWhite
Thu Mar 08, 2018 10:08 pm
Forum: Questions & Answers
Topic: ACR122U
Replies: 4
Views: 531

Re: ACR122U

Get the UID of the card need to have relevant permissions,
In addition, there need internal and external authentication before getting the card UID, maybe you can contact the card issuer.
by bigWhite
Sun Feb 18, 2018 7:01 am
Forum: Solutions
Topic: About LoyaltyCard Applet?
Replies: 2
Views: 570

Re: About LoyaltyCard Applet?

Have you download the program of LoyaltyCard.exe, maybe it can help you better understand the applet. You can download it from this topic: viewtopic.php?f=17&t=1027 .

About the usage of LoyaltyCard.exe , you can refer to this link.https://javacardos.com/wiki/loyalty-card
by bigWhite
Mon Jan 08, 2018 4:09 am
Forum: Questions & Answers
Topic: No such command: /my_channel ???
Replies: 2
Views: 722

Re: No such command: /my_channel ???

kuafu wrote:Please input the right command. My version is fine.
6.png

Yeah, /my_channel is no such command, you used is /my-channel. There is a small error in JCIDE.
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