Mifare Classic 1k Gen1A vs Gen2 NXP TagInfo

Support
1

Hello everyone,

I purchased a couple Mifare Magic cards (Gen1A & Gen2) to test out before pulling the trigger on a flexM1. Since Gen1A & Gen2 aren’t standardized, I just wanted to see if @amal or anyone with a flexM1 could please tell me if the TagInfo for my chips match the format of the chips in the flexM1s.

Gen1A

– FULL SCAN ------------------------------

Technologies supported:

ISO/IEC 14443-3 (Type A) compatible

Android technology information:

Tag description:

  • TAG: Tech [android.nfc.tech.NfcA, android.nfc.tech.MifareClassic, android.nfc.tech.NdefFormatable]
  • Maximum transceive length: 253 bytes
  • Default maximum transceive time-out: 618 ms

Detailed protocol information:

ID: 0D:4D:48:B8
ATQA: 0x0400
SAK: 0x08

Memory content:

Sector 0 (0x00)
[00] r-- 0D 4D 48 B8 B0 08 04 00 62 63 64 65 66 67 68 69 |.MH…bcdefghi|
[01] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[02] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[03] wxx FF:FF:FF:FF:FF:FF FF:07:80 69 FF:FF:FF:FF:FF:FF
Factory default key Factory default key (readable)

Sector 1 (0x01)
[04] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[05] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[06] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[07] wxx FF:FF:FF:FF:FF:FF FF:07:80 69 FF:FF:FF:FF:FF:FF
Factory default key Factory default key (readable)
.
.
.
.

Sector 15 (0x0F)
[3C] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[3D] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[3E] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[3F] wxx FF:FF:FF:FF:FF:FF FF:07:80 69 FF:FF:FF:FF:FF:FF
Factory default key Factory default key (readable)

r/R=read, w/W=write, i/I=increment,
d=decr/transfer/restore, x=r+w, X=R+W
data block: r/w/i/d:key A|B, R/W/I:key B only,
I/i implies d, *=value block
trailer (order: key A, AC, key B): r/w:key A,
W:key B, R:key A|B, (r)=readable key
AC: W implies R+r, R implies r

Gen2

– FULL SCAN ------------------------------

Technologies supported:

ISO/IEC 14443-3 (Type A) compatible

Android technology information:

Tag description:

  • TAG: Tech [android.nfc.tech.NfcA, android.nfc.tech.MifareClassic, android.nfc.tech.NdefFormatable]
  • ERROR: Returns NAK values to app!
  • Maximum transceive length: 253 bytes
  • Default maximum transceive time-out: 618 ms

Detailed protocol information:

ID: 11:22:33:44
ATQA: 0x0400
SAK: 0x08
ATS: 0xB2003344000000000000000000000000

  • Max. accepted frame size: 16 bytes (FSCI: 0)
  • Supported receive rates:
    - 106 kbit/s
  • Supported send rates:
    - 106 kbit/s
  • SFGT: 302.0 us
  • FWT: 4.833 ms
  • NAD not supported
  • CID supported
  • Historical bytes: [none]

Memory content:

Sector 0 (0x00)
[00] r-- 11 22 33 44 00 00 00 00 00 00 00 00 00 00 00 00 |."3D…|
[01] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[02] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[03] wxx FF:FF:FF:FF:FF:FF FF:07:80 69 FF:FF:FF:FF:FF:FF
Factory default key Factory default key (readable)

Sector 1 (0x01)
[04] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[05] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[06] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[07] wxx FF:FF:FF:FF:FF:FF FF:07:80 69 FF:FF:FF:FF:FF:FF
Factory default key Factory default key (readable)
.
.
.
.
Sector 15 (0x0F)
[3C] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[3D] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[3E] rwi 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |…|
[3F] wxx FF:FF:FF:FF:FF:FF FF:07:80 69 FF:FF:FF:FF:FF:FF
Factory default key Factory default key (readable)

r/R=read, w/W=write, i/I=increment,
d=decr/transfer/restore, x=r+w, X=R+W
data block: r/w/i/d:key A|B, R/W/I:key B only,
I/i implies d, *=value block
trailer (order: key A, AC, key B): r/w:key A,
W:key B, R:key A|B, (r)=readable key
AC: W implies R+r, R implies r

Thank you!

2

Yep pretty much a match.

3

Thank you sir. Sadly, my building just emailed me last night saying they’re upgrading all of our units with smart home stuff. They’re going to be replacing all of the RFID locks on our units with Yale locks :frowning:

I guess it’s a good thing my Gen1A vs Gen2 testing delayed my purchase. My front door was the only thing I needed a Mifare Classic for, so I guess I’ll save my middle finger for a Flex One when that launches :slight_smile:

4

You are going to give it the middle finger?
:wink:
Flex One - Read - Vivokey Apex Flex

1 Like
5

Nice! No idea how I missed that. Can’t wait to make payments by flipping the bird to payment terminals lol

1 Like