When simulate a ISO15693 tag the pageCount could be zero

[xueliu]

Recently I got a RFID card. Regarding the info below it is produced by EM Microelectronic-Marmin SA Switzerland. It supports three standards: 14a, 15 and Legic Prime.

[usb] pm3 --> hf search
[-] Searching for ISO14443-A tag...
[+]  UID: XX XX XX XX XX XX XX
[+] ATQA: 00 41
[+]  SAK: 20 [1]
[+] MANUFACTURER: EM Microelectronic-Marin SA Switzerland
[+]    JCOP 31/41
[=] -------------------------- ATS --------------------------
[+] ATS: 05 77 77 81 02 [ 91 00 ]
[=]      05...............  TL    length is 5 bytes
[=]         77............  T0    TA1 is present, TB1 is present, TC1 is present, FSCI is 7 (FSC = 128)
[=]            77.........  TA1   different divisors are supported, DR: [2, 4, 8], DS: [2, 4, 8]
[=]               81......  TB1   SFGI = 1 (SFGT = 8192/fc), FWI = 8 (FWT = 1048576/fc)
[=]                  02...  TC1   NAD is NOT supported, CID is supported

[?] Hint: try `hf mf` commands


[+] Valid ISO 14443-A tag found

[|] Searching for LEGIC tag...
[+]  MCD: XX
[+]  MSN: XX XX XX
[+] TYPE: MIM1024 card (1002 bytes)

[+] Valid LEGIC Prime tag found

[|] Searching for ISO15693 tag...
[+] UID.... XX XX XX XX XX XX XX XX
[+] TYPE... EM Microelectronic-Marin SA Switzerland (Skidata)

[+] Valid ISO 15693 tag found

[?] Hint: try `hf legic` commands

[?] Hint: try `hf 15` commands

I got a message "[=] Tag is empty!", when I dump the card using hf 15 dump. The value pageCount in the dump file is 0.
I got an error message "[-] Tag size error: pagesCount=0, bytesPerPage=4" when I tried to load the dump file into the memory.
But I think pagesCount=0 should be accepted since we have an empty ISO 15693 tag.

Using the attached patch I could load the dump into the memory and simulate the empty iso15693 tag properly.

[github-actions]

You are welcome to add an entry to the CHANGELOG.md as well

[iceman1001]

Interesting card with those three technologies. Where did you get that one from?

When it comes to eload an empty dump file I am doubtful. An empty dump file like that is an indication of a failed dump.
The only useful information in the file would be UID.

The preferred way to simulate UID is to use it in the -u parameter. i.e. hf 15 sim -u E011223344556677

[xueliu]

Beside of these three technologies, the card has also an ISO/IEC 7816 compatible chip. Normally the card is used for identity authentication and signing documents. So we call it "PKI card". It comes from a famous German automobile manufacturers.

As you said, "An empty dump file like that is an indication of a failed dump". Are we going to keep this design ? If yes. I will close this ticket. Thanks.

[iceman1001]

If you can confirm you can simulate with UID and get same results as with your empty dump file patch ?

PKI Card.. I want one, where can I get one?