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Search found 40 matches

by Thelogan
Tue Feb 26, 2019 10:43 pm
Forum: Questions & Answers
Topic: How to change the AID of an Installed Package or Applet in JavaCard?
Replies: 2
Views: 773

Re: How to change the AID of an Installed Package or Applet in JavaCard?

This is not possible. AID is a unique identifier and it cannot be changed. The only way is a reinstallation.
by Thelogan
Sun Feb 24, 2019 10:04 pm
Forum: Questions & Answers
Topic: eJava Token with type C
Replies: 1
Views: 564

Re: eJava Token with type C

I have asked JavaCardOS Team several months ago and got the reply that they don't have the eJava Token with type C. You can try to email them to confirm again. If any news,please help to keep me updated. Many thanks.
by Thelogan
Thu Oct 19, 2017 6:12 am
Forum: Questions & Answers
Topic: Change ATR value
Replies: 4
Views: 1387

Re: Change ATR value

Hi there, it's easy to use ATR parse tool to know the ATR and historical bytes.
by Thelogan
Fri Sep 29, 2017 5:47 am
Forum: Questions & Answers
Topic: What' wrong with my applet
Replies: 3
Views: 1151

Re: What' wrong with my applet

Thank you for your help. But where should I call requestObjectDeletion() ? And should I try to initialize all variables in constructor? Keep in mind that you should try to avoid memory leaks like that. Create a temp buffer array and allocate memory in the constructor. If you really cannot circumven...
by Thelogan
Fri Sep 29, 2017 3:37 am
Forum: Questions & Answers
Topic: What' wrong with my applet
Replies: 3
Views: 1151

Re: What' wrong with my applet

It's memory problem.
JCOP supports object deletion . Please check JC 2.2.1 API doc, JCSystem.isObjectDeletionSupported() and requestObjectDeletion().
by Thelogan
Mon Sep 11, 2017 6:21 am
Forum: Questions & Answers
Topic: value meaning in UPLOAD command
Replies: 1
Views: 756

Re: value meaning in UPLOAD command

What you see in the second command is the LOAD command, and the first component to be loaded. The upload command includes two consecutive GlobalPlatform APDU commands: INSTALL [for load] and following multiple LOAD commands. It shall be seen as a fixed sequence. The LOAD command contains parts of th...
by Thelogan
Mon Sep 11, 2017 5:41 am
Forum: Questions & Answers
Topic: Use P1P2 in APDU command
Replies: 1
Views: 853

Re: Use P1P2 in APDU command

If you use proprietary ISO command (CLA byte = 0x80), you may choose your own P1 / P2 parameters. In case it is a GlobalPlatform compliant card, take care of therein defined APDU commands as they use also CLA = 0x80.
by Thelogan
Wed Aug 23, 2017 2:16 am
Forum: Shopping FAQ
Topic: JC30M48CR card customization Service
Replies: 4
Views: 1641

Re: JC30M48CR card customization Service

Thank you for your kind reply.

I will list my customization requirement and send you soon.
by Thelogan
Mon Aug 21, 2017 11:48 pm
Forum: Shopping FAQ
Topic: JC30M48CR card customization Service
Replies: 4
Views: 1641

JC30M48CR card customization Service

I am interested in JC30M48CR card. I saw the description about Customization on product introduction page " JavaCardOS provides customization services implementing a variety of algorithms or features on multi-platform. Please contact javacardos@gmail.com for more details. " Would you pleas...
by Thelogan
Fri Jun 16, 2017 3:20 am
Forum: Questions & Answers
Topic: How to know the real length of data
Replies: 1
Views: 709

Re: How to know the real length of data

If you want to check the real values, you could combine the Lc value with the value returned from apdu.setIncomingAndReceive(). This will indicate how many bytes will be read into the APDU buffer.
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