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Search found 219 matches

by mabel
Thu Sep 17, 2015 2:42 am
Forum: Questions & Answers
Topic: Delete card manager applet on the java card ?
Replies: 2
Views: 805

Re: Delete card manager applet on the java card ?

Hey there,

You can not delete the card manager, since the Card Manager is the card component responsible for all card administration and card system service functions. It handles the application management of the card.
by mabel
Thu Sep 17, 2015 1:46 am
Forum: Questions & Answers
Topic: java card program problem: how to make code simpler and more efficient
Replies: 1
Views: 515

java card program problem: how to make code simpler and more efficient

I am writing code for java card encryption. Here is part of the code. switch (buf[ISO7816.OFFSET_P1]){ case (byte) 0x01: switch (buf[ISO7816.OFFSET_P2]){ case (byte) 0x01: doSingleDES(apdu, DESKey1); return; case (byte) 0x02: doSingleDES(apdu, DESKey2); return; case (byte) 0x03: doSingleDES(apdu, DE...
by mabel
Mon Aug 31, 2015 3:18 am
Forum: Questions & Answers
Topic: main() in java card applet
Replies: 1
Views: 477

main() in java card applet

I am studying webcard material(see the attachment). And I saw the main() function in the java card applet.
Why is the main() function in the java card applet ?
I have never saw this in other applets. How strange it is.
by mabel
Mon Aug 31, 2015 2:49 am
Forum: Questions & Answers
Topic: two questions about waitExtension
Replies: 1
Views: 591

two questions about waitExtension

I have two questions about waitExtension function.
Q1: If the card doesn't implement automatic timer mechanism, how long is the waiting time waitExtension function request from CAD?
Q2: If there is a long-playing processing, how should I request ?
Thanks a lot.
by mabel
Thu Aug 27, 2015 5:48 am
Forum: Questions & Answers
Topic: Unable to load Shareable Interface Package into the java card --Error: 6A80
Replies: 1
Views: 588

Unable to load Shareable Interface Package into the java card --Error: 6A80

Recently,when I loaded the packages associated with the shareable interface, I got the error code "6A 80",which meant Wrong Data. But I don't know the reason.
The attachment is my project.

Can anyone help me solve this issue ?
by mabel
Wed Aug 19, 2015 1:44 am
Forum: Questions & Answers
Topic: Middleware
Replies: 6
Views: 1110

Re: Middleware

javacardbr wrote:Hi,

Someone has a middleware development guide?

Regards,

Please update your question and provide us more details.
by mabel
Tue Jun 16, 2015 4:00 am
Forum: Communication
Topic: Javacard KeyAgreement differs from BouncyCastle KeyAgreement
Replies: 1
Views: 870

Javacard KeyAgreement differs from BouncyCastle KeyAgreement

I am confused about KeyAgreement. Both the server side and card side have the same keys-the card public and private keys and the terminals public and private keys. If i generate KeyAgreement for the card and server as private on the server side ,the secters are the same, so the generation is OK and ...
by mabel
Fri May 22, 2015 1:19 am
Forum: Communication
Topic: ISO7816 - Odd INS codes?
Replies: 4
Views: 1241

Re: ISO7816 - Odd INS codes?

Hi,horse dream.Could you please explain what you mean : "Odd instruction codes are typically handled differently from the even ones by the card, they are no simple aliases for these..." As we all know,according to ISO, odd INS codes are invalid . What I want to know is if there is a card, ...
by mabel
Thu May 21, 2015 2:06 am
Forum: Communication
Topic: ISO7816 - Odd INS codes?
Replies: 4
Views: 1241

ISO7816 - Odd INS codes?

I found the following descriptions in ISO 7816. http://www.cardwerk.com/smartcards/smartcard_standard_ISO7816-4_5_basic_organizations.aspx#chap5_4 5.4.2 Instruction byte The instruction byte INS of a command shall be coded to allow transmission with any of the protocols defined in part 3 of ISO/IEC ...

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