CODEWITHSUNDEEP
protocolssmartcardiso
ARM1992
ARM1992

Reputation: 1

ISO 7816-3 for contact card

i want ask about T=0 transmition protocol can send and receive data in one APDU or no?

example: Reader TX= 90 0A 00 00 05 11 22 33 44 55 and card respond with AA BB CC DD EE FF 11 22 33.

thanks for respond

Upvotes: 0

Views: 258

Answers (1)

guidot
guidot

Reputation: 5333

No, see ISO 7816 part 3. In T=0 the card always responds with 61 xx (if response data exist, of course) and you have to issue a follow-up GET RESPONSE with P3=xx.

In T=1 the response would be sent immediately, but you have to append an LE specification to the command, e.g. LE=0 for up to 255 bytes.

Upvotes: 2

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