JavaCard OS

Hi,

My applet needs to receive the APDU command with the data field whose length is greater than 255 bytes. For such commands, I should support the extended length or chaining, which is better? And which is much more secure?

Thanks a lot.
Mar

Does your card support both chaining and extended length APDU? I suggest you to use extended length APDUs.

Tarantino wrote:Does your card support both chaining and extended length APDU? I suggest you to use extended length APDUs.

Thank you for your help, Tarantino.

My card supports both chaining and extended length APDU. But I would like to know why you suggest me to use extended length APDU.

Just use extended length APDUs, thus you do not have to use precious RAM for storing intermediate APDU's in a chain.