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Rasiand

I have tried but it return with 6E00( Class not supported). I guess SELECT command is sent in plain outside the secure channel.

Rasiand

I am using SCP01 with static key 40 41 42..4F to protect the READ BINARY APDU. And the external authentication is successful. But I always got error status word 6982 (Security condition not satisfied). Could anyone figure out the reason? Thank you. >> 80 50 00 00 08 00 00 00 00 00 00 00 00 << 00 00 ...

Rasiand

Hey all,

Can I perform Native java methods in java card?

Thanks&regards,

Rasiand

Rasiand

Hi everyone in here, I am experiencing a strange problem now . When I sent "8060000004" command, the applet performed differently under T0 and T1 protocol. T0 protocol: It threw"6F00" while running into this code line short le = apdu.setOutgoing(); T1 protocol: It can return test...

Rasiand

I can successfully write and read a smaller data from the card using extended length apdu.

Rasiand

Hello!

I can write a large data into the card successfully by sending extended length APDU. But When I try to read the same length data back from the card, it always failed.

Does anyone know the reason?

Rasiand

wousim wrote:It‘s set by the card manufacturer.

There are several methods in the JCSystem class that can do this - getMaxCommitCapacity and getUnusedCommitCapacity.

If I know nothing about the max size of this buffer, Can I just beginTransaction and never invoke commitTransaction ?

Rasiand

As we all know, atomic transaction buffer is used to log changes in order to help JCRE rollback in case of failed command. But I don't know the max size of this buffer. Could I just beginTransaction and never invoke commitTransaction ?

Thanks

Rasiand

This is just my understanding.
RuntimeException is there to specify normal exceptions.
Exception is there to handle bigger scope, with all types of exception.

Rasiand

Could any one clarify the difference between RuntimeException and Exception? In my opinion, every exception must happen at run time, and therefore, I think we only need RuntimeException. There is no need for Exception.

Search found 12 matches

Re: Secure Messaging

Secure Messaging

Native methods on javacard

Different performance under different protocol

Re: Failed to read data from the card

Failed to read data from the card

Re: the max size of atomic transaction buffer

the max size of atomic transaction buffer

Re: RuntimeException v.s. Exception

RuntimeException v.s. Exception

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