Search found 11 matches

by lightupdark
Wed Mar 16, 2016 11:00 pm
Forum: Algorithm School
Topic: decrypt viaccess tv
Replies: 2
Views: 1230

Re: decrypt viaccess tv

I can not understand your question well. Do you mean you want to know the card type ? And why do you want to extract the file to copy on cards ?
by lightupdark
Wed Mar 02, 2016 5:06 am
Forum: Questions & Answers
Topic: Got 64 00 when I installed the package
Replies: 1
Views: 608

Re: Got 64 00 when I installed the package

Could you tell us more about your question?
e.g. some basic information of your card and your package

The most quickly method is to ask your card provider!
by lightupdark
Wed Mar 02, 2016 4:59 am
Forum: Communication
Topic: how the card reacts to faulty ISO7816 APDUs
Replies: 3
Views: 1537

Re: how the card reacts to faulty ISO7816 APDUs

Also remind that there may be specifications of how to handle different errors depending on what exactly you are working!
by lightupdark
Wed Mar 02, 2016 4:56 am
Forum: Communication
Topic: how the card reacts to faulty ISO7816 APDUs
Replies: 3
Views: 1537

Re: how the card reacts to faulty ISO7816 APDUs

You can refer to ISO7816 specification for more error code usage.

You can also specify your own error codes which are not specified in the standard.
by lightupdark
Wed Mar 02, 2016 1:25 am
Forum: Communication
Topic: Is it feasible to adapt SCP02 for using the AES keys by some methods?
Replies: 2
Views: 1462

Re: Is it feasible to adapt SCP02 for using the AES keys by some methods?

ThePhoenyx wrote:Just use SCP03. That *is* AES.


As @ThePhoenyx said, AES is used in SCP03.
So it's impossible to use AES in SCP02.
by lightupdark
Tue Jan 19, 2016 5:00 am
Forum: Questions & Answers
Topic: How to build Javacard Library
Replies: 1
Views: 576

How to build Javacard Library

I want to develop a library like the java card development kit. I am developing two packages: a. javacard.framework (methods in package a invoke method/class in package b) b. com.sun.java.impl (methods in package b also invoke method/class in package a) I want to make the library for java card. Q: H...
by lightupdark
Wed Dec 09, 2015 3:46 am
Forum: Algorithm School
Topic: Which algrithom do we use to do INITILIZE UPDATE and EXTERNAL AUTHENTICATION?
Replies: 1
Views: 745

Which algrithom do we use to do INITILIZE UPDATE and EXTERNAL AUTHENTICATION?

Which algorithm do we usually use to do INITIALIZE UPDATE and EXTERNAL AUTHENTICATION? Are there any specifications talking about this?
by lightupdark
Wed Dec 02, 2015 8:22 am
Forum: Questions & Answers
Topic: How to handle java card transaction when power loss or removing the card from smartcard reader
Replies: 1
Views: 541

Re: How to handle java card transaction when power loss or removing the card from smartcard reader

Within transactions writes to persistent memory such as EEPROM or flash are handled atomically. That is: as if all the writes to persistent memory are part of one big action. To create an atomic copy you need to use Util.arrayCopy(). There may also be other actions that can take part of atomicity. I...
by lightupdark
Tue Nov 17, 2015 4:32 am
Forum: Card Products
Topic: How does JCOP card support SCP01/02/03 simultaneously?
Replies: 1
Views: 823

How does JCOP card support SCP01/02/03 simultaneously?

I saw a datasheet of JCOP card - J3D081. Datasheet Link: http://www.motechno.com/uploads/media/J ... P2.4.2.pdf
And It shows that this card supports SCP01/02/03 at the same time.

How does the card implement this ?

JCOP_card.png
by lightupdark
Sat Oct 17, 2015 2:52 am
Forum: Card Products
Topic: Question about java card method header
Replies: 1
Views: 684

Question about java card method header

How does the java card virtual machine construct the header for the methods? e.g. method_info[1] // @0043= { // flags : 0 // max_stack : 5 // nargs : 3 // max_locals: 0 /*0045*/ L0: new 0x0003 /*0048*/ dup /*0049*/ aload_0 /*004a*/ sload_1 /*004b*/ sload_2 /*004c*/ invokespecial 0x0004 /*004f*/ pop ...
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