A quick and dirty Jupyter notebook to convert BLEKey data to cards.

BLEKey.ipynb

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      "Number of cards: 4\n",
      "0. 26 bit card: 0x200615afef\n",
      "1. 26 bit card: 0x20042ae799\n",
      "2. 26 bit card: 0x20042ae799\n",
      "3. 26 bit card: 0x200615afef\n"
     ]
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   "source": [
    "# paste the hex string from your BLE client log here \n",
    "cards = \"1aefaf15 0620001a 99e72a04 20001a99 e72a0420 001aefaf 15062000\"\n",
    "\n",
    "# Convert hex string to bytes\n",
    "cards = cards.replace(\" \", \"\")\n",
    "cards = bytearray.fromhex(cards)\n",
    "\n",
    "num_cards = len(cards) // 7\n",
    "\n",
    "print(\"Number of cards: \" + str(num_cards))\n",
    "\n",
    "for i in range(0, num_cards):\n",
    "    start = i * 7\n",
    "    print (\"%d. %d bit card: \" % (i, cards[start]), end=\"\")\n",
    "    card_data = reversed(cards[start + 1:start + 6])\n",
    "    fixed = ''.join('{:02x}'.format(x) for x in card_data)\n",
    "    print (\"0x%s\" % fixed)\n",
    "    fixed = None\n",
    "    card_data = None"
   ]
  }
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