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Search found 29 matches

by bigWhite
Thu Jan 17, 2019 5:34 am
Forum: Questions & Answers
Topic: What is the difference between NFC card and contact-less smart card?
Replies: 1
Views: 76

Re: What is the difference between NFC card and contact-less smart card?

Near-field communication (NFC) is a set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm (1.6 in) of each other NFC is faster than Bluetooth (424 kbps ), and it can ...
by bigWhite
Wed Jan 02, 2019 5:25 am
Forum: Questions & Answers
Topic: Development environment configuration
Replies: 4
Views: 486

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: 628

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: 2451

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: 828

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: 828

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: 579

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: 539

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: 539

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: 571

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
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