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Aesir

Is there any way form javax.smartcardio to show the APDUs sent/received between another PC-based tool and the card? Thanks.

Aesir

Another thing to point out is to review through your JavaCard applet again to look for areas to optimize with as little compromise to security as possible. Most applet codes are very bulky due to lack of optimization and recently, I have been working on a commercial applet which seems to not fit in...

Aesir

If that is the case, it seems that there are little java card with USB reader form in the market. But here is a method. You can have a try. In fact, Debug.cap component file in the CAP file will not be downloaded into card when downloading the whole CAP file into card. And usually Debug.cap occupie...

Aesir

Thanks for your reply. But we want the java card with USB reader form,just like ejava token.

Aesir

Hi all. We have just finished an applet and the CAP file size is approximately 120K. Now we are trying to choose the appropriate java card candidate. If fact, we would like to use java card with USB form, like ejava token. But it's NVM 110k is smaller than 120K. So would anyone recommend other appro...

Aesir

rena2019 wrote:what command did you sent to ISD?

=>80 F0 80 0F 07 A0 00 00 01 51 00 00

Aesir

I know that each transition from state to state is irreversible except from CARD_ LOCKED to SECURED, only to the ISD. That is, the Card Life Cycle state transition from SECURED to CARD_LOCKED is reversible. I tried to LOCK the ISD with the following APDU: >> 80 F0 80 7F 07 A0 00 00 01 51 00 00 The c...

Aesir

rena2019 wrote:removing applet is only possible if somebody knows the keys. copying is never possible even if you know the keys

Many thanks, rena2019. If I set PIN code of javacard, will it improve my applet security? Or could you tell me the best way to increase security of my applet? Thanks

Aesir

I have a question about the security of my applet. If changing GP key on my javacard, then nobody can remove or
copy my applet. Am I right?

Aesir

Does each javacard applet correspond to one JCVM instance? As we all know, each java program have one JVM instance. Is this same with JCVM?

- If not, it can show that there is only one JCVM and one JCRE as well. If that is the case, how does the applets work in one JCVM ?

Search found 12 matches

How to show APDU sent/received

Re: Help to recommend appropriate "token"

Re: Help to recommend appropriate "token"

Re: Help to recommend appropriate "token"

Help to recommend appropriate "token"

Re: unlock the ISD

unlock the ISD

Re: the security of my applet

the security of my applet

JCVM

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