openjavacard-ndef
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Tiny Applet Installation Parameters (NDEF TLV)
The documentation has an example here of how to install the tiny app variant using param data:
user@host:~$ java -jar gp.jar \
-applet D2760000850101 \
-params 100BD101075402656E54657374 \
-install build/javacard/javacard-ndef-tiny.cap
(Install tiny variant with static text "Test")
What is the leading byte of the param data here? Is the param itself a TLV?
Type | Length | Value | ... | ... | ... | ... | ... | ... |
---|---|---|---|---|---|---|---|---|
TNF: Type Name Format | Type Length | Payload Length | Type | |||||
0x10 | 0x0B | 0xD1 | 0x01 | 0x07 | 0x54 | 0x02 | 0x65 0x6E | 0x54657374 |
11 bytes | 0b11010001 | 1 byte | 7 bytes | T | en | Test |
When I use this python code to generate an NDEF, I only get the payload:
import ndef
record1 = ndef.TextRecord("Test")
encoder = ndef.message_encoder()
encoder.send(None)
encoder.send(record1)
encoder.send(None)
message = [record1]
print(b''.join((ndef.message_encoder(message))).hex())
>>> d101075402656e54657374
It also mentions in the docs for the tiny applet:
You should not prepend the dataset with a length prefix as in the stored form.
So maybe I've missed some other detail. What's the initial byte 0x10
in the tiny applet param? Thanks for any help in advance!