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happy123654

If you want to set the status of APDU command. there are two situations: 1. the status equals to 0x9000, you set nothing because the JVCOS will help the applet to set the status. 2. the status means the exception or the private implication. you can use the ISOException.throwIt(status) to set the sta...

happy123654

There has the new GP specification for the update which can save the customer old data, which need that the JVCOS and the applet support the function decribed in the specification.

happy123654

the input data for 3DES encryption is divided into many blocks and every block has the fixed length: 64bit = 8bytes. If the last block does not match the length, we need to pad this block, which make the block to be 64bit. the padding mode have the followed: public static final byte PAD_ISO9796 publ...

happy123654

If you want to delete the applet which creates the static field for the package, there are two steps: 1) delete the package and applet. If there are other applet which belongs to the same package, the applet will deleted too. If the other applet belongs to other package, the other applet change noth...

happy123654

Base the flash chip infomation, you should consult about the api with the chip developer . The API can implements reading or writting flash data.

happy123654

there will have SHA_1 calculation in the last step of ECDH and the result of SHA_1 is 20 bytes

happy123654

I guess the reason is as followed:
There are static field defined in the package and the static field is created in this applet.
You can delete both the package and the applet. or you can remove the creation of the static field in this applet.

happy123654

Because the function implements SHA_1 calculation in the last step.

happy123654

You can set the parameter via the API :setA; setB; setG; setR; setK;setFieldFP;setFieldF2M.
If you don't set the parameter into the card cos. the cos may use the default parameter.

happy123654

There are the RSA public key from 512(bit length) to 4096(bit length) in new JAVACARD special 3.0.5 public static final short LENGTH_RSA_512 = 512; public static final short LENGTH_RSA_736 = 736; public static final short LENGTH_RSA_768 = 768; public static final short LENGTH_RSA_896 = 896; public s...

Search found 35 matches

Re: how to set status of apdu command

Re: Retain the specific data while update the applet

Re: 3Des encript and decrypt

Re: Remove applet failed? Delete applet failed in java card?

Re: How to manage expand flash on JavaCard

Re: Question about the ECDH

Re: Remove applet failed? Delete applet failed in java card?

Re: Why the byte length of KeyAgreement.generateSecret() is 20

Re: How to set EC parameters of Keypair

Re: RSA algorithem

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